21
Room automation
This section describes:
• Desigo TRA (Total Room Automation) with PXC3… room automation stations.
• Desigo RX with RXC…, RXB…, and RXL… room controllers.
Desigo TRA
Desigo TRA (Total Room Automation) is used in buildings with multiple disciplines for
room automation (HVAC, lighting, blinds) all combined in one total solution. Desigo TRA
offers solutions with greater functionality and flexibility allowing for energy-optimized plant
operation without loss of comfort (efficiency class A).
The freely programmable PXC3 room automation stations communicate via BACnet/IP
and have integrated interfaces to field buses such as PL-Link or DALI (optional).
Keywords
PXC3 room automation station, QMX3.. room unit, TX-I/O modules, PL-Link, DALI, KNX
S-mode, EnOcean, application functions (AFN), room, room segments, groups, central
functions, BACnet, Plug & Play, ABT.
Desigo RX
Desigo RX is a proven room automation product range featuring comprehensive
communications and application functions for individual rooms. The product range
consists of three series of communicating room controllers (RXC…, RXB… und RXL…)
with operator units and predefined applications for HVAC, lighting, and blinds. Desigo RX
room automation is capable of autonomous operation. Integration of LONWORKS or KNX
network via the system controllers provides for additional functionality.
Keywords
Room controller RXB, room controller RXC, room controller RXL, RXB application, RXC
application, RXL application, RXT10, ETS Professional, network variables, group
address, Binding, Discipline I/O, room, group, system controller LONWORKS, system
controller PX KNX
21–1
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Room automation – Related documentation
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21.1
Related documentation
Ref.
[1]
Reference documents
Desigo system description
Type of document
System description
Doc. No.
CM110660
[2]
Desigo TRA: Room automation station
PXC3
Data sheet
CM1N9203
[3]
Desigo TRA: TX-I/O module system
Assortment overview CM2N8170
[4]
Desigo TRA: Room unit QMX3
Data sheet
CM2N1601
[5]
Desigo TRA: PL-Link IO-Block RXM21.1
Data sheet
CM2N3835
[6]
Desigo TRA: PL-Link IO-Block RXM39.1
Data sheet
CM2N3836
[7]
VAV compact controller KNX / PL-Link
GDB181.1E/KN, GLB181.1E/KN
Data sheet
CE1N3547
[8]
Desigo TRA: Mulitsensor OPTISENS
UP258D
Operating and
GAMMA BMA
mounting instruction UP258D11
[9]
Desigo TRA: Bus coupling unit (BCU)
UP117
Operating and
GAMMA_BMA
mounting instruction _UP117
[10]
Desigo TRA: Pushbutton interface
UP220/D31
Operating and
GAMMA_BMA
mounting instruction _UP220
[11]
RXC room automation
System description
CA110333
[12]
RXB (KNX) room automation
System overview
CM110380
[13]
RXC room automation
System overview
CM110780
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21–3
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Contents
21.1
Related documentation ...........................................................................21–2
21.2
21.2.1
21.2.2
21.2.3
21.2.4
21.2.5
21.2.6
21.2.7
21.2.7.1
21.2.7.2
21.2.7.3
21.2.7.4
21.2.8
21.2.8.1
21.2.8.2
Desigo TRA (Total Room Automation)....................................................21–6
Technical principles - Definitions.............................................................21–6
TRA product range overview...................................................................21–9
Integration in automation level ..............................................................21–12
Integration in management level ...........................................................21–13
TRA application functions .....................................................................21–14
Rooms and room segments ..................................................................21–15
Central control functions and grouping .................................................21–16
Central control functions .......................................................................21–16
Grouping ...............................................................................................21–17
Group categories...................................................................................21–18
Hierarchical grouping ............................................................................21–18
Engineering workflow for TRA...............................................................21–20
Workflow for project creation.................................................................21–21
Library creation .....................................................................................21–21
21.3
21.3.1
21.3.2
21.3.3
21.3.4
21.3.5
21.3.5.1
21.3.5.2
21.3.5.3
21.3.5.4
21.3.6
21.3.7
21.3.7.1
21.3.7.2
21.3.7.3
21.3.8
21.3.9
Desigo RXC ..........................................................................................21–22
Technical principles, terms....................................................................21–22
Desigo RXC range overview .................................................................21–24
Integration in the management level .....................................................21–25
Integration in the automation level ........................................................21–27
RXC applications...................................................................................21–28
RXC application library..........................................................................21–28
Application groups.................................................................................21–28
Individual applications ...........................................................................21–29
Application configuration .......................................................................21–30
Map LONWORKS in the LONWORKS system controller ............................21–30
Groups in the LONWORKS system controller ..........................................21–31
Room-based groups..............................................................................21–31
Grouping across rooms .........................................................................21–32
Types of groups ....................................................................................21–33
System functions ...................................................................................21–34
Engineering workflow with RXC ............................................................21–34
21.4
21.4.1
21.4.2
21.4.3
21.4.4
21.4.5
21.4.6
21.4.6.1
21.4.6.2
21.4.6.3
21.4.6.4
21.4.7
21.4.8
Desigo RXB...........................................................................................21–35
Integrating room automation into Desigo ..............................................21–35
Technical principles, terms....................................................................21–35
Product range overview: Desigo RXB ...................................................21–37
Integration into the management level ..................................................21–38
Integration into the automation level .....................................................21–38
RXB applications ...................................................................................21–38
RXB application library ..........................................................................21–38
Application groups.................................................................................21–38
Individual applications ...........................................................................21–39
Application configuration .......................................................................21–39
Map RXB in the PX KNX system controller...........................................21–39
RXB engineering workflow ....................................................................21–39
21.5
21.5.1
21.5.2
21.5.3
21.5.4
21.5.5
Desigo RXL ...........................................................................................21–40
Integrating room automation into the Desigo system ............................21–40
Technical principles, terms....................................................................21–40
Product range overview: Desigo RXL ...................................................21–41
Integration into the management level ..................................................21–42
Integration into the automation level .....................................................21–42
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21.5.6
21.5.6.1
21.5.6.2
21.5.6.3
21.5.6.4
21.5.7
21.5.8
RXL applications ................................................................................... 21–42
RXL application library .......................................................................... 21–42
Application groups ................................................................................ 21–43
Individual applications........................................................................... 21–43
Application configuration....................................................................... 21–43
Map RXL in the PX KNX system controller........................................... 21–43
RXL engineering workflow .................................................................... 21–43
Revision history
Version
Date
Changes
Section
V5
30.03.2012
Addition: Desigo TRA (Total Room Automation)
21.2 - 21.2.8.2
Extended hardware overview for:
- RXC39
- RXB39
- RXL39
21.3.2
21.4.3
21.5.3
Formal adaptations such as proper spelling of brand names
Entire section
21–5
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21.2
Desigo TRA (Total Room Automation)
New guidelines to save energy, lower operating costs as well as greater requirements for
comfort and design require more sophisticated interaction of the various technical
installations in buildings. The PXC3 modular room automation stations combine lighting,
shading, and HVAC in one total solution and provide a direct connection to the PX
automation stations via BACnet/IP.
PL-Link allows for integrating field devices such as room operator units, buttons, motion
detectors without engineering. Desigo TRA is the perfect room solution by supporting also
KNX, DALI, and EnOcean devices.
21.2.1
Technical principles - Definitions
TRA overview
PXC3
PXC3 room automation stations:
• PXC3 assume control functions for one or multiple rooms.
• PXC3 communicate with each other or other system components via BACnet/IP.
Scope and functionality of supported BACnet objects are matched to the requirements
of room automation.
• PXC3 provide a 2-port Ethernet interface for cost-effective cabling via line topology.
• PXC3 contain bus supplies for island bus, PL-Link, and DALI. Internal bus supplies can
be extended for island bus and PL-Link as needed.
TX-I/O modules
TX-I/O modules connect field devices directly to the PXC3 room automation station,
supporting flexible and fast installation and commissioning.
PL-Link
PL-Link (PeripheraL Link) connects communicating room and field devices (room
devices, sensors, actors) with the PXC3 room automation station.
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Plug&play allows for connecting selected Siemens field devices to the PL-Link using plug
and play.
PL-Link allows for integrating third-party devices (via ETS4 engineering for KNX S-mode).
PL-Link is not suitable for KNX subsystem integration, as communication is not directly
between field devices but field devices and room automation station.
PL-Link has bus-internal supply allowing for cost-effective installation without requiring
additional wiring. The 2-wire bus allows for connecting up to 64 devices.
A comprehensive library with preconfigured devices supports simple engineering.
PL-Link provides extended functionality and additional diagnostic functions compared to
direct connected field devices.
DALI
DALI (Digital Addressable Lighting Interface) helps control lighting.
Commercially available DALI EBs (electronic ballast) and dimmers can be connected to
the PXC3..A room automation station via DALI. See also DALI homepage:
http://www.dali-ag.org/
Compared to DC 0...10 V control, DALI offers additional functionality by means of
bidirectional data exchange (status query, set state, etc.).
DALI allows for creating any type of topology (except ring) at up to 300 m and 64 devices.
DALI uses a 2-wire bus protected against polarity reversal. No terminating resistances
required.
EnOcean
EnOcean is a radio technology for sensors, actors, and room units that is normally
operated on integrated solar cells without need for maintenance (no battery exchange).
PL-Link, its KNX S-mode gateway, and ETS4 engineering allow for easily integrating
EnOcean radio room units in TRA without requiring maintenance.
Groups
In TRA, numerous system elements and system data are grouped by means of grouping
functions.
• Groups allow structuring and central control of system elements and data.
• Groups support data exchange between central control functions and individual system
elements.
System elements and data can be grouped by either geographical, functional, or
discipline-specific criteria.
Typical reasons for exchanging data within a group:
• Distributing common group data by central function.
• Collecting data from individual group elements.
• Calculating resulting group data via central function.
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Super genies
The Desigo Insight graphics library contains a super genie comprising key data points for
each TRA application.
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21.2.2
TRA product range overview
Modular room
automation station
PXC3…
PXC3 room automation stations assume control functions for one or multiple rooms.
Type
PXC3.E72
PXC3.E72A
PXC3.E75
PXC3.E75A
Ethernet
2 ports
2 ports
2 ports
2 ports
PL-Link
x
x
x
x
Max. number I/Os
72
72
> 72*
> 72*
DALI
x
x
* The max. number of I/Os covers 16 room segments
TX-I/O modules (TXM1) help connect field devices to the PXC3
room automation station. Bus supply and interface modules
(TXS1, TXA1) are available as an accessory.
TX-I/O modules
The following TX-I/O modules can be used with the PXC3 room automation station:
Types
Description
TXM1.8T
Triac module with 8 outputs (AC 24 V) to control thermal and motorized
valve actuators (AC 24 V) for up to four actuators (3-point output) or 8
actuators (permanent contact or pulse width modulation).
TXM1.6RL
Bistable relay module to switch lighting for up to 6 data points.
TXM1.8RB
Relay module to control blinds motors for up to 2 motors (3 end switches)
or 4 motors (2 end switches).
TXM1.16D
Digitales input modules for up to 16 data points.
TXM1.8D
Digital input modules for up to 8 data points.
TXM1.6R
Relay module for up to 6 data points.
TXM1.8U
Universal module for up to 8 data points.
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QMX3.. room unit
(plug&play)
The flush-mounted room unit QMX3.. in rooms featuring individual
room control is used to operate HVAC, lighting, and blinds functions.
The room unit uses PL-Link to communicate with the PXC3 room
automation station. Commissioning is fast and easy on the device
(plug&play).
The device is operated via 4 operating lines with one display and 2 operating buttons
each. The top operating line shows the currently selected menu, the lowest is used to
navigate within the menu. The 2 middle lines are used to display or operate values
(temperature, setpoints, air quality, fan, scenes, etc.).
Green Leaf function
The leaf symbol of the Green Leaf function tells the room user if the room is operated
efficiently.
• Leaf is green
= Energy-optimized operation
• Leaf is red
= Excessive energy consumption
Pressing the leaf symbol returns room control to energy-optimized operation.
Scene selection
Separate lighting and blinds switches are needed to operate lighting and blinds. Existing
scenes comprising HVAC, lighting, and blinds functions can be adapted to user
requirements directly on the room unit.
Button interface for
PL-Link
(plug&play)
5WG12202DB31
Button interface with four digital inputs to
connect lighting and blinds buttons
UP220/31.
Note: Only devices with order number 5WG1xxx-xDBxx support
PL-Link operating and KNX S-mode.
Pushbutton programs
DELTA i-system
DELTA style
Titanium white / aluminum metallic
1-pushbutton pair, UP221/2, UP221/3
with LED
2-pushbutton pairs, UP222/2, UP222/3
with LED
32-pushbutton pairs, UP223/2, UP223/3
with LED, UP223/5 with LED and IR
receiver
Titanium white / aluminum metallic
1-pushbutton pair, UP285/2, UP285/3
with LED
2-pushbutton pairs, UP286/2, UP286/3
with LED
2-pushbutton pairs, UP227/2, UP287/3
with LED, UP287/5 with LED and IR
receiver
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Pushbutton accessories
Notes on pushbutton
programs and wall
transmitter
Bus transceiver
module
UP117/11
IR remote control
S425/72
For UP223/5 and UP287/5
The above devices must be ordered separately for the frame programs with designs
DELTA line, DELTA vita, or DELTA miro. The devices can also be used together with
common frames from other suppliers.
The plug&play functionality of the above devices can be used only together with PXC3
room automation stations via PL-Link.
EnOcean room units
Wire- and battery-less room units. Connectable via
KNX/EnOcean gateway (ETS4 engineering required).
QAX95.1
QAX96.1
QAX95.4
QAX96.4
QAX97.4
QAX98.4
Room unit with temp. sensor (surface
mounted).
Room unit with temperature sensor and
setpoint adjustment (surface mounted).
Room unit with temperature sensor.
Room unit with temperature sensor and
setpoint adjustment.
Room unit with temperature sensor, freely
configurable button, setpoint adjustment, and
switch (2 stage).
Room unit with temperature sensor, freely
configurable button, setpoint adjustment, and
switch (5 stage).
QAX9x.4 are supplied with a DELTA line titanium-white frame.
Other frame variants such as DELTA vita, DELTA miro must
be ordered separately. The devices can also be used together
with common frames from other suppliers.
EnOcean pushbutton
Connectable via KNX/EnOcean gateway (ETS4 engineering
required).
AP 221
AP 222
Wall transmitter EnOcean single
Wall transmitter EnOcean double
Function for the rocker switch: Switch or pushbutton for lighting
(dimming) and blinds (order number: 5WG4…)
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21.2.3
Integration in automation level
In Desigo TRA, the following central functions generally are best implemented on a
PXC00-E.D (or another PXC…-E.D):
• Alarming: Alarm notification occurs via event enrollment object stored on the PXC00E.D.
• Scheduler: Central TRA functions are controlled by scheduler objects stored on the
PXC00-E.D.
ABT (see 21.2.8) offers the following functions to engineer alarms and schedules:
• Event enrollment objects in the PXC00-E.D are generated automatically based on the
project data from the linked PXC3.
• When engineering the PXC00-E.D, the BACnet reference browser supports
engineering and management of BACnet objects in the PXC3.
Project data from all PXC and PXC3 of a project are integrated in XWP project storage.
This allows, e.g., for cross-project checks, network checks, and use of the BOS (branch
office server).
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21.2.4
Integration in management level
Desigo TRA is best integrated in the management level using automation station PXC00E.D.
The PXC00-E.D has two main tasks:
• Exchange TRA data with the primary plant and upload alarms to management station.
• Execute higher functions (alarms, trend, grouping, schedules etc.).
Figure 21–1 Integrating Desigo TRA in the management station
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21.2.5
TRA application functions
The PXC3 room automation station is programmable based on proven application
functions. A comprehensive application functions library for room automation is provided
as part the scope of delivery of Desigo V5. The library contains predefined application
functions for room climate, lighting, shading, and higher room functions. They can be
combined to form individual solutions together with operating and display functions. The
individual application functions can be adapted to customer needs or freely programmed.
Application functions
Room climate
Room functions
Lighting
Shading
Sensor and actor
functions
• Temperature control (heating, cooling) with radiators, chilled
ceilings, fan coils, VAV systems.
• Operating modes (Comfort, PreComfort, Economy,
Protection).
• Start/stop optimization or boost heating.
• Night cooling, downdraft compensation.
• etc.
• Scene control.
• Occupancy evaluation.
• Energy optimization together with HVAC and blinds.
• Green leaf function
• Switching, dimming.
• Constant light control.
• Automatic lighting based on daylight switching.
• Dusk/dawn switching.
• Stairwell lighting.
• Anti-glare protection with automatic solar protection or slat
adjustment.
• Automatic thermal function for day and night.
• Automatic dusk/dawn adjustment.
• Weather protection (rain, wind, frost).
Sensor functions
•
•
•
•
Actor functions
• Actuator
Local operating
/display functions
•
•
•
•
Presence detection
Window monitoring
Dewpoint monitoring
Temperature measurement
Set temperature setpoint
Select room occupancy
Operate fan coil
Green leaf function
• Brightness measurement
• Air quality measurement
• Wind speed measurement
(central)
• Precipitation detection (central)
• Lighting actor
• Blinds actor
• Call up / memorize scene
• Switch/dim lighting
• Set solar protection
Configuration of
application functions
Many application functions are preconfigured and available in the library. Retroactive
configuration during engineering or commissioning is possible. Own configured
application functions and entire rooms can be stored in a project library.
Configuration of field
devices
The application architecture does not depend on the field device interface. Field devices
can be connected directly to the PXC3 room automation station (via TX-I/O modules) or
via bus (PL-Link, KNX, or DALI).
Many field devices are preconfigured and available in the library. Retroactive
configuration during engineering or commissioning is possible. Project-specific field
devices configured accordingly can be saved in a project library.
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21.2.6
Rooms and room segments
Desigo TRA basically offers two methods to structure a building:
• Rooms (with fixed walls)
• Room segments (typically based on movable walls)
One of the two methods or a mixture thereof is possible depending on the building
structure or required flexibility (e.g. during use phase).
Fixed room arrangement
Flexible room arrangement (floor plan based on room segments)
Room segment 1B
Room segment 2B
Room segment 3B
Room segment 4B
Room 010
Room 115
Room 110
Room 114
Technical Building Infrastructure
Push buttons
Room units
Blind
Lighting
Chilled ceiling
Radiator
Room segment 1A
Room segment 2A
Room segment 3A
Room 116
Room segment 4A
Figure 21–2: Rooms and room segments
A room segment is the smallest indivisible element. A room comprises at least one or
several adjacent room segments.
A room segment is defined and created only once. Room segments typically are
combined several times to rooms over the course of a building's lifecycle.
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21.2.7
Central control functions and grouping
21.2.7.1
Central control functions
Central control functions allow for and support central control and coordination of any
elements. Typical central control functions:
• Central occupancy definition.
• Central setpoints.
• Central hot water/chilled water coordination (optimization of primary plants, supply
chain optimization).
• Central lighting control.
• Central blinds control.
Scheduler
Scheduler
1..3
Central
Occupancy Control
Production
1..3
Scheduler
1
Central
Blind Control
Central
Lighting Control
Distribution
T
Hot Water
Producer
Mixing circuit
Central
Setpoint Control
Central Hot Water
Coordination
Different sources serve as input for a central control function:
• Signals from external system.
• Signals from system user.
• Signals from building user.
• Signals from third-party devices.
• Commands from scheduler program.
• Commands from a higher, central control.
The signals and commands are evaluated by the central control function. The central
control function sends the result to the subordinate control functions via group master and
group members.
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21.2.7.2
Grouping
Groups allow central control functions to distribute and collect values.
The grouping concepts comprises two interrelated aspects:
• Group display:
Display of groups as standardized information in the building automation and control
model to organize central control functions.
• Group communications:
Typical reasons for exchanging data within a group:
– Distributing common group data by central function.
– Collecting data from individual group elements.
– Calculating resulting group data via central function.
Grouping functions help structure and centrally control large numbers of different system
elements and data. Grouping can follow either geographical, functional, or disciplinespecific criteria. Group cooperation supports data exchange between central control
functions and individual system elements.
Central function
Group master on
PXC3 in Desigo TRA
Group member on
PXC3 in Desigo TRA
CFC
Data point
Wind sensor
Group
master
Group master to
distribute wind
information
Shading functions in
the different rooms
respond to the wind
alarm.
Figure 21-3 Example for wind alarm
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21.2.7.3
Group categories
Groups are divided into categories to differentiate between different scopes of application
such as:
• Setpoint groups
• Occupancy groups
• Supply groups
• Lighting groups
• Blinds groups
– Wind protection
– Anti-icing protection
– Scheduler
– Window cleaning
21.2.7.4
Hierarchical grouping
Central control functions can be organized hierarchically, e.g. by:
•
•
•
•
•
•
•
•
•
Room
Zone (multiple rooms)
Floor
Section (e.g. for facade cleaning)
Facade
Building
Technology (wind, protection of blinds against rain)
User (system operator, building user)
Emergency criteria (escape routes, fire zones, sections)
Hierarchical grouping allows for selective as well as cross-building central control.
Tenants
Tenant A
Shopping
Floor
Shops
Public Area
Offices
Hallway
Tenant B
Offices
Hallway
Possible application of this hierarchy:
- Lighting control
- Room temperature setpoint
- Shading control
...
Figure 21-4 Example for hierarchical grouping
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Figure 21-5 Example for central lighting control
Key
AF LgtCenOp = Automation function for central lighting control
GrpMbr = Group member
GrpMst = Group master
Lighting = Automation function for lighting control in the room
RR = Toilet (restroom)
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21.2.8
Engineering workflow for TRA
Desigo V5 offers the tools ABT (Automation Building Tool) and SSA (Setup & Service
Assistant) for TRA.
Automation Building
Tool (ABT)
The ABT tool allows for creating TRA solutions in a project from predefined, flexible
application functions and distributing them across the PXC3 room automation stations in
the rooms. ABT supports mass operations in a building e.g. to group objects for central
functions or to parameterize rooms in a building.
Setup & Service
Assistant (SSA)
The SSA tool allows for configuring the PXC3 room automation stations for a BACnet/IP
network, load I/O configurations, and test the wiring. In addition it allows for updating the
firmware.
SSA primarily is intended for wiring tests. To do this, the electrical engineer connects the
laptop (via USB or LAN) to the PXC3 and carries out all work online via a web interface
on the laptop.
The TRA tool components are integrated in XWP from Desigo V5. The data is also
managed on the BOS. Several engineers can work simultaneously on the same TRA
portal (satellites) during commissioning.
Workflow
There are different workflows for the different roles:
• Project creation (design engineer)
• Installation (electrical installer)
• Commissioning (commissioning engineer)
• Library creation (application engineer)
Project creation
The design engineer creates a project primarily by using library elements.
Installation
The electrical installer installs and configures the network and the devices. The installer
also carries out a function test (wiring test).
Commissioning
The commissioning engineer commissions the plant based on the project data.
Library creation
The application engineer creates new CFC charts or application functions for a specific
project or for the country library.
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21.2.8.1
Workflow for project creation
ABT interactively supports project creation by means of a workflow task card. The
required windows are displayed step by step. Completed steps can be marked and
commented on.
Create project
Define project
settings
Create device
for rooms
Multiply rooms
Copy device
to library
Define central
functions
Engineer
building
Export
Working with satellites in the project
Satellite projects in ABT are created for two reasons:
• Satellite projects allow for concurrent work by different project members.
• Satellite projects allow for dividing up projects in partial projects within system limits
(e.g. max. number of rooms per ABT project).
If an ABT project is divided up into satellite projects, both the building structure as well as
distribution of central functions on one or several PXC00 must be considered. The
building topology, grouping within the building, and central functions in the building as well
as library creation must be carried out in the base project.
21.2.8.2
Library creation
This is an expert task to be considered for the following aspects:
• Creating applications as per the application concept.
• Standardization of interfaces for efficient work (e.g. autoconnect).
• Standardization of texts.
• Testing application functions.
• Documenting application functions.
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21.3
Desigo RXC
The Desigo RXC room automation system controls and monitors comfort conditions in
individual rooms. It provides predefined solutions for HVAC, lighting and blinds.
The range consists of a number of room controllers, plus operator units and predefined
applications. The applications are configured and downloaded into the room controllers
with the RXT10 commissioning and service tool or a standard LNS tool.
21.3.1 Technical principles, terms
The Desigo RXC room automation system is based on LONWORKS technology. To
integrate Desigo RXC into the automation level, the RXC data is mapped to BACnet. For
this reason, the terminology used is derived from the "LONWORKS" and BACnet" worlds.
Figure 21–6: RXC room automation
Binding
Refers to the connection of network variables of the same type between different nodes.
When a LONWORKS network is designed, these bindings are created with a LONWORKS
tool (in the case of the RXC system, this tool is the RXT10 commissioning and service
tool or a standard LNS tool).
Network variables connected in this way communicate implicitly. In other words, if a value
changes, the new value is transmitted automatically. Transmit and receive times are also
monitored, making it possible to react to communications errors.
Binding templates
A binding template contains a number of connections between nodes, or connections to
the LONWORKS system controller. A master binding template and a slave binding template
are available for each RXC application. The master binding template contains the main
data points required for integration.
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Discipline I/Os
A function block in the LONWORKS system controller. A Discipline I/O gathers data from
the RXC room controller and makes it available on the BACnet network.
Discipline I/Os are available for HVAC, lighting and blinds.
FLN Floor Level Network
Communications network for room automation.
LONMARK Interoperability
Association
An association founded by the manufacturers of LONWORKS products, to define
independent, interoperability guidelines for LONWORKS systems. The association is
responsible for checking compliance and for the certification of LONMARK products.
LONWORKS nodes
A device which is connected to the LONWORKS bus and communicates with other
LONWORKS nodes.
Network variables NV
Network variables make it possible to exchange data between different LONWORKS
nodes. This type of communication is also referred to as "implicit", because transmission
and receipt are automatic (see "Binding" above).
Network variables may be input or output variables.
Room-based groups
The Discipline I/Os representing the RXC room controllers in a room are combined in the
LONWORKS system controller into a room-based group. The result is a "room view".".
Grouping across rooms
These contain all the control variables common to a given user grouping (e.g. North
façade, Tenant A, West zone etc.) and distributes these control variables to the
associated room or group members.
Standard Network
Variable Type (SNVT)
As its name suggests, this is a standard type of network variable, designed to simplify
communication between LONWORKS nodes. It is only possible to connect network
variables of the same type to each other.
The SNVTs are defined in the "SNVT Master List" provided by LONMARK.
Super genies
A predefined graphic in the Desigo Insight graphics library. For each RXC application
there is a super genie containing the main data points. The information contained in the
super genies is the same as the information in the binding templates in the RXT10 tool.
21–23
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21.3.2 Desigo RXC range overview
Desigo RXC is an innovative product range comprising room controllers, extension
modules, and room units. Data communication is based on LonWorks.
Desigo RXC hardware
The range comprises compact and modular room controllers, easy-to-operate room units
and controllers in room-style housings.
The input and output configurations of the room controllers, and the style of housing are
fully optimized to suit their field of application.
The modular room controllers include basic modules for HVAC control, which can be
combined with extension modules for control of lighting and blinds.
The HVAC functions are operated with standard room units or controllers in a room-style
housing. A configurable flexible room unit is available for combined operation (HVAC,
lighting, blinds).
Figure 21–7 Hardware Desigo RXC
Desigo RXC software
All the room controllers, and the flexible room unit, are loaded with application software
(referred to here simply as the "application") which contains the control program for the
associated room or area.
Siemens Building Automation maintains a comprehensive library of applications covering
a wide range of HVAC and electrical applications [25].
The RXT10 commissioning and service tool or a standard LNS tool is used for the
engineering and commissioning of a network incorporating the Desigo RXC range. This
tool also supports the creation of communications bindings between LONMARKcompatible devices (Desigo RXC or third-party devices).
21–24
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Appl.
Fan coil systems
(examples)
70223
Name
Controller
FNC02
2-pipe system with changeover.
RXC20.1/RXC21.1
FNC03
2-pipe system with changeover and electric re-heater
RXC20.1 / RXC21.1/
FNC04
4-pipe system.
RXC20.1 / RXC21.1
FNC08
4-pipe system with room supply air cascade control.
RXC21.1
FNC10
2-pipe system with changeover and outside air damper
RXC21.1
FNC12
4-pipe system with outside air damper
RXC21.1
RXC22.1
M
T
T
LON
Raum-Controller
Common functions:
• Window contact, occupancy sensor, four operating modes
• Manual fan control with room unit
• Automatic fan control
(RXC20.1 single-speed, RXC21.1 three-speed)
• Options with 2-pipe systems: Heating only, cooling or changeover via bus using
LONWORKS technology
21.3.3 Integration in the management level
There are two solutions for operation at the Desigo Insight level: a generic and an
engineered operator unit.
Generic operation
For operation in Object Viewer, no additional engineering is required in Desigo Insight.
For operation in Object Viewer, no additional engineering is required in Desigo Insight.
Operation may be either via groups and rooms or directly via the Discipline I/Os.
Figure 21-8 Desigo Insight Object Viewer with RX integration
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Engineered operation –
Plant Viewer
A typical requirement in the case of room integration is a graphical representation of the
building, showing the different floors and rooms.
Desigo Insight provides highly efficient support for the generation of graphics and the
integration of RXC.
Principle:
For each RXC application, there is a predefined graphic (super genie) in the Desigo
Insight graphics library, containing the main data points. The information contained in the
super genies is the same as the information in the binding templates in the RXT10 tool.
The super genies are easy to allocate to a specific room:
 select from the graphics library  copy to the relevant location in the floor plan and 
address (with the controller address).
Figure 21-9 Example of an RXC super genie with a floor plan as the background
Figure 21-10 Example of an RXC super genie
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21.3.4 Integration in the automation level
Desigo RXC is integrated into the automation level (PX) by means of the LonWorks
system controller.
This system controller has two main tasks:
• to map the RXC data to BACnet objects, and
• to implement higher-level functions (grouping, time schedules etc.).
On the "BACnet side" of the LonWorks system controller, the RXC room controllers can
be operated and monitored from a client (PXM20 or Desigo Insight). Further, data can be
exchanged with the primary plant.
Figure 21–11: RXC system overview
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21.3.5 RXC applications
Desigo RXC applications are standard applications developed at HQ. They cannot be
modified for a specific project by the user. These applications is loaded to the room
controller using the RXT10 commissioning and servicing tool or using a standard LNS
tool (commissioning).
Applications of the same type are grouped into "application groups". The complete range
of RXC applications is held in a library which is added to continuously.
RXC applications
library
Application group
CLC
CLC01
RAD
CLC02
CLC
CLC03
FNC
Application
CLC03
Chiled ceiling
with electric
radiator
INT
Application configuration
CLC
Electric radiator
On/off or modulating
Temp. setpoint
.........
.........
.....
.....
.....
Figure 21-12 Hierarchical structure of the applications library
21.3.5.1 RXC application library
The RXC applications library contains application groups, each of which contains
applications of the same type (see Section 21.3.5.2).
The RXC applications library has a version number which is defined in the RXC Valid
Version Set. This Valid Version Set also defines the version of each individual RXC
application.
The structure described above can be seen in the documentation and in the
implementation of the RXT10 commissioning and service tool.
21.3.5.2 Application groups
Similar types of application are grouped into "application groups".
These differ from each other in terms of how the functions are implemented. Thus
"Chilled ceiling with radiator" (CLC02) and "Chilled ceiling and electric radiator" (CLC03)
are two different applications within the CLC group. The first of these two applications
uses water for heating, while the second uses electrical energy. The difference between
applications in the other groups follows a similar pattern.
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Currently, the application groups are as follows:
000
RAD
CLC
FNC
VAV
FPB
INT
IRO
Basic application (allows the RXC room controllers to be used as I/O modules)
Radiator applications
Chilled ceiling applications.
Fancoil applications.
Variable air volume applications.
Fan-powered box applications (fan-assisted VAV)
Integrated applications (combined applications including lighting and/or blinds)
Integrated room operation (applications for the QAX50/51 flexible room units)
21.3.5.3 Individual applications
The individual application is designed for typical HVAC systems as commonly used in
practice in individual rooms.
Examples:
FNC10
2-pipe system with changeover and outside air damper
VAV06
Single duct supply and extract air system
with electric re-heater
Applications are modular in structure, and cover a specific combination of functions which
are always implemented in the same way.
So, for example, operating modes and setpoint derivation are identical in all applications
(including those in different application groups). Similarly, fan speed control is identical in
all FNC applications.
Y [%]
100
Heating
0
Cooling
TR
Comfort
PreComfort
Economy
Building protection
Frost protection
Key:
Y = Output signal
TR = Room temperature
Figure 21-13 Example of operating modes
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21.3.5.4 Application configuration
Each application has a defined number of configuration parameters with which the
application can be programmed for a specific project. These parameters consist both of
general values (such as temperature setpoints etc.) and of specific values for the
application concerned (e.g. changeover configuration, electric reheater etc.).
21.3.6 Map LONWORKS in the LONWORKS system controller
RXC data in the LONWORKS system controller is mapped by use of objects which gather
together the main functions of the RXC applications. The LONWORKS system controller
thus operates as a data concentrator (the data points are not mapped individually).
These objects are referred to as Discipline I/Os and are components of the block library.
The following types of Discipline I/Os exist:
• HVAC:
Comprises all the HVAC information
• Light:
Comprises all the information relating to a lighting group
• Sunblind:
Comprises all the information relating to a group of blinds
• Shared
Contains shared data points (e.g. time schedules, occupancy status etc.)
The Discipline I/Os are defined in accordance with the "Maximum" principle, i.e. one
HVAC Discipline I/O contains all the information found in the HVAC part of the RXC
application.
When mapping an application, however, only the specific data points for that particular
application are mapped to BACnet.
FNC04
FNC03
FNC02
Discipline I/O
contains "superset"
of the data
Only application-specific
data is mapped ( )
CLC03
CLC02
CLC01
HVAC Disc.I/Os
Inputs
Outputs
FNC04
FNC04
FNC03
FNC02
Figure 21-14
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21.3.7 Groups in the LONWORKS system controller
The RXC room controller data is grouped in the LonWorks system controller. The
Discipline I/O itself can be viewed as a preliminary form of grouping: it groups the data for
the different sections (HVAC, lighting and blinds) of the RXC applications into the
associated objects (see Section 21.3.6).
With the LONWORKS system controller, a distinction is made between the following
groups:
• Room-based groups (grouping of Discipline I/Os into a room)  Compounds
• Cross-room groupings (groups of rooms)  firmware
21.3.7.1 Room-based groups
Essentially, a room-based group is a structuring element. If more than one RXC room
controller is installed in a room, only the Discipline I/Os of the master controller will be
integrated. In such cases, master and slave are connected at the field level.
A room-based group accommodates all the Discipline I/Os of one physical room. This
leads to a room-based view.
The second function of the room-based group is the mapping of application-specific data
to BACnet – i.e. the selection of those points of the Discipline I/Os which are needed for
the RXC application concerned. Room-based groups are implemented in the form of
"Compounds" and contained in the PXR Compounds library. There is a room-compound
for every RXC application.
System controller LonWorks
Light
Shared
RXC - Controller room automation
Room
RXC1
Shared
RXC2
HVAC
Light
Shared
HVAC
Light
Figure 21-15 Room-based view
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21.3.7.2 Grouping across rooms
A cross-room group contains all the control variables common to a given group of users
(e.g. North façade, Tenant A, West zone etc.), and distributes these control variables to
the associated room or group members.
For this reason, a cross-room group contains two "member lists", one for the referenced
room and one for the referenced group.
Cross-room groups take the form of blocks and are contained in the block library.
Referenced rooms
Referenced rooms are referenced via the Discipline I/O of the room-based groups (see
Section 21.3.7.1.
Only rooms connected to the same LONWORKS system controller can be referenced.
The addressed rooms cannot be modified online.
Referenced groups
A cross-room group can also transmit values to another group. This may be connected to
the same or another LONWORKS system controller.
Up to 5 more groups can be addressed. These references can be modified online.
A group can only distribute information. It is not capable of gathering data.
X1
X2
X3
X1
X2
X3
A2
R101'HVAC
R102'HVAC
RoomMembers:
__
RoomMembers:
R201
R101'HVAC
R102'HVAC
R101
R102
A1
A1
A1
A1
A2
A2
A2
A2
Group objects
System-Controller 2
System-Controller 1
R202
Room objects
Note:
Figure 21-16 Cross-room groups
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21.3.7.3 Types of groups
The following types of group are available:
HVAC functions
• Changeover:
Transmission of the changeover signal (LTHW or CHW in pipe
work).
• Setpoints:
Basic setpoint correction and setpoint adjustments.
• Emergency:
Override of supply/extract air dampers in the event of fire/smoke.
• Outdoor
Distribution of outside air temperature.
temperature
Electrical functions
Time schedules
• Lighting:
Transfer of lighting control and forced control of lighting
• Blind:
Transfer of blind control and forced control of blinds
• Building use:
Transfer of values for the "Building use" time schedule
• Room occupancy:
Transmission of values for the "Room occupancy" time schedule
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21.3.8 System functions
System functions are higher-level functions which are typically applied to groups. They
are thus stored "upstream" of the groups and connected to them as part of the data flow.
System functions are implemented in the form of Compounds and are part of the
compounds library.
System functions
Group objects
Room objects
O&M
(Write)
"Program" = System function
Example:
"Building in use" schedule
for a given floor
Example:
Emergency control for
a given fire sector
Floor
Program
Group A1
Cmd
Override
Members:
Group A2
X1
X2
X3
Emergency
Program
R101
R101'LightA
R102'LightB
......
Occupancy
HVAC
SblndA
LightA
SblndB
LightB
01505de
RXC
LightC
Members:
R101'HVAC
R102'HVAC
......
Group A1
Cmd
Override
Members:
R101'LightA
R102'LightB
......
R102
Group A2
Y1
Members:
O&M
(Write)
Occupancy
R101'HVAC
R102'HVAC
......
HVAC
SblndA
LightA
RXC
LightB
Figure 21-17
The system functions are as follows:
• Summer/winter compensation
This function adjusts the setpoints as a function of the outdoor temperature. So, for
example, the heating setpoint is raised in winter as the outdoor temperature falls.
• Changeover
This function is used when both heating and cooling are required in a room, but only
one water pipe is installed. The changeover information is mapped in the LONWORKS
system controller and transmitted to the RXC room controllers via the groups. These
switch between heating and cooling accordingly.
• Emergency override
This function is used in emergencies (e.g. fire) to force a specific and immediate
reaction from the ventilation system in the individual room.
Possible reactions:
Close damper, generate positive or negative pressure etc.
21.3.9 Engineering workflow with RXC
The workflow is described in the following documents:
- CM111001 Engineering workflows with XWP [32]
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21.4
Desigo RXB
21.4.1 Integrating room automation into Desigo
The Desigo RXB room automation system controls and monitors comfort conditions in
individual rooms. It supplies predefined solutions for HVAC.
The range consists of a number of room controllers, plus operator units and predefined
applications. The applications are configured and downloaded into the room controllers
with the ETS Professional commissioning and service tool.
21.4.2 Technical principles, terms
The Desigo RXB room automation system is based on KNX/EIB technology. To integrate
Desigo RXB into the automation level, the RXB data is mapped to BACnet. For this
reason, the terminology used is derived from the "KNX/EIB" and BACnet" worlds.
Figure 21-18
Group address / binding
Refers to the connection of network variables of the same type between different nodes.
The group addresses / bindings are generated using ETS (EIB tool software) when
designing the KNX/EIB network. The bound network variables communicate when
changing the value and using a heartbeat. Transmit and receive times are also
monitored, making it possible to react to communications errors.
Discipline I/Os
A function block in the PX KNX system controller. A Discipline I/O gathers data from the
RXB room controller and makes it available on the BACnet network. Discipline I/Os are
available for HVAC functions.
Konnex Association
An association founded by the manufacturers of KNX/EIB products, to define
interoperability guidelines for KNX/EIB systems. The association is responsible for
checking compliance and for the certification of KNX/EIB products.
KNX/EIB nodes
A device which is connected to the KNX/EIB bus and communicates with other KNX/EIB
nodes.
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Network variables NV
Network variables make it possible to exchange data between different KNX/EIB nodes.
Network variables may be input or output variables.
Room-based groups
The Discipline I/Os representing the RXB room controllers in a room are combined in the
PX KNX system controller into a room-based group. The result is a "room view".".
Grouping across rooms
These contain all the control variables common to a given user grouping (e.g. North
façade, Tenant A, West zone etc.) and distributes these control variables to the
associated room or group members.
Super genies
A predefined graphic in the Desigo Insight graphics library. For each RXB application
there is a super genie containing the main data points.
System controller: PX
KNX
The hardware for this system controller consists of the PXC00-U automation station with
extension module PXA30-K11 plus the PX KNX firmware downloaded in the engineering
phase. I/O modules cannot be connected. Communication takes place via
BACnet/LonTalk or BACnet/IP (with extension modules PXA30-N…/W…). With the
system controller, it is also possible to integrate the Synco RMU710, RMU720, RMU730
and RMH760 controllers into Desigo. See also Section 23.
PX KNX Tool
The PX KNX tool is used to configure the PX KNX system controller on the KNX side.
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21.4.3 Product range overview: Desigo RXB
Desigo RXB is an innovative range of room controllers and room units. Data
communications are based on KNX/EIB technology.
Desigo RXB hardware
The range comprises compact controllers, easy-to-operate room units and controllers in
room-style housings.
The input and output configurations of the room controllers, and the style of housing are
fully optimized to suit their field of application.
The HVAC functions are operated with standard room units or controllers in a room-style
housing.
Figure 21–19 Hardware Desigo RXB !
Desigo RXB software
Each room controller is loaded with a selection of application software (referred to as the
"application") which contains the control program for the associated room or area within a
room.
The ETS commissioning and service tool is used for the engineering and commissioning
of a network incorporating the Desigo RXB range. This tool also supports the creation of
communications bindings between KNX/EIB-compatible devices (Desigo RXB or thirdparty devices).
21–37
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10523Z18
Fan coil systems
(examples)
M
Name
FNC02
FNC04
2-pipe system with changeover.
4-pipe system.
FNC08
4-pipe system with room supply air cascade control.
FNC20
4-pipe systems with damper control.
FNC03
2-pipe system with changeover and electric reheater.
FNC05
4-pipe system with electric reheater.
Controller
RXB21.1/ FC10
RXB22.1 / FC-12
T
T
KNX / EIB
Appl.
FNC10
2-pipe system with changeover and outside air.
FNC12
4-pipe system with outside air.
FNC18
2-pipe system with changeover and radiator.
RXB21.1 / FC-11
Raum-Controller
Common functions:
•
•
•
•
Window contact, occupancy sensor, four operating modes
Manual fan control with room unit
Automatic fan control (3 speed).
Options with 2-pipe systems: Heating only, cooling or changeover via bus using
KNX/EIB bus.
21.4.4 Integration into the management level
Integration of Desigo RXB on the Desigo Insight level is analogous to Desigo RXC (See
Section 21.3.3).
21.4.5 Integration into the automation level
Desigo RXC is integrated into the automation level (PX) by means of the PX KNX system
controller. This performs the same tasks as the LONWORKS system controller in the case
of Desigo RXC (see Section 21.3.4.
21.4.6 RXB applications
The existing Desigo RXB applications are identical to the RXC applications of the same
name. They cannot, however, be modified for a specific project by the user. These
applications are preprogrammed by groups in the controller and are selected and
parameterized using the ETS Professional commissioning and service tool.
Applications of the same type are grouped into "application groups". The complete range
of RXB applications is contained in the technical manual which is added to continuously.
21.4.6.1 RXB application library
The RXB applications library contains application groups, each of which contains
applications of the same type (see Section 21.4.6.2).
The RXB applications library has a version number which is defined in the RXB Valid
Version Set. This Valid Version Set also defines the version of each individual RXB
application.
21.4.6.2 Application groups
Similar types of application are grouped into "application groups".
These differ from each other in terms of how the functions are implemented. Thus
"Chilled ceiling with radiator" (CLC02) and "Chilled ceiling and electric radiator" (CLC03)
are two different applications within the CLC group. The first of these two applications
uses water for heating, while the second uses electrical energy. The difference between
applications in the other groups follows a similar pattern.
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Currently, the application groups apply for RXB:
CLC*
Chilled ceiling applications.
FNC
Fancoil applications.
VAV*
Variable air volume applications.
* not for Synco
21.4.6.3 Individual applications
The individual application is designed analogous to RXC for typical HVAC systems as
commonly used in practice in individual rooms (see Section 21.3.5.3).
21.4.6.4 Application configuration
Each application has a defined number of configuration parameters with which the
application can be programmed for a specific project. These parameters consist both of
general values (such as temperature setpoints etc.) and of specific values for the
application concerned (e.g. changeover configuration, electric reheater etc.).
Configuration the application occurs per Section 21.4.8.
21.4.7 Map RXB in the PX KNX system controller
The RXB system is mapped to the PX KNX S-mode system controller by means of
objects in the same way as for RXC (see Section 21.3.6).
These objects are referred to as Discipline I/Os and are components of the block library.
The following types are available for RXB:
• HVAC:
Comprises all the HVAC information
• Shared
Contains shared data points (e.g. time schedules, occupancy status etc.)
21.4.8
RXB engineering workflow
The workflow is described in the following documents:
- CM1Y9775 RXB integration – S-mode [29] or
- CM1Y9776 RXB/RXL integration - Individual addressing [34]
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21.5
Desigo RXL
21.5.1 Integrating room automation into
the Desigo system
The Desigo RXL room automation system controls and monitors comfort conditions in
individual rooms. It supplies predefined solutions for HVAC.
The range consists of a number of room controllers, plus operator units and predefined
applications. The applications are configured using the "HandyTool" QAX34.3 or the
ACS.
21.5.2 Technical principles, terms
The Desigo RXL room automation system is based on proprietary technology. To
integrate Desigo RXL into the automation level, the RXL data is mapped to BACnet. For
this reason, the terminology used is derived from the BACnet world.
Figure 21–20 RXL Room automation
Individual addressing
Engineering the field level using the Handytool (QAX34.3) or ACS.
Discipline I/Os
A function block in the PX KNX system controller. A Discipline I/O gathers data from the
RXL room controller and makes it available on the BACnet network. Discipline I/Os are
available for HVAC functions.
Room-based groups
The Discipline I/Os representing the RXL room controllers in a room are combined in the
PX KNX system controller into a room-based group. The result is a "room view".".
Grouping across rooms
These contain all the control variables common to a given user grouping (e.g. North
façade, Tenant A, West zone etc.) and distributes these control variables to the
associated room or group members.
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RXB/RXL addressing tool
Microsoft Excel workbook with macros for defining the addresses and parameters for the
room controllers.
Super genies
A predefined graphic in the Desigo Insight graphics library. For each RXL application
there is a super genie containing the main data points.
System controller: PX
KNX
Desigo RXL also uses the PX KNX system controller for integration into Desigo. The
hardware for this system controller consists of the PXC00-U automation station with
extension module PXA30-K11 plus the PX KNX firmware downloaded in the engineering
phase. I/O modules cannot be connected. Communication takes place via
BACnet/LonTalk or BACnet/IP (with extension modules PXA30-N…/W…). With the
system controller, it is also possible to integrate the Synco RMU710, RMU720, RMU730
and RMH760 controllers into Desigo. See also Section 23.
HandyTool
The QAX34.3 room unit incorporates the "HandyTool" feature which can be used to set
the RXL room controller parameters.
ACS Service
ACS tool for Synco.
21.5.3 Product range overview: Desigo RXL
Desigo RXL is an innovative and inexpensive range of room controllers and room units.
Desigo RXL hardware
The range comprises compact controllers, easy-to-operate room units and controllers in
room-style housings.
The input and output configurations of the room controllers, and the style of housing are
fully optimized to suit their field of application.
The HVAC functions are operated with standard room units or controllers in a room-style
housing.
Figure 21-21 Desigo RXL hardware
Desigo RXL software
Each room controller is loaded with a selection of application software (referred to as the
"application") which contains the control program for the associated room or area within a
room.
The RXL room controllers The RXL room controllers are commissioned with the
QAX34.3 commissioning and service tool or with ACS.
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10523Z18
Fan coil systems
(examples)
M
Name
FNC02
FNC04
2-pipe system with changeover.
4-pipe system.
FNC08
4-pipe system with room supply air cascade control.
FNC20
4-pipe systems with damper control.
FNC03
2-pipe system with changeover and electric reheater.
FNC05
4-pipe system with electric reheater.
Controller
RXB21.1/ FC10
RXB22.1 / FC-12
T
T
KNX / EIB
Appl.
FNC10
2-pipe system with changeover and outside air.
FNC12
4-pipe system with outside air.
FNC18
2-pipe system with changeover and radiator.
RXB21.1 / FC-11
Raum-Controller
Common functions
•
•
•
•
Window contact, occupancy sensor, four operating modes
Manual fan control with room unit
Automatic fan control (3 speed).
Options with 2-pipe systems: Heating only, cooling or changeover via bus using
KNX/EIB bus.
21.5.4 Integration into the management level
Integration of Desigo RXL on the Desigo Insight level is analogous to Desigo RXC (See
Section 21.3.3). ).
21.5.5 Integration into the automation level
Desigo RXL is integrated into the automation level (PX) by means of the PX KNX system
controller. This performs the same tasks as the LONWORKS system controller in the case
of Desigo (see Section 21.3.4).
21.5.6 RXL applications
The existing Desigo RXL applications are identical to the RXC applications of the same
name. They cannot, however, be modified for a specific project by the user. These
applications are preprogrammed by groups in the controller and are selected and
parameterized using the QAX34.3 or ACS commissioning and service tool.
Applications of the same type are grouped into "application groups". The complete range
of RXL applications is contained in the technical manual which is added to continuously.
21.5.6.1 RXL application library
The RXC applications library contains application groups, each of which contains
applications of the same type, see Section 21.3.6.2.
The RXL applications library has a version number which is defined in the RXL Valid
Version Set. This Valid Version Set also defines the version of each individual RXL
application.
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Room automation – Desigo RXL
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21.5.6.2 Application groups
Similar types of application are grouped into "application groups".
These differ from each other in terms of how the functions are implemented. Thus
"Chilled ceiling with radiator" (CLC02) and "Chilled ceiling and electric radiator" (CLC03)
are two different applications within the CLC group. The first of these two applications
uses water for heating, while the second uses electrical energy. The difference between
applications in the other groups follows a similar pattern.
Currently, the following application groups are available for RXL:
CLC
FNC
VAV
Chilled ceiling applications.
Fancoil applications.
Variable air volume applications.
21.5.6.3 Individual applications
The individual application is designed analogous to RXC for typical HVAC systems as
commonly used in practice in individual rooms (See Section 21.1.6.3).
21.5.6.4 Application configuration
Each application has a defined number of configuration parameters with which the
application can be programmed for a specific project. These parameters consist both of
general values (such as temperature setpoints etc.) and of specific values for the
application concerned (e.g. changeover configuration, electric reheater etc.).
The application is configured in the system controller as described in Section 21.3.8.
21.5.7 Map RXL in the PX KNX system controller
The RXL system is mapped to the PX KNX S-mode system controller by means of
objects in the same way as for RXC (see Section 21.3.6).
These objects are referred to as Discipline I/Os and are components of the block
library [15].
The following types are available for RXL:
• HVAC:
Comprises all the HVAC information
• Shared:
Contains shared data points (e.g. time schedules, occupancy status etc.)
21.5.8 RXL engineering workflow
The workflow is described in the following documents:
- CM1Y9776 RXB/RXL integration - Individual addressing [33]
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Building Technologies
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Room automation – Desigo RXL
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Siemens
Building Technologies
From Desigo V5 – Technical principles
Room automation – Desigo RXL
CM110664en21_06
30.03.2012