C. Configuration with CPX node
C−13
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
C.1.5 Acyclical parametrisation with DPV1, parameter READ/WRITE
When using the FB13, there are two ways of accessing the
data.
A direct task for reading/writing the module parameters
is possible, but only for modules 0...9 (data record
number (FB52/53) = 5 + 72 + 15*module number)
Generally valid is an indirect task via the command box,
which has the additional advantage of
being able to write
the data as of a certain offset. In this way the bytes 0...7
from the startup parametrisation do not have to be over
written (slot = 100 + module number; index = 21)
Further information on acyclical parametrisation can be found
in the P.BE.CPX−FB13−... description
General access via command
box
Slot 3: Indexed addressing of the objects
Index Name Length
[byte]
Access Record number (Siemens)
16 Command box 4 r/w 9
17 Read Box 64 r 10
18 Write Box 64 w 11
Command box: Access to CMAX module parameters
Byte 1 2
3 4
Contents Slot no. Index module data Offset data
CMAX 100 + module number 21 8 0
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