Omron GQ-CRM21, Operation Manual

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CompoNet Gateway Unit for CC-Link Operation Manual
5-2
Tr
ou
blesh
oot
ing
CC-L
ink
Ne
two
rk Er
ro
rs
5
5-2 Troubleshooting CC-Link Network
Errors
The communications status on the CC-Link network can be checked on the CC-Link communications
indicators on the Gateway Unit.
Refer to this information when troubleshooting.
To troubleshoot errors in the CC-Link network, refer to documentation for the CC-Link Master Unit.
Indicators:
❍
: Lit,
✳
: Flashing,
●
: Not lit,
---
: Not applicable
Indicators:
❍
: Lit,
✳
: Flashing,
●
: Not lit,
---
: Not applicable
Indicator
Operating status
L RUN L ERR SD RD
❍
Green
● ✳
Yellow
❍
Yellow
Normal transmission
❍
Green
✳
Red
(inconsistent
intervals)
✳
Yellow
❍
Yellow
Normal data communications is being performed, but noise is
occasionally causing CRC errors.
❍
Green
✳
Red
(consistent
intervals)
✳
Yellow
❍
Yellow
The station number setting of the Gateway Unit was changed
while the power was ON.
❍
Green
✳
Red
(inconsistent
intervals)
●
❍
Yellow
Reception data is causing CRC errors and a response is not
possible.
❍
Green
● ●
❍
Yellow
Data cannot be received by the local station.
●
✳
Red
(inconsistent
intervals)
✳
Yellow
❍
Yellow
A polling response was performed, but CRC errors occurred
during refresh reception, so a send response is not possible.
●
✳
Red
(inconsistent
intervals)
●
❍
Yellow
CRC errors occurred for data that was sent to the local station.
● ● ✳
Yellow
❍
Yellow
CC-Link data links are not started.
● ● ●
❍
Yellow
There is no data for the local station, or noise prevented the local
station from receiving the data.
● ● ● ●
Communications for CC-Link data links have been interrupted.
● ❍
Red
●
--- The station number setting or baud rate setting is not correct.
MS NS
Seven-
segment
display
Item
Probable
cause of error
Unit operation after error
detection
Countermeasures
✳
Red
---
H2 Version
compatibility
error The protocol
versions are
different.
Links are not started when the
power supply is turned ON.
If this error occurs when links are
active, the links remain active and
only the error display is performed.
When the correct frame is
received, the error display is
cleared and the links are started. ---