Commissioning the DP/PA Link
6-5
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
6.2.2 Configuring the PROFIBUS-PA master system
The PA field devices can be integrated as standard slaves in the SIMATIC PDM or
in STEP 7 via their device master files.
Configuration with STEP 7
Step Activity
1 If you have not already done so, start STEP 7 and open your SIMATIC station or
SIMATIC H station (for redundant operation) in HW Config.
2 If the required field devices do not appear in the PROFIBUS-PA directory in the
hardware catalog:
Import the device master files of the PA field devices using the Extras > Install
new GSD menu command.
3 Drag the required PA field devices from the hardware catalog to the PA master
system that appears behind the IM 157.
When the PA field devices are configured, HW Config checks that the quantity
structure is adhered to and outputs an error message if the permitted quantities
are exceeded.
PROFIBUS address of the IM 157 in the PA master system
For S7 standard operation, the IM 157 uses the address 2.
For redundant operation, the two IM 157 modules use addresses 1 and 2. In
addition, address 125 is blocked for PA field devices.
The first possible address for a PA field device is 3 in both cases.
Editing the PA field devices in the user program
The process data of the PA field devices should only be accessed in the user
program through the process images.
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