nic00

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Posts posted by nic00

  6. Posted

    In your PLC use the service request #7 for reading the date/time of the PLC. The service request write the date/time into 5 or 6 word. In your Cimplicity project, create points to read the date/time words. Create a periodic Event launching a script. In this script use the Date function to set the PC date/time. Thats what i found from google, dont know if its any help :)

  12. Posted

    Here is what the question was based on; A relay PLC switch has an inductance of 2H and resistance of 4Ohms. It has a current of 0.5A, when switched off Determine the time for the relay to drop out when the drop out current is 0.1A I get something like 804.72ms

  15. Posted · Edited by nic00

    Thanks for the info guys. A friend PM'd me this a few minutes ago too (just to throw it in) James says: if i remember correctly... and dont quote me on this... but isn't it to do with spikes on a current signal

  16. Posted

    i couldnt find anything on it either. Maths tutor has had to take over the PLC lesson due to illness and on an assignment it states about dropout current within a relay and he wondered what it was. Couldnt find anything about it in my Bolton PLC book, so i thought i would ask you guys here. Sorry if you dont understand

  17. Posted · Edited by nic00

    If a PLC has relay, that has a drop out current rated 30^-3. Does that means the relay will stay at its relevant state of play when power is switched off then when current drops below 30^-3 that states reverts back to 0? Sorry if this seems to be a bit of a novice question, wanting to make sure im on the right track

  22. Posted

    The water mixing works fine although im askin for advice and ways to solve some problems that im having. Not to get slated :) Im currently reading http://www.amazon.co.uk/Programmable-Logic...0024&sr=8-1 To help try and correct my code, before i start using sequences i need to understand how they work etc, Best way to learn is to learn from your mistakes :D

  25. Posted

    Coded the program today, used monitors to say when cycles where complete. Everything got tested and worked fine and came out with what i wanted. Thanks for the advice guys, I can post the code if anyone is interested (its not very efficient coding)