Commissioning
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
8-29
8.7.3 Commissioning the CPU as DP slave
Prerequisites for commissioning
• The DP master is configured and programmed.
• If the MPI/DP interface of CPU 318-2 DP is to be operated as DP interface, you must
configure the interface accordingly.
• You must program and configure CPU 31x-2 DP/31xC-2 DP as DP slave prior to
commissioning. That is, in STEP 7 you must:
– "switch on" the CPU as DP slave,
– assign a PROFIBUS address to the CPU,
– assign a slave diagnostic address to the CPU,
– specify whether the DP master is an S7 DP master or another DP master,
– specify the address areas for data exchange with the DP master.
• All other DP slaves are programmed and configured.
GSD Files
When working on an IM 308-C or non-Siemens system, you require a GSD file in
order to be able to configure CPU 31x-2 DP/31xC-2 DP as DP slave in a DP
master system.
COM PROFIBUS as of V 4.0 includes this GSD file.
When working with an older version or another configuration tool, you can
download the GSD file under:
• Internet URL http://www.ad.siemens.de/csi/gsd
or
• via modem from the SSC (Interface Center) Fürth, Germany; Phone number (0911)
911/737972
Configuration and parameter assignment message frame
STEP 7 supports you in configuring/programming CPU 31x-2 DP/31xC-2 DP.
Should you require a description of the configuration and parameter assignment
frame, in order to use a bus monitor for example, you can find it on the Internet at
http://www.ad.siemens.de/csinfo under article ID 1452338.
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