Operating Instructions

1 Alarms and Messages

1.1 General Alarms and Messages

1.1.1 INTERRUPTION of supply or connection
Cause:
Alarms and messages which are evaluated by a relevant PLC input can be caused
not only by defect of function, but also by interruption of:
- supply of a monitored circuit or contacts of a switching device
- interconnection of a monitored circuit or contacts of a switching device of a PLC input,
or defect of inputs of the PLC unit
Alarms and messages which are relat ...