A curve block will not work as expected in a Menta application

Issue

Even though the curve block is set to range between 0-100 the block just stays at a fixed output somewhere in the curve output range.

Product Line

TAC Vista, SmartStruxure Solution

Environment

Menta

Cause

The curve requires the first entry of the X value to be the lowest value and then the subsequent values to be larger than the previous X entry.

Resolution

Adjust the order of the XY entries on the curve block so the first entry in the X will be the lowest value.

Here is an example of a Curve that will not work. Note the first X entry is -2 and the last X entry is -6. 

 

To correct this curve -6 is the lower number so this should be the first X entry

Here is a example of the curve that has the correct X entry order