Structure

The module is equipped with 16 analog current outputs (0/4…20 mA) that are pairwise

electrically isolated from the supply voltage and the remaining channel pairs. The analog

current value is set with a D/A converter, measured by two independent, internal measuring

devices and functionally tested.

If two modules are redundantly connected, only 8 odd outputs (AO1. AO3…AO15) are

available. The even outputs (AO2. AO4…AO16) are not used.

The module automatically diagnosis open-circuits (OC) and can be evaluated in the user

program, see Chapter 4.3.

The safety-related 1oo2 processor system for the I/O module controls and monitors the I/O

level. The data and states of the I/O module are made available to the processor modules

via the redundant system bus. The system bus has a redundant structure for reasons of

availability. Redundancy is only ensured if both system bus modules are inserted in the

base plates and configured in SILworX.