CS31 Bus Extension with CM574-RS Module

Task Configuration for the CPU Program

At least, two tasks must be defined:

• HA_Task for the mandatory HA-CS31 function blocks HA_CS31_CONTROL, HA_CS31_DIAG, HA_CS31_DIAG_VIA_CM574. Recommended HA task cycle time is equal to CS31 cycle time (as indicated in Automation_Builder), but at least 30 ms. Priority must be higher than priority of the other tasks in the project.
• Main task for the application itself: lower priority than the HA_Task. Cycle time to be decided based on CPU loading, but not less than HA cycle time.

Note

HA_Task priority must be higher than the main task priority.

Task Configuration for the CM574 Program

The program which calls function block HA_C31_DIAG_ON_CM574 must be called and assigned to a cyclic task.

The cycle time of this task must not be more than the cycle time of the HA_Task above.

For further information, please refer to Example_AC500_HA_CS31_V242_3ADR023070M0201.pdf.