Practicing PLC programming for work and I was tasked with creating a triplex pump system on Proworx. I have used a series of 2 TEST functions as the high and low "sensor alarms".(not sure the appropriate verbiage, very new) which works ok, I just cannot seem to link the pumps together at all in order for them to alternate 1,2,3 in sequence once they hit the "low sensor". I know proworx is ancient but any guidance would be appreciated. I am here to learn.