Functions
5.8 Direct data exchange
PROFINET with STEP 7
234
Function Manual, 05/2021, A5E03444486-AL
5.8.2
Configuring direct data exchange between two S7-1500 CPUs
The procedure for configuring direct data exchange between two IO controllers is described
below.
First, you create the communication relation for direct data exchange. You then configure
transfer areas for the connection.
Requirements
•
STEP 7 V16 or higher
•
Two S7-1500 CPUs firmware version V2.8 or higher
•
IRT is configured:
–
Both CPUs are in one sync domain.
–
One CPU is the sync master, and the other CPU is the sync slave.
–
Ports are interconnected.
Setting up the communication relation for direct data exchange
To set up the communication relation for direct data exchange between two S7-1500 CPUs,
follow these steps:
1.
Select the PROFINET interface X1 of the sending S7-1500 CPU.
2.
Change to the table view of the network view, tab "I/O communication".
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 communication direction:
–
←
: Communication partner is sender
–
→
: Communication partner is receiver
The communication relation for direct data exchange between the two S7-1500 CPUs is set
up.
Figure 5-80 Communication relation for direct data exchange
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