Niobrara R&D Corp
Compact PLC
Upgrades
With the CERI
Niobrara R&D Corp

Technology-Driven Growth Company
− Specializing in Data Communication Products
− Complete design/manufacturing facilities

Founded 1987
− Joplin, Missouri USA

Products Distributed Worldwide
− Through Schneider Electric Channels
Compact 984 Upgrades:
CERI

Replace Compact PLC
− Double width module
− Keep the same racks
− Supports up to 3 expansion
racks

Ethernet Distributed I/O
from any Modbus/TCP
Master
−
−
−
−
Quantum I/O Scanner
M340 NOE I/O Scanner
Premium I/O Scanner
Momentum I/O Scanner
CERI (Continued)

Power Supply
−
−
−
−

3.0A power supply
24 VDC input with switch
Power and Overload lights
Removable connector
100BaseT Ethernet
− Web server for configuration and status
− Modbus/TCP I/O control and configuration
− Firmware upgrades

RS-232 Serial Port
− Firmware upgrades
− Configuration and Status
− Optional I/O Control using Modbus RTU

LCD and Keypad
CERI (Continued)

LCD and Keypad
−
−
−
−
Set IP Address
View serial port parameters
View Error messages
Password protected
PLC

The CERI ….
− maintains a set of (4x) data
registers mapped to the
A120 Compact I/O
− scans the rack continually
and updates these registers
− services the TCP messages
at the end of each rack scan
− PLC I/O Scanner
reads+writes this data on
Modbus/TCP Index 0 or 1
CERI
Data
Registers
Read
Write
3001
3002
3003
3004
4001
4002
4003
4004
Inputs
Outputs
CERI Controlled Rack
N
R
&
D
CERI
Rack Mapper

10,000 words of Holding Registers (4x)
– Accessed as Modbus/TCP Index 0 or 1
– Accepts Modbus/TCP function codes 3, 6, 16, and 23

Mapper associates these Holding Registers to
Inputs and Outputs on the rack.
– Group all of the Inputs together (and Outputs) so a single
I/O Scanner entry covers the entire CERI
– Mapper automatically expands multiplexed modules
– Internal CERI configuration and status registers may also be
mapped to the I/O registers
– Each Output word has a default value on watchdog failure
– 4-bit and 8-bit modules are mapped as a single word (LSB)
– Mapper can reverse I/O bit orders and can pack and unpack
both nybbles and bytes for proper bit number alignment
Initial Setup

Set the IP Address
– Factory Default is 10.10.10.10
– Front Panel keypad and LCD
– DHCP/BOOTP

Point a Web Browser at the CERI
– Username is ignored
– Password is “master”
Setting IP Address Using
LCD and Keypad

Using the key pad on
the front panel you can
set the ….
−
–
–
–
IP Address
Subnet Mask
Gateway
Serial baudrate,
databits, parity and
stop bits
Main Page
Main Web Page….
Name Plate
Firmware Revision
Mode of Operation
Menu Links
Configured Devices
(white background)
Unconfigured Devices
(gray background)
Device Configured
incorrectly (orange
background)
Warnings (red)

Configuration Page
– Links on the left hand side
and at the bottom of each
section of the page
– Summary of Comms,
Control and Gerneral
Settings
– Views of the Racks and
Internal Mapping
Communications

IP Settings
–
–
–
–
BootP and DHCP
IP Address
Subnet Mask
Default Gateway
Control Settings

Allowed Master List
– IP Address of each possible
master
– Only one entry at a time
may control the I/O
– Anyone can read but only
entries in this list may
control I/O

Timeout
– Watchdog timeout between
writes from master
– Outputs will revert the
default values at the end of
the watchdog
General Settings

General
– Run Mode
– Missing Card Action
– Name Plate
(Run = Memory Protect)
Rack Configuration

Rack Page
– Each slot has a link
used to add or edit a
module
– All possible racks and
slots are shown, even if
they are not physically
present
– Click on the slot
number to enter the
module configuration
Configuring Individual Modules


Click the list box
Register usage
list shows which
register are being
used
Configuring Individual Modules

Select the correct
module from the
list
Configuring Individual Modules


Select the correct
values for each of
the items for the
ADU 206
When finish click
Done or Update
Configuring Individual Modules


Completed
configuration of
Rack 1 Slot 3 with
an ADU 206 four
channel analog
input module
Click on the
module name to
get module
information
Configuring Individual Modules



Configuration of
Rack 2 Slot 2 with
an DAP 216
24VDC 16 discrete
output module
The outputs of
this card are
mapped to register
4004
The default value
for this card is
0000 hexidecimal
Configuring Individual Modules




Configuration of
Rack 1 Slot 4 with
an BKF 201
Interbus-S, 16
word module
Sixteen input
words mapped to
3011-3026
Sixteen output
words mapped to
4005-4020
The default values
for each output
register is 0000
hexidecimal
Internal Mapper Configuration

Internal Mapper
– Register A are in the
Drop 0/1 data space.
Range of 1 - 10000
– Register B are either
in Drop 0/1 or in the
Drop 255 data space.
Range 1 – 40000
– Source count is the
number of registers
moved
– Mode selects the
movement direction,
A>B, B<A, A>B
reversed and B<A
reversed
– Pack/Unpack Bytes or
nybbles
Update Password

Set Password to
control access to
web configuration
Backup & Restore

Backup and
Restore the
configuration to
your PC
− The backup is
an editable text
file
− Complete
configuration
file can be
created in a text
editor and
Restored to the
CERI
Update Firmware

Update firmware
conveniently and
quickly from the
web page
Clear Mapper & Default Values

Easily clear the
mapper and
default values
without affecting
the configuration
stored in flash
Statistics

Statistics page
shows….
− Modules firmware
revision
− Backplane
information
− Ethernet, Serial and
Master Statistics
Problem Indicators

Problems with the
configuration of
rack are indicated
with red lettering
on the web page
− Statistics is red
indicating a
problem
− LCD backlight will
flash to indicate
problems
Problem Indicators

Clicking on
Statistics shows a
mapper entry
conflict on register
4006
− LCD backlight will
flash to indicate
problems
Problem Indicators

Clicking on
Register Usage
shows a map of
the configured
modules registers.
Register 4006
background color
is now orange
indicating a
problem
− LCD backlight will
flash to indicate
problems
Problem Indicators

Wrong module
selected is indicated
by the orange
background in the
rack at Rack 2 Slot 2
−
LCD backlight will
flash to indicate
problems
Niobrara R & D Corp

Shipping
– 2400 Country Club Drive
– Joplin, MO 64804 USA

Phone
Mailing
P.O. Box 3418
Joplin, MO 64803-3418
FAX
– +1 (417) 624-8918
+1 (417) 624-8920
– 1 (800) 235-6723 (US & Canada only)

www.niobrara.com