Omron SYSMAC LINK C1000H-SLK21-V1 System Manual page 136

Troubleshooting
Main code
25: Unit error
26: Command error
Data Link Status Errors
Data link status Point to check
PC Error ON PC Error Flag
(bit 01, 05, 09, or 13 in the
data link status flags)
Communications Communications Error Flag
error ON (bit 02, 06, 10, or 14 in the
data link status flags)
Node not in data Data Link Member Flag
link (bit 03, 07, 11, or 15 in the
data link status flags)
Data Link Table Error
Messages
SSS/CVSS
Error
Write not The number of LR Area data link words is greater than 64 words. The maximum number of LR Area
possible data link words is 64 words in C-series PCs.
The total number of data link words is greater than 2966 words (918 words when C200HW-SLK13/23
SYSMAC LINK Units are included). Make sure that the total number of data link words is 2966 words
or less (918 words or less when C200HW-SLK13/23 SYSMAC LINK Units are included).
The node number of a C200HW-SLK13/23 SYSMAC LINK Unit has been set incorrectly when the
total number of data link words exceeds 918. Refer to 5-8 Data Link Precautions for more details on
node number settings.
The refresh parameter's beginning DM or LR word setting is incorrect. When setting the beginning LR
word for C-series SYSMAC LINK Units, LR words LR 00 to LR 63 correspond to CV-series addresses
CIO 1000 to CIO 1063. Refer to page 44 for details on data link areas for different PC models.
The refresh parameter's beginning DM or LR word setting is incorrect and the regions specified by the
beginning DM or LR words cannot be used as a data link area. The data area regions that can be
used as a data link area vary from PC to PC. Refer to page 44 for details on data link areas for
different PC models. (Also, C-series addresses LR 00 to LR 63 correspond to CV-series addresses
CIO 1000 to CIO 1063.)
The refresh parameter's beginning status word setting is incorrect. Make sure that the beginning
status word specifies a region that can be used for the data link status area (16 words). Refer to 5-8
Data Link Precautions for more details.
The refresh parameter's PC model setting is set to "CV-series." Set the PC model to "Other" when the
setting is for a C-series SYSMAC LINK Unit.
Other Errors
122
Sub- Probable cause
code
12
05 The service is being executed.
07 Service cannot be executed from local
node because the local node is not
part of the data link.
0B Cannot clear error because the cause
of the error still exists.
The following table lists data link status errors, their probable cause, and pos-
sible remedies. Check all nodes in question.
A fatal error has caused the CPU
Unit to halt (FALS instruction gen-
erated, etc.) CPU Unit error.
Connected to an incompatible
PC.
Error resulting from noise.
Unit in question is not part of the
Network.
Communications cycle time too
short.
Node in question is not part of the
data link.
The following tables list data link table errors, their probable cause, and possible
remedies for the SSS/CVSS.
Probable Cause and Remedy
The table below lists other errors not covered above. Probable causes and rem-
edies are also provided.
Execute the command again after the
service has been completed or aborted.
Execute the service from a node that is
part of the data link.
Eliminate the cause of the error and
execute the ERROR CLEAR command.
Probable cause
Section 8-1
Remedy
Remedy
Clear the error in the CPU Unit,
referring to the Unit's Operating
Manual and Installation Guide.
Connect only to compatible PCs.
Run an internode echo test; if the
results are not OK, re-check the
operating environment.
Add the Unit to the Network.
Increase communications cycle
time.
Add the node in question to the
data link.