Recent content by DaraghC

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    Siemens S7-1211 connection to PC HMI

    Hi all, I have a S7-1211 PLC which I'm using to learn PLC programming. I can connect to the PLC from my PC and program it using TIA portal V18. When connected as below. But now I want to use PC HMI. If I connect to the PC Station as below. I can no longer go online to the PLC. Anything...
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    S7-1211C Compact PID no output

    Hi Shawn, Thanks for that, but unfortunately it still doesn't work. I've tried both whole time and one shot at the "ModeActivate" input. Daragh
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    S7-1211C Compact PID no output

    Hello all, I'm trying to run PID compact on a S7-1211C. The thing is, this worked before, and now there is no output. I'm new to PLC programming so I'm sure I've missed some basic setting, but I can't find anything different from the previous config. I've tried resetting through the reset...
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    Siemens implementation of PI control.

    First of all my apologies the link I posted is from my PC. Correct link below. https://support.industry.siemens.com/cs/document/108210036/simatic-s7-1200-s7-1500-pid-control?dti=0&lc=en-AR And the graphs are on page 33 equation's on page 34. It's not a misprint I copied that equation from a...
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    Siemens implementation of PI control.

    So I'm not missing something. The equation is wrong. Thing is, this is from a Siemens document on PID implementation on a S7 PLC. I think I'll write to Siemens. Feel a bit more confident now that both you and Pnachtwey agree it's wrong.
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    Siemens implementation of PI control.

    Hi everyone, I'm commissioning a dissolved oxygen system at a wastewater treatment works, and the PI controller is implemented by a Siemens S7 PLC. So I checked out S7 online and found a Siemens manual at the link below...
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