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Appendix 4. Error Code List - Mitsubishi Electric MELSEC-A Series User Manual

Temperature control module, temperature control module with heater disconnection detection function (hardware).
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Appendix 4.
The error code for the A1S64TC is stored in the buffer memory address 0.
The error code is stored in the lower 3 bits of address 0, and the buffer memory
address where the error was detected is stored in the upper 8 bits.
b15
Error occurrence address
Error
Cause
code
1
Write was executed
l
to the area where
write is not al-
lowed(read only).
2
Write was executed
l
to the unusable
area.
3
Write was executed
l
to the area during
the operation mode
where write is al-
lowed only in the
settting mode.
Operation mode :
When Y11 is on.
When Y11 is off
and the PID con-
tinuous setting
(buffer memory
A9 : 1) is being
executed.
Error Code List
to
b8
Table 4.1 Error code list
Actions taken when an error occurs
The address where the error occurred is
l
stored.
When the write operations were executed
l
to multiple write areas, the address where
the error was first detected is retained.
The written data is retained as is.
l
The address where the error occurred is
l
stored.
When the write operations were executed
l
to multiple write areas, the address where
the error was first detected is rateined.
The written data is retained as is.
l
The operation is continued with the data
l
prior to the write operation.
The address where the error occurred is
l
stored.
When the write operations were executed
l
to multiple write areas, the address where
the error was first detected is retained.
A-7
b2
to
b0
Error code
Corrective action
Execute the error reset (Y12 :
l
ON).
Delete the write program which
l
writes in a area where write is
not allowed (read only).
Write 0 to the address where the
l
error occurred. (The error is
reset when 0 is written.)
Delete the write program which
l
writes in the unusable area.
Execute the error reset by the
l
following procedure :
Change to the setting mode
1
Write the correct value.
2
Execute the error reset (Y12 :
3
ON).
In order to change from the
l
operation mode to the setting
mode, turn off Y11 after setting
the PID stop.
When the error reset is exe-
l
cuted before modifying the
value of the area where write is
allowed only in the setting
mode, it is modified to the
contents of the buffer memory.

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