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Support Questions / Reading and writing to %MW holding register

« on: September 21, 2020, 05:52:49 PM »

I am using OpenPLC and a UniPi 1.1 and have a program that controls a vacuum sealer working. I set up an HMI screen in AdvancedHMI and have all the button and pilot lights working. In OpenPLC I am using 3 INT variables (vtime=%MW0, stime1=%MW1 and stime2=%MW2)  and using INT to Time converters to change the INT value to time for the timer. In AdvancedHMI I have setup 3 digital meters to read/write the %MW values from/to the PLC. So far reading the value (40001, 40002, 40003) seems to work (It shows for the initial value set in the PLC program but using the keypad and change the value to say 8 does not seem to be changing the time in the timer. Any suggestions or ideas would be greatly appreciated. I am a electrician doing this for a friend who doesn't have the $8000 to replace the machine.