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Jamie123

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Posts posted by Jamie123

  1. Hello,
    I have been ask to add some audio instruction to one of my machines. I created an audio file using text to speech software.
    When the audio plays through the PLC it does so at 4X(guess) the normal speed. I tried both MP3  and WAV and tested the file on my PC and phone before hand.

    Has anyone experienced this before? Any fixes?

    Thanks,
    Jamie

  2. I found this thread to be relevant to a program I am currently writing.

    Programming PLC's is a tiny element of my job and I only do around 2 per year, hence why I am not particularly good at it!

    On my current program I have tried to use the state machine method  - for the first time. Each state has its own sub routine(5 in total), the main program only calls the sub routine required based on the indexer. So each PLC scan consists of the main routine and one subroutine. The program has thrown out some weird behaviour (timers not resetting, coils remaining energized, cycle 1 works cycle 2 doesn't ) leading me to believe that running one sub routine at a time is not the correct way of implementing the state machine method.

    I then read this:

    Quote

    I want to impress on you that EVERY line of code should be executed on every scan (and executed only once).

    Is the correct way therefore to call all subroutines in the main program and use the index coil to activate each rung of the subroutine you want to execute?

  3. Hello,

    I have almost successfully established Modbus communication with a servo drive. I say almost, I cant read the register but I cant write to them. I want to change the speed via a button on the HMI. I get a -11 on the stats tag which is timed out.

    Could someone please have a look at the ladder for sending the modus write. Have I missed something?

     

    lad1.jpg

  4. Hi Saragani,

    I have the latest version which is 1.23.25

    A member of our IT team has had it running. It still wont open without requiring and admin login.

    As I work in a highly secretive industry, admin rights are very strictly controlled. They wont give one to a lowly engineer like me.

     

    Jamie

     

  5. Hello,

    I have been asked if its possible to establish communication with an on site PLC (v1210) and a Panasonic drive. Currently in order to change the drive parameters someone has to connect with a PC to make the changes and this has become a bit of a pain. All I need to do is read and write to two parameters on the drive.

    I had assumed that the drive had a comms protocol specific to Panasonic and therefore would be unable to establish a connection.

    I would be very grateful if someone could have a quick look at the comms chapter of the attached manual and let me know if its possible to establish comms with the PLC.

    Thanks in advance

    panasonic(vert xis).pdf

  6. Hello,

    I have two machines in operation that use Samba's. Both machines are identical. I have been having continued reports that the buttons on one of the machines fails to register on a regular basis, there have been no issues with the other machine.

    The screen has two large buttons on it. Every time I have been call out to fix this, the buttons work fine for me, the technician says the problem is intermittent and they have had no issues with the other machine.

    Is there a way to alter the screen sensitivity? How robust are these screens?

     

    Thanks in advance

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