Appendix B Task Codes Specifications
How to read the execution condition table
The table indicates the CPU status in which the task code is executable and the memory occupancy status.
For the details of the CPU status, refer to CPU status read of task code H10.
1] Execution condition example 1
CPU status
STOP RUN HALT ERROR
× × × ×
READ occupancy Occupancy
{ × × {
WRITE occupancy status
{ : Executable
× : Not-executable
In example 1, the task code can only be executed when the CPU is in the STOP or ERROR status and the memory
is WRITE-occupied.
2] Execution condition example 2
CPU status
STOP RUN HALT ERROR
{ { { {
READ occupancy Occupancy
{ { { {
WRITE occupancy status
In example 2, the task code is executable if the CPU is occupied.
B-2
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