Manual

4. Parametrizing blocks
4−3
Festo P.BE−SFC−DC−PB−S7−EN en 0604NH
4.1 Overview of parametrizing blocks
For parametrizing the SFC−DC, different methods can be used
depending on the blocks:
 parametrizing with the block PRM_FPC via the cyclic data
(DPV0)
 parametrizing with the block PRM_DPV1_SFB using the
system function blocks SFB52/SFB53 (DPV1)
 parametrizing with the block PRM_DPV1_SFC using the
system functions SFC58/SFC59 (DPV1)
 automatic transfer of several parameters with the block
PRM_DB−FILE"
and one of the parametrizing blocks.
The choice of transfer method depends primarily on the con
troller used. Transfer via the cyclic data is possible with any
DP controller, but requires memory space in the logical ad
dress range, which can cause problems under certain circum
stances with many slaves on the bus.
In
the case of transfer via DPV1 with the system function
moules SFB52/SFB53 from Siemens, you must make sure
that this transfer procedure is supported by the controller.
With the system functions SFC58/SFC59 for older controllers,
Siemens therefore offers the possibility of transferring para
meters DV1−conform to the controller.
For compatibility reasons the block
interfaces of all transfer
types are identical.
Please note
All blocks address parameters with subindices as per
DPV1. This means that the subindices must be transferred
from 0 ... n−1.