8 TROUBLESHOOTING
MELSEC-Q
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*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
Error
Code
(SD0)
*1
Error Contents and Cause Corrective Action
Corresponding
CPU
6101
The CPU module detected an error
during the handshake for tracking.
Check the condition of the other
stations.
Q4AR
• A timeout error occurred in tracking
(data transmission).
(This error may be caused by
tracking cable removal or other
system power-off (including reset).)
• The error occurred at a startup since
the redundant system startup
procedure was not followed.
• Check the CPU module or tracking
cable. If the error still occurs, this
indicates the CPU module or
tracking cable is faulty. (Contact
your local Mitsubishi representative,
explaining a detailed description of
the problem.)
• Confirm the redundant system
startup procedure, and execute a
startup again.
QnPRH
6102
A data sum value error occurred in
tracking (data reception).
6103
• A data error (other than sum value
error) occurred in tracking (data
reception).
(This error may be caused by
tracking cable removal or other
system power-off (including reset).)
• The error occurred at a startup since
the redundant system startup
procedure was not followed.
6105
• An error (e.g. retry limit exceeded)
occurred in tracking (data
transmission).
(This error may be caused by
tracking cable removal or other
system power-off (including reset).)
• The error occurred at a startup since
the redundant system startup
procedure was not followed.
6106
• A timeout error occurred in tracking
(data transmission).
(This error may be caused by
tracking cable removal or other
system power-off (including reset).)
• The error occurred at a startup since
the redundant system startup
procedure was not followed.
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