Communication using function blocks
6.3 Using the function blocks for connecting to a communications processor
PtP coupling and configuration of CP 340
108 Manual, 04/2011, A5E00369892-03
Time Sequence Chart for P_SEND (FB 3)
The figure below illustrates the behavior of the DONE and ERROR parameters, depending
on how the REQ and R inputs are wired.
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Figure 6-1 Time Sequence Chart for P_SEND (FB 3)
Note
The REQ input is edge-triggered. A positive edge at the REQ input is sufficient. The result of
the logic operation must not be at "1" at any point during transfer.
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