Omron E3NW-CCL, User Manual

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7 Troubleshooting and Maintenance
E3NW-CCL CC-Link Digital Sensor Communications Unit User’s Manual (E431)
7-1
Tr
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7
7-1
-3 Err
or No
tifica
tion Me
thods
Reference
Refer to the CC-Link master station for error codes that can be checked on the CC-Link master
unit.
External
cause
Location of problem
Detection
method
Notification
method
Solution
Noise
Communications
CC-Link CRC error
• ERR indicator lit.
• Error station
detection in the
CC-Link
diagnostics on the
master station
Stop and restart
CC-Link
communications.
Serial
connection with
Sensor Amplifier
Unit
PV Error
(Checksum
Error)
SS indicator lit red.
RX(n+2)3 turns ON. Cycle the power
supply.
Serial
connection with
Distributed
Sensor Unit
Power supply --- SS indicator not lit.
Cycle the power
supply.
Dis-
connection
Communications
CC-Link
MFP3N
communications
error detection
• ERR indicator lit.
• Error station
detection in the
CC-Link
diagnostics on the
master station
Check the cable
connections at
the location
where the error
occurred.
Serial
connection with
Sensor Amplifier
Unit
PV Error
(Checksum
Error)
SS indicator lit red.
RX(n+2)3 turns ON.
Check the
connections for
communications
interfaces and
communications
cables.
Serial
connection with
Distributed
Sensor Unit
Power supply --- SS indicator not lit.
Check the power
supply cable.