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  1. birdly

    9 pin computer serial port

    Thank you very much martyman, your answer did the trick!
  2. birdly

    9 pin computer serial port

    I have a burford ttp-1 printer connected to a laptop computer on a nine pin serial port and sometimes it connects to the printer and sometimes it will not. The software program goes thru all the baud rates and parity and data bits and stop bits and com1 and com2. How can I test the port on the...
  3. birdly

    J-4 junper on a allen bradley cpu card?

    Thank you very much danielmurray, the site you sent me to helped me very much with other problems.
  4. birdly

    a b 503 output timing changes?

    I found the problems and thanks to your help I was able to fix them. Thank you all very much.
  5. birdly

    A B 503 will not sync. 1 inverter to another and keep time

    I found the problems, 6 problems in all. Thank you all very much for your help!
  6. birdly

    a b 503 output timing changes?

    The batteries are new, and so are the cpu cards and the eproms.
  7. birdly

    a b 503 output timing changes?

    The programs have been running on 2 machines for 4 years or more.They normally run fine. But recently they have started acting up in different ways. The programs are the same for both machines. I just installed surge protectors on them but they still change their settings on their own.
  8. birdly

    a b 503 output timing changes?

    I have an a b 503 plc that has different recipies to do very much the same tasks but at different speeds. The problem is that when you change from one recipe to another the timing of a divice will change. Need all the help I can get on this....PLEASE!
  9. birdly

    Dos 3.3 setup or bios disk?

    Does anyone have an old bios disk or have any idea how to get into setup on an old dos 3.3 laptop?
  10. birdly

    J-4 junper on a allen bradley cpu card?

    What does the J-4 jumper on an allen bradley 503 cpu card do? It has 2 posistions 1 for peogram and 1 for protect.
  11. birdly

    A B 503 will not sync. 1 inverter to another and keep time

    Thanks djs, this is one of two identical machines running the same program and the other mach. runs fine.
  12. birdly

    A B 503 will not sync. 1 inverter to another and keep time

    I have an Allen Bradley 503 plc and it has an input from 1 inverter controlled motor (mechanically driven encoder) and another inverter controlled motor that has a mechanically operated switch for an input to the plc. It should compare the two inputs and sync. the two inverters together with the...
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