Omron GQ-CRM21, Operation Manual

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5 - 2
Troubleshooting
CompoNet Gateway Unit for CC-Link Operation Manual
5-
1-
2 Tro
uble
s
hoo
tin
g Sequ
en
ce
Wh
en an
Er
ro
r Occur
s
5
Initialization Errors
Indicators:
❍
: Lit,
✳
: Flashing,
●
: Not lit,
---
: Not applicable
Exception Processing
Indicators:
❍
: Lit,
✳
: Flashing,
●
: Not lit,
---
: Not applicable
MS NS
Seven-
segment
display
Item
Probable cause of
error
Unit operation
after error
detection
Countermeasures
❍
Red
●
H3 Hardware test
error, CC-Link
ASIC test An error was
detected while
checking the CC-
Link ASIC in the
Gateway Unit. The Gateway Unit
stops operating
and goes into
standby mode. Replace the
Gateway Unit.
●
❍
Red
H3 Hardware test
error, CompoNet
ASIC test An error was
detected while
checking the
CompoNet ASIC in
the Gateway Unit.
❍
Red
❍
Red
H3 Hardware test
error, RAM test An error was
detected while
checking the RAM in
the Gateway Unit.
✳
Red
●
H4 Communications
mode setting
error An illegal rotary
switch setting was
detected for the
communications
mode (i.e., the switch
is set to 7, 8, or 9). Correct the
communications
mode setting, and
then restart the
Gateway Unit.
MS NS
Seven-
segment
display
Item
Probable cause of
error
Unit operation
after error
detection
Countermeasures
❍
Red
●
Not lit Unit-related error A hardware error
occurred. WDT refreshing is
stopped and the
Gateway Unit
completely stops. There may be some
noise or other
interference
occurring. Eliminate
the source of the
noise and then turn
ON the power to the
Gateway Unit again.
❍
Red
●
Not lit Unit WDT error There was a WDT
timeout for the Unit. The Gateway Unit
completely stops.