Functions
5.8 Direct data exchange
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
Direct data exchange with multiple receivers (1:n)
The following figure shows the direct data exchange with multiple S7-1500 CPUs. In this
case, the sending S7-1500 CPU provides the data of its output transfer areas to multiple
S7-1500 CPUs. Each receiving S7-1500 CPU has its own input transfer areas.
①
Transfer relation between the user program and the transfer area. The user program and the transfer areas ex-
change input and output data via this path.
②
Communication relation for direct data exchange You configure the communication relations in STEP 7. You create
transfer areas for direct data exchange in the properties of the communication relations.
Figure 5-79 Direct data exchange with multiple receivers (1:n)
Applications
•
Deterministic, isochronous I/O communication between multiple S7-1500 CPUs
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