A new lookup table used on a Sigma Analogue Output (AO) Object does not work

Issue

Created a new lookup table for an analogue output (AO) object to provide 10% steps and not 1% steps.  Displaying the object value always shows 1% steps.

Product Line

Satchwell Sigma

Environment

Sigma Controller (All Versions)

Cause

The analogue output object value is the input value for the lookup table and the output of which is then passed to the A to D converter and then to the physical output.

Resolution

The value can be seen by a multimeter connected to the physical output.

If the value of the output needs to be displayed via the Sigma front end then a programmable object is required to process the lookup table and then cross referenced to a standard analogue output object (with the default lookup table).

Example of programmable object:

10 Xflo = POINT 0|51

20 YFLO = LOOKUP (1812, XFLO)

30 RETURN VIA TEXT 92 VALUE YFLO

Where POINT 0|51 is the control/input object and 1812 is the lookup table number.