Omron CX-MOTION-NCF - V1.8, Operation Manual

Page: 129 / 138

108
Troubleshooting Section 11-3
Cannot connect to the Position Control Unit.
Check the following items.
-The PLC has been turned ON.
-The connection cable has been connected.
The PLC has not been turned ON. Turn ON the PLC.
The cable between the PLC and
personal computer has been dis-
connected. Check the cable connections.
Communications failed due to
noise or other cause. Execute the operation to go online
again.
MECHATROLINK communica-
tions failed due to noise or other
cause when setting up the abso-
lute encoder. Check the connections of the MECHA-
TROLINK communications cable.
Could not establish communications with
the Servo Drive. Check for unit and axis
errors. MECHATROLINK communica-
tions settings are not correct. Change the communications settings in
the Unit Parameters and transfer them
to the Position Control Unit.
The axis map (scan list) does not
match with the actual configuration
of the Servo Drives. Add or delete axes appropriately in the
Axis Map Setting Window, set appropri-
ate axis numbers, and transfer the axis
map to the Unit. Otherwise, change the
axis numbers in the Servo Drives
appropriately.
An error that cannot be cleared
from the CX-Motion-NCF has
occurred in the Servo Drive. Clear the error in the Servo Drive.
Wiring for the MECHATROLINK
communications is not correct. Check whether the MECHATROLINK
cable has been disconnected or wired
correctly.
The Servo Drive has not been
turned ON. Turn ON the Servo Drive.
There are mismatches between the param-
eters in the Position Control Unit and trans-
ferred parameters. Transfer default values
of the Unit Parameters to the Position Con-
trol Unit and write them to the flash memory.
After restarting the Position Control Unit,
transfer the parameters again. Unit Parameters could not be
transferred because the scan list in
the Position Control Unit did not
match with the axis map of the
Unit Parameters on the CX-
Motion-NCF. Transfer the default values of the Unit
Parameters from the CX-Motion-NCF.
Write them to the flash memory.
Restart the Position Control Unit, and
then transfer the parameters again.
Failed to send a command to the Servo
Drive.
Stop communications. Setting up an absolute encoder
was attempted for an incremental
encoder. Check the type of encoder used by the
Servo Drive.
Setting up an absolute encoder
was attempted for an absolute
encoder that was set to operate as
an incremental encoder. Check the setting of Servo parameter
P002.2.
Setting up an absolute encoder
was attempted when there was an
error other than a Servo Drive
backup error or checksum error. Check the Servo Drive error code and
clear the error.
Message Probable cause Remedy