Comtrol DeviceMaster Up, Руководство пользователя

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Chapter 2. Programming Interface DeviceMaster UP PROFINET CbA User Guide : 2000409 Rev. D - 19
General Serial Transfer Procedure: Handshaking Disabled
2.7.2. General Serial Transfer Procedure: Handshaking Disabled
When you disable handshaking, only HSK_ID is used as a transfer flag between producer and consumer, and
producer and consumer behave according to the following state machine:
Consumer Producer
1. Consumer loops reading
HSK_ID
.
2. Producer writes packet of
serial data to
DATA
variable.
3. Producer increments
HSK_ID
.
4. Consumer observes incremented
HSK_ID
, consumes
DATA
.
Repeat