A-7
Appendix 4. Error Code List
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
b8
b0
to
b2
to
Error occurrence address
Error code
Table 4.1 Error code list
Error
code
Cause
Actions taken when an error occurs
Corrective action
1
l
Write was executed
to the area where
write is not al-
lowed(read only).
l
The address where the error occurred is
stored.
l
When the write operations were executed
to multiple write areas, the address where
the error was first detected is retained.
l
Execute the error reset (Y12 :
ON).
l
Delete the write program which
writes in a area where write is
not allowed (read only).
2
l
Write was executed
to the unusable
area.
l
The written data is retained as is.
l
The address where the error occurred is
stored.
l
When the write operations were executed
to multiple write areas, the address where
the error was first detected is rateined.
l
Write 0 to the address where the
error occurred. (The error is
reset when 0 is written.)
l
Delete the write program which
writes in the unusable area.
3
l
Write was executed
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.
l
The written data is retained as is.
l
The operation is continued with the data
prior to the write operation.
l
The address where the error occurred is
stored.
l
When the write operations were executed
to multiple write areas, the address where
the error was first detected is retained.
l
Execute the error reset by the
following procedure :
1
Change to the setting mode
2
Write the correct value.
3
Execute the error reset (Y12 :
ON).
l
In order to change from the
operation mode to the setting
mode, turn off Y11 after setting
the PID stop.
l
When the error reset is exe-
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.
