Programless Communications; Connectable Devices - Omron EJ1 User Manual

Programless Communications

5-1

Programless Communications

Monitoring can be
performed for the
EJ1 and the settings
can be changed by
simply reading and
writing to memory.
No time-consuming
communications
programming required!
5-1-1

Connectable Devices

SYSMAC CS/CJ Series/
CP1 Series
Note
116
Communications with PLCs from OMRON (SYSMAC CS/CJ Series) and Mit-
subishi Electric (MELSEC-Q/QnA/QnAS/An/AnS/FX3UC Series) can be per-
formed without creating ladder programs.
Using programless communications enables monitoring and changing set-
tings for the EJ1 by simply reading and writing to PLC memory. The EJ1 auto-
matically performs communications with PLCs so no time-consuming
communications programming is required.
The read monitor value is
written to the PLC memory.
PLC
Monitor
PV
Manipulated variable
Status
The HFU automatically
performs communications
Settings
with the PLC.
SP
change
Alarm value 1
Alarm value 2
The HFU reads the value
written to the PLC memory.
Name
Serial Communica- CJ1W-SCU21-V1
tions Unit
CJ1W-SCU31-V1
CJ1W-SCU41-V1
CS1W-SCU21-V1 (See note.) RS-232C
Serial Communica- CS1W-SCB21-V1 (See note.) RS-232C
tions Board
CS1W-SCU31-V1
CS1W-SCB41-V1 (See note.) RS-232C
CPU Unit CS/CJ Series
CP1 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 EJ1 power supply or execute a software reset.
(3) An Option Board (sold separately) is required.
The HFU reads the TC4
monitor value.
HFU
PV
Manipulated variable
Status
SP
Alarm value 1
Alarm value 2
The read setting is written
to the setting for the TC4.
Model Communications port
Port 1
RS-232C
RS-422A/485 RS-422A/485
RS-422A/485 RS-232C
RS-422A/485 RS-422A/485
---
RS-232C or
RS-422A/485
(See note 3.)
Section 5-1
EJ1
TC4/2
PV
Manipulated variable
Status
SP
Alarm value 1
Alarm value 2
Port 2
RS-232C
RS-232C
RS-232C
RS-422A/485
RS-232C
RS-232C or
RS-422A/485
(See note 3.)