Simple Ladder Problem

[afm]

I have a program that does a 7 second "scan" sensor calibration routine whenever a setting (setting is called assistance level or "AL" and ranges from 5-10) is adjusted on the HMI. Currently, a scan occurs every time the AL setpoint setting is changed (the rescan is triggered when the HMI buttons are pressed to adjust the AL). I want to reduce the frequency of the scans that occur, and I only need it to scan when the AL is changed to 5 OR when the AL is change to 6-10 (rescan calibration is not needed as the sensor is not affected significantly between AL settings 6-10). For example. If I am at AL 5 and change to AL 10, I want a scan to occur, but if I switch from 10 to 6, I do not need to rescan. But if I go from 6 to AL 5, I want to rescan. I attached my current code. for the current code. For context, while the MinTimer is timing, I run the rescan, so I need some help with updating the "AssistLevelChange" variable to only trigger with the above scenario.

 

[afm]

I believe I figure it out, simple variable mix up was my issue

 

[drbitboy]

The other logic to trigger a scan is not shown.

 

[afm]

Thanks for this. The AL setpoint actually ranges from 0-10, but for the context of the sensor scans, I am only looking at when AL is between 5-10 range. This was my approach. I could have used an "if AL GE 6-10" function block to keep it concise. I like your process to identify switching between the rescan thresholds using the memory bits, thank you.





When the AL is changed the MinTimer restarts which triggers my scan logic :