Appendix B Task Codes Specifications
Response task code H00 Normal execution Classification Response
Function
Indicates that the requested task code has been executed normally.
Format
H00 (a) (b)
(a) Executed task code
(b) Execution result data
Refer to the description of each task code for details.
Response task code H01 Task code error Classification Response
Function
Indicates that there is an error in the task code requested for execution.
(Task code undefined, parameter error, etc.)
Format
H01 (a) (b)
(a) Task code requested for execution
(b) Return code
Description
Return code details are shown below:
Return code Description
H01 Task code is undefined.
H02 Function selection code is undefined.
H04 Abnormal address
H05 Abnormal step number or word number
H06 Abnormal I/O code
H07 Abnormal I/O number
H09 Write was attempted more than the memory capacity.
H0A Insufficient memory size
B-4
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