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Communication using function blocks
6.3 Using the function blocks for connecting to a communications processor
Time Sequence Chart for FB 2 P_RCV
The figure below illustrates the behavior of the parameters NDR, LEN and ERROR,
depending on how the EN_R and R inputs are wired.
Figure 6-2
Note
The EN_R input must be set statically to "1". The EN_R parameter must be supplied with
logic operation result "1" throughout the entire receive request.
112
Time Sequence Chart FB_2_P_RCV
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03
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