These stations are used by the operators to control the functional unit.
The control stations are activated by the Supervision station, according to the operational situation
The input is data entered manually by the operators
Typically, the control stations should not include alerting, and should not support normal operation. To avoid confusion, these features may be implemented in separate units.
The output, consisting of data and control, is sent to the functional unit via the corresponding gates.
Updated on 23 Jul 2016.