Other Errors - Omron NSJ CONTROLLERS - 03-2008 Operation Manual

Troubleshooting and Maintenance

10-1-4 Other Errors

184
Check the following items when the NSJ Controller is not operating as
expected.
Error
Cannot switch to MON/
RUN mode.
Communications with the
Controller Section are
temporarily disabled
when the Display Sec-
tion's System Menu is
written.
NSJ Controllers cannot
communicate with each
other.
When the power is turned
ON, "Connecting ..." is
displayed and the Unit
waits to connect.
Items in the System
Menu changed after
transferring a project from
the Support Software.
Screen data cannot be
transferred.
Cannot transfer data
(screen data or ladder
program) to or from the
Memory Card.
Corrective measures
Check whether Controller Section DIP switch 7 was set to
ON when the power was turned ON.
After reading data from the simple backup Memory Card
to the Controller Section, operation won't start until the
power is turned ON again with DIP switch 7 set to OFF.
When the Display Section's communications settings are
changed and written, the Display Section is reset and
communications with the Controller Section are also
reset. The Display Section cannot communicate with the
Controller Section until communications restart.
Check whether the routing table is set correctly. If the
routing table has not been created, set the Display Sec-
tion's network routing table in the Controller Section.
It is possible that a device is not connected properly to the
serial port or the device's power supply is not ON. Check
the serial port's communications settings, connected
devices, and connecting cables.
If no devices are connected to the serial port, set the
port's communications settings to "Do not use."
The power supply to Expansion Racks connected via an
I/O Control Unit may be OFF. Check the power supply to
the Expansion Racks.
When a project is transferred from the Support Software,
setting items (such as communications settings) are also
transferred.
Verify that there isn't a communications cable connected
to serial port C (PORT C).
Serial port C (PORT C) functions primarily as a control
port for data processing at the Controller Section and it is
used when connecting a bar code reader by no-protocol
communications or a Temperature Controller by Compo-
Way/F communications.
When connecting the Support Software, use serial port A/
B (PORT A/PORT B).
Check the Memory Card slot.
The Memory Card slots used in the Display Section and
Controller Section are different. Use the Display Section's
Memory Card slot when transferring screen data and use
the Controller Section's Memory Card slot when transfer-
ring the ladder program.
Section 10-1