Communication in SIMATIC S7-300/1200/1500
11.3 Advantages of task sharing
SIWAREX WP321
96 Manual, 07/2014, A5E33715669A-02
Advantages of task sharing
The weight is calculated in the SIWAREX module like in a separate electronic weighing
system. However, thanks to integration in SIMATIC, it is possible to directly transfer the
weight value to the PLC program. This results in sensible sharing of tasks: the weighing
functions are performed in the SIWAREX module, while interlocking and signal linking are
performed in the PLC.
SIWAREX "Ready for use" takes over the task of a standardized program in the SIMATIC
S7.
An FB handle several tasks:
● It controls communication between the SIMATIC CPU and the SIWAREX module
● It transfers commands and adjustment values to the SIWAREX module according to the
process trend
● It prepares the scale data for visualization
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