Siemens S7-1200 PROFIBUS - Configuration and Program Blocks; STEP 7 Configuration Process Overview

SIMATIC CM 1242-5
Operating Instructions, 01/2023, C79000-G8976-C245-06
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Configuration and program blocks
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4.1 Configuration
Configuration in STEP 7
You configure the DP modules and DP master systems in SIMATIC STEP 7. You will find the
required version in the section Requirements for operation (Page 10).
When configuring with STEP 7 as of V11.0, the CM 1242-5 is set to the protocol variant DP-V1
as default.
Configuring in third-party systems via GSD file
To allow configuration in third-party systems, a GSD file is available. You will find this on the
following page of Siemens Industry Online Support:
Link: (https://support.industry.siemens.com/cs/ww/en/view/113652)
The protocol variant DP-V1 or DP-V0 is decided during operation by the setting of the
connected DP master.
Overview of the STEP 7 configuration
Follow the steps below when configuring:
1. Create a STEP 7 project.
2. Insert the required SIMATIC stations.
3. Insert the communications modules and other required modules in the stations.
4. Select the PROFIBUS interface of the master module and create a DP master system using
the shortcut menu (right mouse button).
5. Configure the DP master system in the following parameter groups:
– General
– Network settings
– Cable configuration
– Additional network nodes
– Bus parameters
6. Network the PROFIBUS slaves with the master system:
– Either using the shortcut menu command with the PROFIBUS interface selected
– Or in the "Operating mode" parameter group of the slave module
Configuring the master is described in the manual of the master module.