Siemens CU240S DP-F User Manual

Commissioning (software)
5.9 Commissioning with PROFIBUS DP
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
5-93
Conversion of extended PROFIBUS DP functionality
The different masters, or different modes of data exchange, are represented by appropriate
channels in the SINAMICS G120 range of inverters:
● Acyclical data exchange with the same class 1 master use of DPV1 functions READ and
WRITE. The content of the transferred data block (DS) corresponds in this case to the
structure of the acyclical parameter channel according to PROFIdrive Profile, version 4.0
(http://www.profibus.com/organization.html) (with data block 47 (DS47)).
● Acyclical data exchange using a SIEMENS start-up tool (class 2 master) (e.g.
STARTER). The start-up tool can acyclically access parameter and process data in the
inverter.
● Acyclical data exchange with a SIMATIC HMI (second class 2 master). The SIMATIC HMI
can acyclically access parameters in the inverter.
● Instead of a SIEMENS start-up tool or SIMATIC HMI, an external master (class 2 master)
as defined in the acyclical parameter channel according to PROFIdrive Profile version 4.0
(with DS47) can access the inverter.
Properties of the DPV1 parameter channel
● One 16-bit address each for parameter number and subindex.
● Concurrent access by several PROFIBUS masters (class 2 master, 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.
Structure of parameter request and parameter response
A parameter request consists of three segments:
● Request header
ID for the request and number of parameters which are accessed.
● Parameter address
Addressing of a parameter. If several parameters are accessed, there are
correspondingly many parameter addresses. The parameter address appears only in the
request, not in the response.
● Parameter value
Per addressed parameter, there is a segment for the parameter values. Depending on
the request ID, parameter values appear only either in the request or in the reply.

Siemens CU240S DP-F Specifications

General

Brand	Siemens
Model	CU240S DP-F
Category	Control Unit
Language	English