Omron EJ1 User Manual page 196

Determining the Error from the Current Situation for Communications Errors
Direct Connection of
NS-series
Programmable
Terminals
The Smart Active Part (SAP)
does not communicate with the
EJ1
Connection
CJ1W-CIF11
RS-422A Converter
Connection port
PT
EJ1
(EDU)
No Communications Between the EJ1 and a Directly Connected NS-Series
PT
Status
There is no power supply to
the EJ1.
The Programmable Terminal
connection is incorrect.
The SAP is not compatible
with the EJ1.
NS-series
The SAP is not for direct con-
nection.
The RS-422A switch settings
are incorrect.
(RS-485)
An E58-CIFQ1 USB-Serial
EJ1
Conversion Cable is con-
nected to port A and the
EST2-2C-MV3 CX-Thermo
Support Software is started.
Connection
port
Port A/Port B
Port A
The Programmable Terminal
communications conditions
are different from the EJ1
communications settings.
Possible cause
Supply power from the EDU power
supply terminal.
Refer to the Programmable Terminal,
RS-422A Converter, and EJ1 manu-
als and wire the connection correctly.
Use a SAP for the EJ1.
Use a SAP for direct Programmable
Terminal connection.
Refer to the product manual and
make the correct switch setting for
the communications conditions.
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.
Move the Programmable Terminal to
the System Screen and set the com-
munications destination for the com-
munications port on the
Communications Setting Screen to
Temperature Controller and the baud
rate to 38.4 (kbps).
Section 7-4
Countermeasure
175