The setting value of the external controller is read into the HMI via an analog input channel. Then positioner operation of the internal controller passes the signal on directly to the analog output channel. The analog output channel acts on the actuator being positioned with 4 – 20 mA.

[V951-01] Signal processing in positioner operation.

You can use positioner operation in two different ways:

• Permanent

• Variable with switching between controller and positioner operation: Switching between controller and positioner operation is performed in this case by an external signal.