Omron EJ1 User Manual page 195

Determining the Error from the Current Situation for Communications Errors
The EJ1 does not appear in
the CX-Integrator's Compo-
Way/F network.
Connection
PC
or
PC
CJ1W-CIF11
RS-422A Converter
Connection port
Computer ---
SCU
EJ1
(EDU)
174
Status
There is no power supply to
the EJ1.
CX-one is not compatible with
the EJ1.
The Serial Communications
Board (SCB)/Unit (SCU) and
the EJ1 communications set-
PLC
tings do not match.
CS/CJ
SCB/SCU
EJ1
(RS-485)
PLC
CS/CJ
SCB/SCU
EJ1
(RS-485)
Connection
port
---
Port A
Possible cause
Supply power from the EDU power
supply terminal.
Use a version of CX-One that is com-
patible with the EJ1 (Ver.1.12 or
later.)
Correct the communications settings
for the Serial Communications Unit.
User/default settings: User settings
Serial communications mode:
Data length:
Stop bits:
Parity:
Baud rate:
Refer to the CX-Integrator Operation
Manual (W445).
Note The Serial Communications
Section 7-4
Countermeasure
Serial Gateway
7 (bit)
2 (bit)
Even (bit)
38.4 (kbps)
Board (SCB)/Unit (SCU) must
be unit version 1.2 or later.
Refer to Unit Versions of CS/
CJ-series Serial Communica-
tions Boards/Units in the Serial
Communications Board/Unit
Operation Manual (W336) for
information on checking unit
versions.