Appendix B Task Codes Specifications
Task Subcommand Response task code Return code Error cause
code Code Code Code
H18 Setting the calendar H01 Not-executable H03 Operation error H0C Abnormal set value
clock
RTC cannot be accessed H10 Abnormal RTC, or not mounting
30 second H02 Normal execution H00
adjustment Not-executable H03 RTC cannot be accessed H10 Abnormal RTC, or not mounting
Undefined H03 to
HFF
Abnormal task code H01 Undefined
subcommand
H02 Undefined subcommand is set.
H1C Normal execution H00
H20
Initialize all user H00 Normal execution H00
memory area
Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
RAM error H0A READ/WRITE check results did not
match
CPU is running H0B CPU is running
Initialize HI-FLOW H01 Normal execution H00
area
Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
CPU is running H0B CPU is running and “modify during
RUN” mode is not set
Initialize HI-LADDER H02 Normal execution H00
area
Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
CPU is running H0B CPU is running and “modify during
RUN” mode is not set
Zero clear all user H03 Normal execution H00
memory area Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
CPU is running H0B CPU is running
Undefined H04 to
HFF
Abnormal task code H01 Undefined
subcommand
H02 Undefined subcommand is set.
H23 Write to parameter H00 Normal execution H00
area (A) Abnormal task code H01 Abnormal address H04 Transfer address is outside the specified
range of parameter area (A)
Abnormal number of
steps/words
H05 Number of transfer steps are outside the
specified range
Memory over H09 “Address + number of steps” exceeds the
parameter area
Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
CPU is running H0B CPU is running
Write to HI-FLOW area H01 Normal execution H00
Abnormal task code H01 Abnormal address H04 Transfer address is outside the designated
range of HI-FLOW area
Abnormal number of
steps/words
H05 Number of transfer steps are outside the
designated range
Memory over H09 “Address + number of steps” exceeds the
flow area
Not-executable H03 Occupancy code
mismatch
H03 Local station is READ-occupying CPU
Not occupied H07 Local station is not occupying CPU
CPU is running H0B CPU is running
Write to HI-LADDER H02 Normal execution H00
area
Abnormal task code H01 Abnormal address H04 Transfer address is outside the designated
range of HI-LADDER area
Abnormal number of
steps/words
H05 Number of transfer steps are outside the
designated range
Memory over H09 “Address + number of steps” exceeds the
ladder area
B-46
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