Siemens SIMATIC S7-300 Getting Started page 62

Configuration
4.10 Configuring safety-related communication between the TF-CPU and drives with safety functions
Procedure
To configure the master-slave coupling in HW Config, proceed as follows:
Step Description
1 In HW Config, double-click the technology (slot 3) and then select the "F-Configuration" tab. Click "Configure".
The "Properties - DP Slave" dialog box opens.
2 Select the "Technology" line in the "Coupling" tab and click "Connect".
The ID of the technology as an internal DP slave appears in the "Active Connection" area.
Confirm with "OK".
3 Click "Configure" again. The "F-Configuration" tab is now visible in the "Properties - DP Slave" dialog box.
4 The "Password for safety program" dialog box opens.
5 Enter a password for the safety program and confirm with "OK".
6 Open the "F-Configuration" tab and click "New" to configure a safety-related communication link between the
TF-CPU and a drive, PROFIsafe module on the DP (DRIVE).
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CPU 317TF-3PN/DP: Controlling a SINAMICS S120 with Safety Functions
Getting Started, 10/2013, A5E02982990-04