Single CS31 Bus on CPU COM PortΒΆ

The CPU program contains different types of HA-CS31 function blocks.

The following picture describes function blocks and functions for a HA-CS31 system to work with a CPU COM1 CS31 Bus connected with I/O modules. The function blocks indicated with dotted lines are not mandatory for a HA-CS31 system to run.

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Function Blocks in CPU

The following function blocks and functions are required to be called and downloaded to the PLC:

  • HA_CS31_CONTROL
  • HA_CS31_DIAG
  • HA_CS31_CALLBACK_STOP