_EJ1N200_ReadVariable (1/1)
EJ1N
-200
Read Variable Area: _EJ1N200_ReadVariable
Basic
function
Symbol
Reads one element from the specified variable area.
Start trigger
↑
Busy Flag
Unit selection
Serial Port No.
Communications unit No.of the
Temperature Controller.
Variable type
Read address
File name
Applicable
models
Conditions for
usage
Function
description
FB
precautions
_EJ1N200_ReadVariable
(BOOL)
(BOOL)
EN
ENO
(INT)
(BOOL)
UnitSelect
FB_BUSY
(INT)
(BOOL)
FB_OK
PortNo
(INT)
(BOOL)
TCNo
FB_NG
(WORD)
(DINT)
VariableType
Data
(WORD)
(WORD)
Address
FINS_Error
(WORD)
Compoway/F_Error1
(WORD)
Compoway/F_Error2
FB Busy Flag
FB Normal end
FB Error end
Read data
FINS Error Code
Compoway/F Error Code
Compoway/F Response Code
Lib\FBL\omronlib\TemperatureController\EJ1N-TC\Serial\_EJ1N200_ReadVariable10.cxf
Temperature
EJ1N
Controller
CPU Unit
CS1*-CPU**H Unit version 3.0 or higher
CJ1*-CPU**H Unit version 3.0 or higher
CJ1M-CPU** Unit version 3.0 or higher
CP1H
CP1L
Serial
CS1W-SCU21-V1, CJ1W-SCU21-V1, CJ1W-SCU41-V1 Unit Version 1.2 or higher
Communications
CS1W-SCB21-V1 and CS1W-SCB41-V1 Unit Version 1.2 or higher
Units/Boards
CX-Programmer
Version 5.0 or higher
External Connections
•
1:N connection is possible.
Communications Settings
•
The communications settings(Serial Gateway) of the serial port must be the same as those of the
Temperature Controller.
•
The communications settings of the specified serial port can be set to the default the Temperature
Controller settings using the Set Communications Port (_EJ1N600_SetComm) function block, and the
other Temperature Controller settings using the Set Serial Gateway Mode
(_SCx604_SetPortGATEWAY) function block.
CPU Unit Settings
PLC Setup: Shared Settings for Communications Instructions in FBs
•
Communications Instruction Response Timeout Time (default: 2 s)
5 s recommended
•
Number of retries (default: 0)
Shared Resources
•
Communications ports (internal logical ports)
When the start trigger turns ON, one element, a present value or set value, is read from the specified Variable
Type and Read Address.
Refer to the manual for the Controller being used for details on variable types and read addresses. (See
Related manuals.)
Refer to the FINS error code and Compoway/F Error Code and Compoway/F Response code if an error
occurs.
The FINS error code and Compoway/F Error Code and Compoway/F Response code will be output as
#0000 for a normal end.
•
The FB is processed over multiple cycles. The FB_BUSY output variable can be used to check
whether the FB is being processed.
•
FB_OK or FB_NG will be turned ON for one cycle only after processing is completed. Use these
flags to detect the end of FB processing.
Time Chart
Start Trigger
ON
OFF
FB Busy Flag
(FB_BUSY)
ON
OFF
FB Normal End(FB_OK)ON
or FB Error End(FB_NG)OFF
Read Data
EN input
condition
Connect EN to an OR between an upwardly differentiated condition for the start trigger and the FB_BUSY
output from the FB.
_EJ1N200_ReadVariable (2/2)
Restrictions
Input
variables
Output
variables
Application
example
•
Always use an upwardly differentiated condition for EN.
•
This FB requires multiple cycles to process. Always connect an OR including the FB_BUSY output
variable to the EN input variable to ensure that the FB is processed to completion (see Symbol).
•
Do not turn the FB_BUSY output variable ON or OFF outside the FB.
A Controller is connected to serial port 1 on a Serial Communications Board (SCB).
When bit A turns ON, the process value of The communications unit number 2 is read.
S erial port No.:
1
E J1
1
T he pro cess value is rea d
V aria ble ty pe: C 4
A ddres s: 0 100
B it A
↑
B it B
U n it se le ction
#B B B B
S e ria l P ort N o.
&1
C ontro ller unit N o.
&2
V ariab le type
#C4
R ead a ddress
# 0100
B it C
Related
manuals
Related FBs
E J1
2
E J1
3
E J1
4
E J1
5
U nit selec tion: S C B (#B B B B )
SCB
CPU
_E J1N 200 _R ead V a riable
(B O O L)
(B O O L)
EN
ENO
(IN T)
(B O O L)
U nitS elect
F B _B U S Y
(IN T)
(B O O L)
P ortN o
FB_O K
(IN T)
(B O O L)
TCNo
F B _N G
(W O R D )
(D IN T)
V ariableT y pe
D a ta
(W O R D )
(W O R D )
A dd res s
F IN S _E rror
(W O R D )
C om pow ay/F _ Error1
(W O R D )
C om pow ay/F _ Error2
F B B usy F lag
B it B
F B N orm al en d
B it C
F B E rror end
B it D
R ead d ata
D0
F IN S Error Code
C om po w ay/F E rror C ode
C om po w ay/F R esp onse C od e
P roc es sing after read ing va riable
EJ1
EJ1 Modular Temperature Controllers User’s Manual (H142-E1)
6.4 Detailed Description of the Services, Read Variable Area
Appendix Variable Area Map
FINS Error code
CS/CJ Series Communications Commands Reference Manual (W342-E1)
5-1-3 End Codes
Use the following FB to read status.
Read Status: _EJ1N201_ReadStatus
Variable Tables
Input Variables
Name
Data type
EN
Variable
name
EN
Unit selection
Serial Port No.
UnitSelect
PortNo
INT
INT
Default
Range
BOOL
&0
&1
At right.
&1 to &2
Description
1 (ON): FB started.
0 (OFF): FB not started.
Specify the Unit and the serial port.
Only serial port 2 of CP1H/CP1L M-type
CPU unit is possible to use this FB.
Connected to CPU Unit
Unit selection
#FFFF
Serial port No.
Not accessed.
(Serial Port2)
Connected to Serial Communication Board(SCB)
Unit selection
#BBBB
Serial port No.
&1: Serial Port 1
&2: Serial Port 2
Connected
to
Serial
Communication
Unit(SCU)
Unit selection
SCU Unit No. (&0 to &15)
Serial port No.
&1: Serial Port 1
&2: Serial Port 2
Communications unit No.
of the Temperature
Controller.
Variable type
Read address
TCNo
INT
&0
Variable
Type
WORD
#0
Address
WORD
#0
&0 to &63
Specify The communications unit No. of the
Temperature Controller.
Specify the variable type.
Refer to the Related Manuals for details on
variable types.
Specify the address to write.
Refer to the Related Manuals for details on
addresses.
_EJ1N200_ReadVariable (3/3)
Output Variables
Name
ENO
(May be omitted.)
FB Busy Flag
Variable name
ENO
Data type
BOOL
FB_BUSY
BOOL
FB Normal end
FB_OK
BOOL
FB Error end
FB_NG
BOOL
Read data
Data
DINT
FINS error code
FINS_ErrorCode
WORD
Compoway/F
Error code
CompowayF_Erro
rCode1
WORD
Compoway/F
Response code
CompowayF_Erro
rCode2
WORD
Compoway/F Error Code
Code
Contents
#0000
Normal End
#000F
FINS Command Error
#0010
Parity Error
#0011
#0012
#0013
#0016
#0018
Flaming Error
Overrun Error
BCC Error
Sub-address Error
Frame Length Error
Range
Description
1(ON): A FB has operated normally.
0(OFF): A FB has not started. / A FB ended in error.
Turned off automatically after a completion of
processing.
Turned ON only for 1 cycle when processing ends
normally.
Turned ON only for 1 cycle when processing ends in
error.
Outputs the read data.
Refer to the Related Manuals for details on read data.
Outputs the Fins Error Code when a FB_NG flag is
ON. It is #0000 when ended normally. For details of
the codes, refer to the CS/CJ Series Communications
Commands Reference Manual (W342-E1).
Outputs the Compoway/F Error Code when a FB_NG
flag is ON. Mainly the error statuses on physical
communication lines are output as the Compoway/F
Error Code. It is #0000 when ended normally. For
details of the codes, refer to the descriptions below.
Outputs the Compoway/F Response Code when a
FB_NG flag is ON. Mainly the operation error status of
the Temperature Controller is output as the
Compoway/F Response Code. It is #0000 when
ended normally. For details of the codes, refer to the
descriptions below.
Descriptions
The command processing ended normally.
Specifying a FINS command cannot be executed.
The sum of bits whose received data is “1” does not accord with the setting of a
“Communication Parity”.
The stop bit is “0”.
The next data was received when it was full with the already received data.
The received BCC and the calculated BCC are different.
The sub-addresses are out of the range.
The length of the received flame exceeds the specified number of bytes.
Compoway/F Response Code Details
Code
Contents
#0000
Normal End
#1101
Area type Error
#7011
Operation Error
Meaning
The processing ended normally.
The Variable type does not exist.
The FB cannot be executed due to a device error.
Version History
Version
1.0
Contents
Original production
Date
2006.04.
Attention
This document describes the functions of Function Blocks.
The usage restrictions for units or components and its combinations are not described here. We would like you to make sure
of reading the User’s Manual before actually using the products.