1stwave
Member
I am using RSView (HMI) and AB SLC5/05.
My scenario:
I have 2 HVAC systems, one is running and the other is used as a backup this is for our Server Room. Need to program this where only one unit can come on at a time. Also I have a wall sensor hooked up to the PLC to monitor temp. in this room. I would like to hook this up where if the temp. goes over 75 F the one unit shuts off and the other unit comes on. Any help on Ladder programming would be appreciated.
Thanks
My scenario:
I have 2 HVAC systems, one is running and the other is used as a backup this is for our Server Room. Need to program this where only one unit can come on at a time. Also I have a wall sensor hooked up to the PLC to monitor temp. in this room. I would like to hook this up where if the temp. goes over 75 F the one unit shuts off and the other unit comes on. Any help on Ladder programming would be appreciated.
Thanks
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