I have a Quantum PLC that is up and running. I am trying to make it so that when the PLC is powered on that ALL Digital Outputs are reset. My DO cards are part number 140 DDO 353 00.
I have called Tech Support and they say that there is no way to have all the DOs start at '0'. You'd think the card could be configured to do this.
I have tried moving the %S1 status bit to %S0 which forces a cold boot on powerup but any DOs that were on before the PLC was powered off will turn on for 1 scan before the coldboot resets them along with all the memory registers. Since these DOs are opening closing high voltage breakers I cannot have them turn on for 1 scan and then turn off right away.
Any suggestions?
I have called Tech Support and they say that there is no way to have all the DOs start at '0'. You'd think the card could be configured to do this.
I have tried moving the %S1 status bit to %S0 which forces a cold boot on powerup but any DOs that were on before the PLC was powered off will turn on for 1 scan before the coldboot resets them along with all the memory registers. Since these DOs are opening closing high voltage breakers I cannot have them turn on for 1 scan and then turn off right away.
Any suggestions?