Technical data

Communication
9.2 Communication according to PROFIdrive
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
611
9.2.4 Acyclic communication
9.2.4.1 General information about acyclic communication
Description
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 set/write data set services are available for acyclic communication.
The following options are available for reading and writing parameters:
● S7 protocol
This protocol uses the STARTER commissioning tool, for example, in online mode via
PROFIBUS.
● PROFIdrive parameter channel with the following data set:
– PROFIBUS: Data block 47 (0x002F)
The DPV1 services are available for master class 1 and class 2.
Note
Please refer to the following documentation for a detailed description of acyclic
communication:
Reference: PROFIdrive Profile V4.1, May 2006, Order No: 3.172
Addressing:
PROFIBUS DP, the addressing can either take the form of the logical address or the
diagnostics address.
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Figure 9-17 Reading and writing data