Communications configuring
3-46 System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003
3.5 PROFIBUS DP coupling
The following hardware and software are additionally required to
configure and run the PROFIBUS DP coupling:
• COM PROFIBUS
Order No. 6ES5 895-6SE12
• SS52load
SS52load is included in COM PROFIBUS from V3.1.
• DP-capable PC card to download the COM database via
COM PROFIBUS
SIMADYN D has the following characteristics on PROFIBUS DP:
• Master
The SS52 communications module can be operated on PROFIBUS
both alone (stand alone) and with other masters in multi-master
operation.
• Slave
In addition to the master functionality, there is also the slave
functionality. Both of these functionalities can be used simultaneously
or separately.
• Shared input
Each slave connected to PROFIBUS DP is assigned just one master
(the parameterizing master) and at first can only communicate with
this master. Additional masters can read the slave input data using the
”Shared input”. SIMADYN D supports this functionality as master and
slave.
• SYNC and FREEZE
The outputs/inputs of several slaves can be read/written in
synchronism using the SYNC and FREEZE utilities. SIMADYN D
supports these utilities as master.
• Data lengths
A maximum of 244 bytes can be transferred in each direction and for
each slave.
• Data transfer times
For short telegrams (up to 32 byte), only the SIMADYN D sampling
time and the DP bus circulating time are included in the data transfer
time. For longer telegrams, the software processing times of the SS52
communications module must also be included (max. 5 ms).
• Consistency
Data within a telegram is always consistent.
Additionally
required hardware
and software
Characteristics
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