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9.8. Error Processing
The errors that may occur during the program execution are described below.
9.8.1.
Protocol Macro Error Codes
The SCU detects these errors by monitoring the macro operation.
The error codes include either (1) PMCR instruction error or (2) Communications error (e.g.,
transmission error), and are stored in H400 (Output_PMCR_ErrorCode).
[Error code list]
Error code
Sequence No.
#0002
error
Data read/write
#0003
area exceeded
error
Protocol data
#0004
syntax error
Transmission
#000F
error
Additional Information
For details and troubleshooting on the protocol macro errors, refer to 12-3 Troubleshooting of
the CJ Series Serial Communications Units OPERATION MANUAL (Cat. No. W336).
Name
Classification
(1)PMCR
instruction error
(1)PMCR
instruction error
(1)PMCR
instruction error
(2)Communications
error
Description
The sequence number specified for
the PMCR instruction does not exist
in the Unit.
When data is written or read to/from
the CPU Unit, the specified area
range is exceeded.
A code that cannot be executed
occurs while the protocol macro is
executed. (Example: A header occurs
after a delimiter.)
Communications cannot perform due
to an error in the transmission path.
9．Program
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