I/O Controller (IOC)

The microcontroller on the module handles all critical tasks for the parameterized processing functions. In addition, it communicates interactively with the RTU I/O bus.

All configuration data and processing parameters are loaded by the communication unit via the RTU I/O bus.

The module is equipped with a serial interface to the RTU560 I/O bus on the backplane.

The binary output unit performs the following processing functions for individual signal types:

– Control of command output duration

Command monitoring function:

– Checking of output relays on the module (m out of 16)

– Monitoring of the output bit pattern by reading back the output status

– Monitoring of the switching voltage before and during output (24 V DC coil voltage)

– Command output duration monitoring

During initialization and operation, the module performs a series of tests. If a fault occurs, it will be reported to the communication unit.

All fault conditions affecting the function of the module are signaled as common faults by the red LEDs. Module faults are detected by the communication unit.