Omron SYSMAC CS1W-RPT01 Operation Manual page 332

Status Area and Troubleshooting
Local Data Link Participation Status: IR 90
Data Link Status: IR 91 to
IR 93
Node 2
IR 91
Node 4
IR 92
Node 6
IR 93
Bit Status and Error Processing
Data Link Status
Note Data link status is valid only when the local node is participating in the data
link. Confirm that the Local Data Link Active Bit is ON before referencing the
data link status.
When the first data link status word is not set or is set to the default (0000) for
either the manually set data link tables or automatically set data link tables,
the data link status is stored in the following words for nodes 1 to 6 only.
Node 1
Node 3
Node 5
Note Refer to 5-4 Checking Data Link Status for details on status flags.
Bit status
PLC's CPU Unit error is 1:
ON
1: Local node data link participating
0: Local node data link not participating or data link
inactive
PLC status
0: Inactive (user program not running)
1: Active (user program running)
PLC's CPU Unit error
0: Normal
1: Error
Communications error (data link reception)
0: Normal
1: Error
Data link participation
0: Not in data link or data link inactive
1: In data link
Offset error Error: Offset exceeds
0: Normal number of send words.
1: Error
Insufficient (short) receive area
0: Sufficient
1: Insufficient
Remaining receive area
0: Not remaining
1: Remaining
Probable cause
A fatal PLC error, non-fatal
PLC error, or a watchdog
timer error has occurred.
The Unit is mounted to a
non-compatible PLC.
Section 9-2
Insufficient: Receive
area is smaller than
send area. Excess data
is truncated; other data
is received.
Remaining: Receive
area is larger than send
area. Data is received
and remaining words
are cleared.
Probable remedy
Refer to the PLC's opera-
tion manual and correct
the error. If the error occurs
again, replace the PLC.
Refer to 1-2-4 Controller
Link Unit Models and PLCs
and mount onto the correct
PLC.
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