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  1. roro36

    PLC AC Voltage Detector

    Using an analogue input card with a plc, i want to know if you can sense the polarity of the AC mains? With a 240V phase to neutral voltage connected through a 15KOhm resitor, the current is limited to 16mA.Can the PLC then use this to determine when the Voltage value is in the positive/negative...
  2. roro36

    Delta DVPES32 Floating point help

    Ok, i'll start with what I can do: ADD K1 D500 D500 That line adds 1 to register d500 and stores it back in register d500 Its a 16bit machine and when it comes to multiplying numbers its just not big enough. So I want to use the floating point number and have it stored across 2 registers.So we...
  3. roro36

    Delta DVP32 PLC data logger

    I have the dvp32es2 delta plc tha has the analogue extension module. I am measuring the current that is being used by a machine. Is there a way to log the data? I mean, I could take a reading every few minutes and then store it in range of registers, but that seems quite ineffecient.
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