Signal Reverse - Analog Parameters

Reverses an analog signal to indicate its complement with respect to the full-scale range (e.g. reverses a percent open valve position to percent closed).

SPANHI and SPANLO are switched in conversion and scaling to engineering units.  SPANHI is applied to 0 value from field device.  SPAN LO is applied to maximum value from field device.

Parameter Signal Reverse defines the initial Signal Reverse field for Tags and BLOCK:PARAMETERS created using this parameter.   Parameter Signal Reverse can save time and typing or enforce a standard if this parameter will be used in a predictable way to create Tags or Blocks.