Message execution process (Rung = TRUE)

The process diagram describes the message instruction events that occur when the Rung condition is True.

Process diagram showing the message execution process when the rung condition is true — Message execution process

Com Queue: Message requests added to the Com Queue have a buffer allocated and processed by the communication task. The queue size limit is 4.

Wait Queue: Messages that cannot be added to the Com Queue are added to the Wait Queue to be processed at a later time. The Wait Queue does not have a size limit.

MSG_MODBUS (Modbus message)

Message execution processes and timing diagrams

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