Omron GX-AD0471, User Manual, Page: 285 / 394

12 - 5
12 Troubleshooting and Maintenance
GX-series EtherCAT Slave Unit User’s Manual
12-
1 T
rou
blesh
oo
ting
12
12-
1-1 Er
ror
s tha
t Can be C
hecked with Status Indicator and
Action
s to
Take
On
− −
DF
Process data
communica-
tions timeout *
A communications
error occurred.
After checking the
following items, restart
the Slave Unit according
to the specification of
connected EtherCAT
Master Unit.
[Item about
communication cable]
•
Is the
communications
cable wired correctly?
•
Are any cables
disconnected or loose
in the part that
connects to the
connector?
•
Is the cable length
appropriate?
•
Is the
communications
cable of the
recommended
specification?
[Item about power
supply]
•
Is the power supply
voltage within the
specification range?
•
Is the power supply
capacity sufficient?
Malfunction due to
noise
•
If there are devices in
the vicinity that
generate noise, take
necessary measures
against the noise to
protect the EtherCAT
Master Unit and Slave
Units and the
communications
cable.
•
The noise resistance
deteriorates if a cable
other than those of
the recommended
specification is used.
Use the
communications
cable of the
recommended
specification.
Link in physical
later OFF
Communications
cable
disconnection
occurred.
Check to see if the
cable is disconnected or
loose in the part that
connects to the
connector.
[PWR]
indicator
[L/A IN]
[L/A OUT]
LED
[RUN]
indicator
[ERR]
indicator
Description Cause Actions