Siemens SIMATIC ET 200AL, System Manual

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Functions
5.8 Direct data exchange
PROFINET with STEP 7
238
Function Manual, 05/2021, A5E03444486-AL
The connections for direct data exchange between the sending CPU and the receiving CPUs
are set up.
Figure 5-84 Connection for direct data exchange with multiple S7-1500 CPUs
Configuring transfer areas for direct data exchange
The following graphic shows the order for configuration of the transfer areas.
① First, you configure the transfer area between the sender and one receiver. You configure this transfer area at the
PROFINET interface of the sender.
② You then configure the transfer areas between the sender and the other receivers. You configure these transfer
areas at the PROFINET interfaces of the receivers.
Figure 5-85 Order of configuration of transfer areas in the case of multiple receivers
To configure a transfer area for direct data exchange, follow these steps:
1.
Select the PROFINET interface X1 of the sending CPU and change to the table view, "I/O
communication" tab.
2. In the table view of the network view, select a communication relation for direct data
exchange between the sender and receiver 1.
3. Navigate to the properties of the I/O connection to "General" > "Direct data exchange" >
"Transfer areas".