Siemens SIMATIC S7-1500 Function Manual page 117

S7 communication
4. In the drop-down list box of the partner end point, select a connection partner. You can
select an unspecified device or a CPU in the project as the communication partner.
The following parameters are automatically entered as soon as you have selected the
connection partner:
– Name of the partner end point
– Interface of the partner end point. If several interfaces are available, you can change
– Interface type of the partner end point
– Subnet name of both end points
– IPv4 address of the partner end point
– Name of the connection which is used for the communication.
5. If required, change the connection name in the "Connection name" input box. If you want
to create a new connection or edit an existing connection, click on the "Select connection"
button on the right side next to the input box for the connection name.
Note
The PUT and GET instructions between two communication partners can only run if both
the hardware configuration and the program part for the partner end point have been
loaded into the hardware. To achieve fully functional communication, make sure that you
load not only the connection description of the local CPU on the device but also that of
the partner CPU as well.
Configuring S7 connections for e.g. BSEND/BRCV
If you want to use the instructions for BSEND/BRCV for S7 communication, for example, you
first need to configure an S7 connection.
To configure a S7 connection, follow these steps:
1. Configure the communications partners in the network view of the Devices & networks
editor of STEP 7.
2. Select the "Connections" button and the "S7 connection" entry from the drop-down list.
3. Using drag-and-drop, connect the communication partner with each other (via an
interface or local end point). If the required S7 subnet does not yet exist, it is created
automatically.
You can also set up a connection to unspecified partners.
4. In the "Connections" tab, select the row of the S7 connection.
5. Set the properties of the S7 connection in the "Properties" tab in the "General" area, for
example the name of the connection and the interfaces of the communications partner
that will be used.
For S7 connections to an unspecified partner, set the address of the partner.
You can find the local ID (reference of the S7 connection in the user program) in the
"Local ID" area.
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the interface as required.
Function Manual, 11/2019, A5E03735815-AH
Communication