BECKHOFF BC3100 - Manual (Page 26)

PROFIBUS-DP basics
26 BC3100
the terminating resistor will vary, which may affect the data transfer.
Configuration of the masters
The Profibus bus terminal controller operates with two different process
images: the PLC process image to which all bus terminals or only some of
the bus terminals configured on the one specific BC3100 are assigned, as
well as the Profibus DP process image to which a part of the bus terminals
can be assigned. For details of parameterization and configuration, please
refer to the chapter entitled Profibus bus terminal controller BC3100.
The Profibus master exchanges a coherent input and output data block
with each Profibus coupler/controller. The master assigns the bytes from
this data block from the addresses of the process image. The
COMProfibus software supports configuration when using the PLC master
of the IM308-C. Use the manufacturers' corresponding tools for other
masters (see also chapter entitled Master device file and type file).
Support files for master configuration:
Master / Software Remarks File
IM308-B
COMET200
BK3000TD.200
IM308-C
COMProfibus
Bitmaps BUSKLEMN.BMP
BUSKLEMS.BMP
English
Language-
independent
BK3000AD.200
BK3000AE.200
BK3000AX.200
General (for BK30XX) BK30BECF.GSD
BK3010.GSD
General (for BK31XX) BK31BECE.GSD
BK3110.GSD
General (for BC3100) BC3100.GSD
Example for the master
IM308-C
Interfacing for PLC Simatic
S5
In an example, we will show what settings have to be made in
COMProfibus to configure the Profibus master IM308-C.
Diverse bus terminals are connected to a BC3100:
In this example, the bus terminal controller's PLC program requires 5 bytes
of input signals (DP outputs of the master) and returns 6 bytes of output
signals (DP inputs of the master).
The corresponding entries for the identifiers can be selected conveniently
by way of the order number. The following window shows the selected
identifier: