LOGO! Analog Comparison - Real Time vs Set Point

Hi

I need to save an analog (0-10v) value from a sensor as a set point and compare as follows:

1. When I press a teach button (i.e. Digital Input) whilst the 0-10v sensor is measuring a product on a conveyor, that will become the set point and will need to be stored to memory.

2. When the 0-10v sensor sees the next  product, I need to compare the 0-10v measurement against the saved set point and then trigger an output based on the comparison of the two values (i.e. real time vs set point)

Re: Step 1

The saved value can be stored in the Aq of the Maths Instruction.

However Re:Step 2

I can't find a way to compare the value of the next product (i.e Analog Value) with the saved set point value

Any suggestions?

Excellent! There's always a way.

Thanks!