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MELSEC-Q
11 TROUBLESHOOTING
(7) Automatic communication function error code storage area
(a) When an error occurs in the automatic communication function, the error
code corresponding to the automatic communication parameter 1 to 64 is
stored in this area.
(b) When the automatic communication function operation status bit turns ON,
the error code is stored into the corresponding area.
(c) The automatic communication function error code storage area is not
cleared.
The error code is overwritten when a new error occurs.
(8) Error log area
(a) Up to 32 latest errors are stored into the error log area as an error history.
Error Log Area Name
Address
Number of errors occurred
0CFE
H
(3326)
Error log write pointer
0CFF
H
(3327)
Error code
0D00
H
(3328)
Exception code
0D01
H
(3329)
Function code
0D02
H
(3330)
Local station port No.
0D03
H
(3331)
Target IP address
0D04
H
to 0D05
H
(3332 to 3333)
Error log 1
Target device port No.
0D06
H
(3334)
Error log 2 to 32 (as in error log 1)
0D08
H
to 0DFF
H
(3336 to 3583)
(b) Number of errors occurred
1) The number of errors entered into the error log is stored.
2) If 65536 or more errors have occurred, the count stops at FFFF
H
(65535).
(c) Error log write pointer
The number of the latest error log is stored.
0
: No error (no entry of error log)
1 to 32 : Error long number where the latest error log is entered