Mitsubishi Electric Q03UDVCPU User Manual page 178

(2) Operations of special relay and special register
The following shows the operations of special relay and special register during the operation of clearing the IP
address storage area (flash ROM).
(a) Operations of special relay and special register during the operation of clearing the
IP address storage area (flash ROM)
Clear request
(SM1295)
Clear complete
(SM1296)
Clear error
(SM1297)
Clear error cause
(SM1299)
(b) Operations of special relay and special register when the operation of clearing the
IP address storage area (flash ROM) failed
Clear request
(SM1295)
Clear complete
(SM1296)
Clear error
(SM1297)
Clear error cause
(SM1299)
(3) Cause of failure to clear the IP address storage area (flash ROM)
If the processing of clearing the IP address storage area (flash ROM) is not completed, the error cause is stored
in SD1299 (IP address storage area clear error factor).
Value in SD1299
200
300
400
176
Clear start Clear complete
END END
processing processing
ON
OFF
ON
OFF
ON
OFF
Clear start
END END
processing processing
ON
OFF
ON
OFF
ON
OFF
An error occurred during clearing.
H
Clearing cannot be performed since the following functions are being executed.
• Online Program Change
• Export to ROM format
H
• Write to PLC (flash ROM)
• CPU module data backup/restoration function
Clearing is started during write processing execution.
H
END END
processing processing
0
Clear failed
END END
processing processing
Error cause
Error cause
Turn off and then on the
clear request (SM1295)
to turn off the system during
the END processing.
Turn off and then on the
clear request (SM1295)
to turn off the system during
the END processing.