14 - 17 14 - 17
MELSEC
14 TROUBLESHOOTING
14.4.3 Flowchart to use when L.ERR. LED turns on
YES
NO
An error occurs.
Has the MNETH utility standard?
Stop the user program and activate
the MNETH utility.
Select "Board Information" screen and
identify the error type from LED status.
Select "Loop monitor" screen.
NO
Is forward loop normal?
YES
Check the cable for the host forward loop.
Did the data link begin?
Complete
Check the cable for the host reverse loop.
Consult with dealer regarding the problem.
Check for the following error causes:
(1)
(2)
(3)
(4)
Is the error type "PRM.E"?
Remove the error cause(s).
Duplication of station No. for MELSECNET/H board.
Coexistence of any different network types within the same network.
In the case of MELSECNET/H Extended mode, use of the
MELSECNET/H board of ROM version 2X or later.
(For checking the ROM version, refer to Appendix 5)
Error code stored in SW0055.
NO
YES
YES
NO
1
1: For the error code in SW0055, refer to the "Q Corresponding MELSECNET/H Network System Reference
Manual (PLC to PLC network)".
The error code in SW0085 can be also checked by monitoring SD85 with Device Monitor Utility.
(Refer to "MELSEC Data Link Library Reference Manual".)
Summary of Contents for Q80BD-J71BR11
Page 2: ......
Page 24: ...A 22 A 22 MEMO ...
Page 50: ...4 6 4 6 MELSEC 4 FUNCTION MEMO ...
Page 92: ...6 36 6 36 MELSEC 6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION MEMO ...
Page 132: ...10 2 10 2 MELSEC 10 MELSEC DATA LINK LIBRARY MEMO 10 ...
Page 138: ...11 6 11 6 MELSEC 11 PROGRAMMING MEMO ...
Page 164: ...12 26 12 26 MELSEC 12 APPLICATION FUNCTIONS MEMO ...
Page 166: ...13 2 13 2 MELSEC 13 ERROR CODE MEMO 13 ...
Page 223: ......