Festo CPX-FB23, Electronic Manual

Page: 29 / 122

1. Installation
1−15
Festo P.BE−CPX−FB23−EN en 0308NH
Setting the number of stations per slave or the number of
I/O bytes
4
The function of this DIL switch depends on the set operating
mode of the CPX terminal (see also Tab.1/1).
Operating mode
Remote I/O Operating mode Remote
Controller Setting DIL switch 4
Number of stations per
slave Number of I/O bytes
1 station per slave Reserved for future extensions:
1 station per slave
Provision is made for 8 I/O bytes
for communication between the
field bus node and the FEC
4.1: OFF
4.2: OFF
2 stations per slave Not permitted 4.1: ON
4.2: OFF
3 stations per slave 4.1: OFF
4.2: ON
4 stations per slave 4.1: ON
4.2: ON
(factory setting)
Tab.1/7: Number of stations per slave
With operating mode Remote I/O" you can set the number
of stations per slave with the 2−element DIL switch 4.
The required setting of the number of stations depends on
the equipment fitted on the CPX terminal (modules used) as
well as whether or not the I/O diagnostic interface is used.
The assigned I/O bits are in some cases reserved for system
functions and are therefore not available for the address
range of the CPX modules.