Extended functions
BK3xx0 79Version: 4.3.0
Fig.47: Process image of the production machine
The process signals of a DP slave (Bus Coupler BK3110, BK3120 or BK3520) are always transferred in a
Data_Exchange telegram, in which the outputs are sent by the DP master and the inputs are received in the
associated telegram response. In the PROFIBUS DP master interface, the process images exchanged with
the Bus Couplers are mapped to the process images of the control according to a mapping rule.
Process images of the machine configurations
As shown in the two examples in the figure below, the mapping rule in the PROFIBUS DP master interface
changes, depending on which machine extensions are used (there are two examples here).
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