Acyclic Communication; General Information About Acyclic Communication - Siemens SINAMICS S120 Function Manual

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Communication

10.1 Communication according to PROFIdrive

Acyclic communication

With acyclic communication, as opposed to cyclic communication, data transfer takes place

only when an explicit request is made (e.g. in order to read and write parameters).

The "Read data record" and "Write data record" services are available for acyclic

communication.

The following options are available for reading and writing parameters:

● S7 protocol

● PROFIdrive parameter channel with the following data sets:

This protocol uses the STARTER commissioning tool, for example, in the online mode via

– PROFIBUS: Data block 47 (0x002F)

The DPV1 services are available for master class 1 and class 2.

– PROFINET: Data block 47 and 0xB02F al global access, data set 0xB02E as local

Please refer to the following documentation for a detailed description of acyclic

communication:

Reference: PROFIdrive Profile V4.1, May 2006, Order No: 3.172

• PROFIBUS DP, addressing is carried out via the logical address or the diagnostics

• PROFINET IO, addressing is only undertaken using a diagnostics address which is

assigned to a module as of socket 1. Parameters cannot be accessed via socket 0.

Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3

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