5 Electrical connections
5.7.1 Distributed I/O units
3HAC 16245-1 A 113
Section 5.7: I/O units
5.7.1 Distributed I/O units
General Up to 20 units can be connected to the same controller but only four of these can be installed
inside the controller. Normally a distributed I/O unit is placed outside the controller.
Connection The maximum total length of the distributed I/O cable is 100 m (from one end of the chain to
the other end).
The controller can be one of the end points or be placed somewhere in the middle of the chain.
Parameter setup For setup parameters, see User’s Guide, section System Parameters, Topic: I/O Signals.
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