Communication
11.2 PROFINET
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
919
Configuring logical network connections between two devices
After you configure the rack with the CPU, you are now ready to configure your network
connections.
In the Devices and Networks portal, use the "Network view" to create the network
connections between the devices in your project. First, click the "Connections" tab, and then
select the connection type with the dropdown, just to the right (for example, an ISO on TCP
connection).
To create a PROFINET connection, click the green (PROFINET) box on the first device, and
drag a line to the PROFINET box on the second device. Release the mouse button and your
PROFINET connection is joined.
Refer to "Device Configuration: Creating a network connection" (Page 806) for more
information.
Configuring the Local/Partner connection path between two devices
Configuring General parameters
You specify the communication parameters in the "Properties" configuration dialog of the
communication instruction. This dialog appears near the bottom of the page whenever you
have selected any part of the instruction.
Refer to "Device configuration: Configuring the Local/Partner connection path (Page 807)"
for more information.
In the "Address Details" section of the Connection parameters dialog, you define the TSAPs
or ports to be used. The TSAP or port of a connection in the CPU is entered in the "Local
TSAP" field. The TSAP or port assigned for the connection in your partner CPU is entered
under the "Partner TSAP" field.
Configuring transmit (send) and receive parameters
Communication blocks (for example, TSEND_C and TRCV_C) are used to establish
connections between two CPUs. Before the CPUs can engage in PROFINET
communications, you must configure parameters for transmitting (or sending) messages and
receiving messages. These parameters dictate how communications operate when
messages are being transmitted to or received from a target device.
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