Omron GX-AD0471, User Manual, Page: 289 / 394

12 - 9
12 Troubleshooting and Maintenance
GX-series EtherCAT Slave Unit User’s Manual
12-
1 T
rou
blesh
oo
ting
12
12-
1-2 Er
ror
s Un
ique
to Each Slave Unit
Slave Units with digital
outputs
When the output is ON,
nothing is output although
the output indicator is
turned ON.
The I/O power is not
supplied. Check that the I/O power
is supplied.
I/O power supply voltage
is outside the rated range.
Set the I/O power supply
voltage within the rated
voltage.
Wiring with the connected
device is incorrect. Check the wiring with the
connected device.
Terminal block screws are
loosened. (Terminal block
type only)
Check if terminal block
screws are loosened.
A connected device is
disconnected. Check the wiring with the
connected device.
A connected device is
defective. Replace the connected
device.
Although the output is ON,
nothing is output and
Slave Unit's output
indicator does not turn ON
either.
A communications error
occurred.
Check if a
communications error
occurred.
Cannot hold outputs when
communications errors
occur. The Unit is set to clear
outputs at
communications errors. Change the setting to hold
outputs at
communications errors.
Cannot clear outputs
when communications
errors occur. The Unit is set to hold
outputs at
communications errors. Change the setting to
clear outputs at
communications errors.
Analog I/O Slave Units
The analog data values
are different from
expected or the analog
data error is too large.
The user adjustment error
is too large. Execute user adjustment
again.
Even if the I/O range
setting is changed,
expected analog input
value is not set.
Alternatively, expected
analog value is not output.
Setting changes are not
reflected unless the unit
power supply is turned ON
again after making
changes.
Turn ON the unit power
supply again after
changing the setting.
The I/O range cannot be
set with the range setting
switch.
The Pin8 is turned OFF (to
allow the setting via SDO
communications). This is
the default setting.
Turn Pin8 ON (to allow the
setting via range setting
switch).
Slave Unit type Symptom Cause Measures