Operation On External Master Systems - Siemens COMBIMASTER 411 Operating Instructions Manual

Issue 03/02
7.5

Operation on external master systems

The MICROMASTER 4 can operate only as a standard DP slave on an external
master.
Required GSD file
The device master file (GSD file) contains all information required by a DP master
system to integrate the MICROMASTER 4 into its PROFIBUS-DP configuration as
a standard DP slave.
Provided the external master system allows the direct integration of GSD files, file
SIEM80B5.GSD can be copied directly into the appropriate subdirectory.
If the external master is not compatible to this extent, the necessary information
must be derived manually from file SIEM80B5.GSD.
Exchanging data with MICROMASTER 4 without standard data blocks
In cases where block package "Drive ES SIMATIC" cannot be used, the user
program must adhere to the system properties with respect to data consistency.
This means in particular that system functions of SIMATIC S7 (SFC14
(DPRD_DAT) and SFC15 (DPWR_DAT)) or corresponding means must be used to
access > 2 words for the PKW and PZD areas.
In this case, the PKW area and PZD area must be regarded as two mutually
independent, consistent data areas.
PKW
PPO1 (4 words)
−
PPO3
Extended PZD:
(4 words)
−
PROFIBUS Communication Module
6SE6400-5AV00-0BP0
LINKS TO PROFIBUS MASTER SYSTEMS
PZD
(2 words)
(2 words)
(4 words)
(4 words)
Operating instructions
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