Omron EJ1 User Manual page 198

Determining the Error from the Current Situation for Communications Errors
Serial Connection of
NS-series
Programmable
Terminals
The Smart Active Part (SAP)
does not communicate with
the EJ1.
Connection
or
CJ1W-CIF11
RS-422A Converter
Connection port
PT
PLC
SCU
EJ1
(EDU)
No Communications Between the EJ1 and the NS-Series PT Using Serial
Connection
Status
There is no power supply to
the EJ1.
The SAP is not compatible
with the EJ1.
The SAP is not for serial con-
nection.
An E58-CIFQ1 USB-Serial
NS-series
Conversion Cable is con-
nected to port A and the
EST2-2C-MV3 CX-Thermo
Support Software is started.
PLC
CS/CJ
SCB/SCU
(RS-485) EJ1
The Serial Communications
NS-series Board (SCB)/Unit (SCU) and
the EJ1 communications set-
tings do not match.
PLC
CS/CJ
SCB/SCU
EJ
(RS-485)
Connection
port
----
---
---
Port A
Possible cause
Supply power from the EDU power
supply terminal.
Use a SAP for the EJ1.
Use a SAP for serial Programmable
Terminal connection.
The EST2-2C-MV3 CX-Thermo Sup-
port Software and Programmable
Terminals cannot be used at the
same time.
Close the EST2-2C-MV3 CX-Thermo
Support Software if using Program-
mable Terminals.
To temporarily use the EST2-2C-MV3
CX-Thermo Support Software, either
turn OFF the Programmable Terminal
or move the Programmable Terminal
to the System Screen and stop Pro-
grammable Terminal communica-
tions.
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.
177