Siemens SINAMICS DCM Manual page 415

Descriptions of functions
10.3 Communication according to PROFIdrive
Note
Addressing
• PROFIBUS DP:
The addressing is carried out via the logical address or the diagnostics address.
• PROFINET IO:
The addressing is only undertaken using a diagnostics address which is assigned to a
module as of slot 1. Parameters cannot be accessed via slot 0.
Figure 10-9
Properties of the parameter channel
● One 16-bit address each for parameter number and subindex.
● Concurrent access by several PROFIBUS masters (master class 2) or PROFINET IO
supervisor (e.g. commissioning tool).
● Transfer of different parameters in one access (multiple parameter request).
● Transfer of complete arrays or part of an array possible.
● Only one parameter request is processed at a time (no pipelining).
● A parameter request/response must fit into a data set (max. 240 bytes).
● The task or response header are user data.
416
Reading and writing data
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SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001