Expert Functions
5.2 Extending a PROFIdrive message frame
Connection of the SINAMICS S120 to the Technology CPU
130 Product Information, 09/2011, A5E00480378-04
5.2 Extending a PROFIdrive message frame
5.2.1 Address areas
Introduction
The message frame types described in the "PROFIdrive message frame (Page 127)"
chapter are used to transfer the drive data.
Additional PROFIdrive message frames are available to establish a connection with the
distributed input/outputs on PROFIBUS DP (DRIVE), with integrated inputs/outputs on the
control unit, or with extensions on the Drive-CLiQ.
The PROFIdrive message frames depend on the type and the function of the system used.
The number of the data words used depends on the number of data items to be transferred.
The transferred data can be used in two address areas of the Technology CPU that are
assigned as follows:
Address area 0 - 63
The data can be used directly in the PLC user program. The MC_ReadPeriphery or
MC_WritePeriphery technology function is used to read or write the data, respectively.
This address area is used for the data exchange with the distributed I/Os on the isochronous
PROFIBUS DP (DRIVE) or for reading and writing the drive parameters in cyclical operation.
Technology objects cannot access this data.
Address area >= 64
The data is used by the technology objects. This data is read and written by means of the
connection of the parameters to the PROFIBUS interface.
This address area can be used, for example, to realize the following functions:
● Querying a hardware limit switch at the integrated inputs/outputs
● Querying a hardware limit switch at the isynchronous peripherals
● Triggering of outputs that can be used as output cam outputs
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