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Status Area and Troubleshooting
Section 9-2
Local Data Link Participation Status: IR 90
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.
Data Link Status: IR 91 to
IR 93
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.
Note
Refer to
5-4 Checking Data Link Status
for details on status flags.
Bit Status and Error Processing
Data Link Status
1: Local node data link participating
0: Local node data link not participating or data link
inactive
Node 2
Node 4
Node 6
Node 1
Node 3
Node 5
IR 91
IR 92
IR 93
PLC status
0: Inactive (user program not running)
1: Active (user program running)
Communications error (data link reception)
0: Normal
1: Error
PLC's CPU Unit error
0: Normal
1: Error
Data link participation
0: Not in data link or data link inactive
1: In data link
Offset error
0: Normal
1: Error
Error: Offset exceeds
number of send words.
Insufficient (short) receive area
0: Sufficient
1: Insufficient
Insufficient: Receive
area is smaller than
send area. Excess data
is truncated; other data
is received.
Remaining receive area
0: Not remaining
1: Remaining
Remaining: Receive
area is larger than send
area. Data is received
and remaining words
are cleared.
Bit status
Probable cause
Probable remedy
PLC’s CPU Unit error is 1:
ON
A fatal PLC error, non-fatal
PLC error, or a watchdog
timer error has occurred.
Refer to the PLC’s opera-
tion manual and correct
the error. If the error occurs
again, replace the PLC.
The Unit is mounted to a
non-compatible PLC.
and mount onto the correct
PLC.
Summary of Contents for C200HW-CLK21
Page 3: ...iv ...
Page 9: ...x ...
Page 12: ...xiii TABLE OF CONTENTS Index 367 Revision History 373 ...
Page 13: ...xiv ...
Page 19: ...xx ...
Page 57: ...32 Application Precautions Section 1 5 Example CX Programmer Response Timeout Setting ...
Page 69: ...44 Message Service Procedure Section 2 2 ...
Page 111: ...86 Constructing Networks with Repeater Units Section 3 4 ...
Page 154: ...129 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 261: ...236 Response Codes Section 6 7 ...
Page 297: ...272 Message Delay Times Section 8 4 ...
Page 353: ...328 Handling Precautions Section 9 6 ...
Page 364: ...339 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 365: ...340 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 369: ...344 Standard Models Appendix A ...
Page 391: ...366 Using the Relay Terminal Block Appendix C ...
Page 397: ...372 Index ...
Page 401: ...376 Revision History ...