Mitsubishi Electric MELSEC FX3U Programming Manual page 949

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Error PLC operation at
code error occurrence
Special block error [M8449 (D8449)]
*1
020
*1
021
*1
080
Continues
operation
*1
090
*1. The unit number 0 to 7 of the special function unit/block error is put in
Contents of error
General data sum error
General data message error
FROM/TO error
Peripheral equipment access error
38 Error Check Method and Error Code List
38.4 Error Code List and Action
Action
Check for the correct connection of extension
cables.
This error occurs in the execution of operation.
• Review the program, or check the contents of
the operands used in the applied instructions.
• Check whether the specified buffer memories
exist in the counterpart equipment.
• Check for the correct connection of extension
cables.
• Check the cable connection between the
programming panel (PP) / programming device
and the PLC.
• Check for the correct connection of extension
cables.
.
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38
A
B
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