Function Assignment And Virtual Modules - Festo CPX-FB14 Electronic Manual

2. Commissioning

2.4.13 Function assignment and virtual modules

2−62
Function assignment lets you operate various expanded CPX
terminals with only one PLC software program. You can, for
example, configure a maximum expansion of a CPX terminal
in your system and, for the other terminals, suppress the
modules that are not physically present. Object 4800 is used
for this: With it, you can define modules as virtual" or physi
cally present and so show or suppress them. There are no
address shifts through the use of virtual modules.
An additional application possibility of the function
assignment is to configure the CPX terminal with extensions
for another function of the CPX terminal and only show these
virtual modules later with the object 4800.
In addition, you can use the object 4801, to check the
nominal configuration of the CPX terminal.
This function is available only for digital I/O modules.
The following objects can only be written if the following
conditions are met:
The CPX−FB14 is in pre−operational mode.
No errors are generated from object 4800,0.
Object 4000 = 0.
Festo P.BE−CPX−FB14−E N en 0810b