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Plctalk.net news digest

  • 9 months

    [Logix] Lead/lag pumps with PID control and auto/manual speed setpoints

    Hi guys,
    I'm working on controlling two pumps with a single PID loop. I've been doing searches in the forum and with Google so I have the general idea down, but wanted to ask about a few "best practices" sort of things that aren't quite be answered by Google...

  • 9 months

    Retrieval system

    Hello, I'm new but have been privately teaching myself programming. I have a setup on my workbench of a plc and hmi and switches and relays.
    I'm not advanced but I have grasped the basics and can make it do what I want. (not got into analog signals yet, but that is next)...

  • 9 months

    Logo! help on task

    Hi i have recently been studying PLC for work and i have had a task now which i believe i am close to finishing but i cannot think how to correct my problem. Any help would be much appreciated.
    I need to run the mixing tank for 10 seconds and then empty the tank after but i can only manage to get them both to come on at the same time but i need the empty tank to come on after the 10 seconds. I cant see where i am going wrong as i have tried...

  • 9 months

    How can I make this a "press once" and cycle once thing?

    Right now, I have to hold down the input for the code to run. It also will run constantly over and over again, but I just want it to run once.

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