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