Programless Communications; Connectable Devices - Omron EJ1G User Manual

Programless Communications

5-6

Programless Communications

5-6-1

Connectable Devices

SYSMAC CS/CJ Series
Note
Communications with PLCs from OMRON (SYSMAC CS/CJ Series) and Mit-
subishi Electric (MELSEC-Q/QnAS Series) can be performed without creating
ladder programs.
Using programless communications enables monitoring and changing set-
tings for the EJ1G by simply reading and writing to PLC memory. The EJ1G
automatically performs communications with PLCs so no time-consuming
communications programming is required.
Monitor
Monitoring can be
performed for the
EJ1G and the settings
can be changed by
simply reading and
Settings
writing to memory.
change
No time-consuming
communications
programming required!
Name
Serial Communica- CJ1W-SCU21-V1
tions Unit
CJ1W-SCU41-V1
CS1W-SCU21-V1 (See note.) RS-232C
Serial Communica- CS1W-SCB21-V1 (See note.) RS-232C
tions Board
CS1W-SCB41-V1 (See note.) RS-232C
CPU Unit CS/CJ Series
(1) Use only products manufactured on or after December 20, 1999.
For details, refer to the CS/CJ Series Serial Communications Boards/
Units Operation Manual (Cat. No. W336).
(2) Programless communications may stop if a momentary power interrup-
tion occurs at the CPU Unit when programless communications are being
used for a communications port on the CPU Unit. If they do stop, either
cycle the EJ1G power supply or execute a software reset.
The read monitor value is
written to the PLC memory.
PLC
PV
Manipulated variable
Status
The HFU automatically
performs communications
with the PLC.
SP
Alarm value 1
Alarm value 2
The HFU reads the value
written to the PLC memory.
Model
Section 5-6
EJ1G
HFU
PV
Manipulated variable
Status
SP
Alarm value 1
Alarm value 2
Communications port
Port 1 Port 2
RS-232C RS-232C
RS-422A/485 RS-232C
RS-232C
RS-232C
RS-422A/485
--- RS-232C
93