Siemens SIMATIC ET 200AL, System Manual

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Functions
5.8 Direct data exchange
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
237
5.8.3 Configuring direct data exchange between multiple IO controllers
The procedure for configuring direct data exchange between multiple S7-1500 CPUs is
described below.
First, you set up the communication relations for direct data exchange. You then configure
transfer areas for the communication relations.
Requirements
• STEP 7 V16 or higher
• S7-1500 CPUs firmware version V2.8 or higher
• IRT is configured:
– All CPUs are in one sync domain.
– One CPU is the sync master, and the other CPUs are sync slaves.
– Ports are interconnected.
Setting up the communication relations for direct data exchange
To set up the connection for direct data exchange between multiple S7-1500 CPUs, follow
these steps:
1.
Select the PROFINET interface X1 of the sending CPU.
2. Change to the table view of the network view, "I/O communication" tab.
The PROFINET interface X1 of the CPU is shown in the "Partner 1" column.
3. In the "Partner 2" column at "<Drop or select the device here>", select the PROFINET
interface of the communication partner from the drop-down list as the connection partner.
Note the transfer direction:
– ← : Connection partner is sender
– → : Connection partner is receiver
The connection for direct data exchange between the two S7-1500 CPUs is set up.
4. Repeat step 3 for every other receiving IO controller.