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299
Status Area and Troubleshooting
Section 9-2
Data Link Status: First Data Link Status Word + 0 to + 15
Note
Refer to
for details on status flags.
Troubleshooting with Status Flags
Data Link Status
Node 2
Node 4
Node 6
Node 8
Node 10
Node 12
Node 14
Node 16
Node 18
Node 20
Node 22
Node 24
Node 26
Node 28
Node 30
Node 32
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.
Node 1
Node 3
Node 5
Node 7
Node 9
Node 11
Node 13
Node 15
Node 17
Node 19
Node 21
Node 23
Node 25
Node 27
Node 29
Node 31
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.
Communications error is 1:
ON
The relevant node is not in
the Network.
Enter the node in the Net-
work.
A communications error
has occurred as a result of
noise.
Conduct an echoback test
using the Controller Link
Support Software and if
this does not correct the
error, check the usage
environment.
A communications error
has occurred.
Refer to
page 274
and troubleshoot accord-
ingly.
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 ...