Watlow CLS - Manual (Page 147)

Appendix B: Enhanced Process Control
139
Process Variable Retransmit
The PV Retransmit feature allows you to select the PV of any loop in
the controller to be directed to any heat or cool output, including the
loop which is providing the PV to be retransmitted. Once an output is
defined as a “PV Retransmit”, it cannot be used for PID control.
Setting Up a PV Retransmit
In order to set up a PV Retransmit, you must configure the following
variables:
1) PV assignment: the number of the loop that provides the PV for the
retransmit calculation.
2) Minimum input: the lowest value of the PV input. If the PV falls
below the minimum, the output will stay at the minimum value. This
value is expressed in the same engineering units as the input loop.
3) Minimum output: the output value (0-100%) which corresponds to
the minimum input.
4) Maximum input: the highest value of the PV input. If the PV goes
above the maximum, the output will stay at the maximum value. This
value is expressed in the same engineering units as the input loop.
5) Maximum output: the output value (0-100%) which corresponds to
the maximum input.