Using both Serial ports on PAC

Discussion in 'General Discussion' started by >>aSh<<, Nov 4, 2011.

  1. >>aSh<<

    >>aSh<<

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    Hi,

    Is there any reason why one of the ports on PAC unit fails to open/initialize while other is working properly. We have supplied external power supply 24V ac 1A. Any tips or tricks anyone?

    Thanks!
     
    >>aSh<<, Nov 4, 2011
    #1
  2. >>aSh<<

    >>aSh<<

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    OpenSerial(SerialPortIndex, COMPortNo, BaudRate, DataBits, StopBits, FlowControl, Parity);

    Also what is difference between SerialPortIndex and COMPortNO?

    should this be 1,1 for COM1

    ans 2,2 for COM2
     
    >>aSh<<, Nov 4, 2011
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  3. >>aSh<<

    Darren Senior Member

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    The difference is only relevant to logic running on a PC which could have many COM ports. On the PAC, just use 1,1 for COM 1 and 2,2 for COM 2 as you have suggested.
     
    Darren, Nov 5, 2011
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  4. >>aSh<<

    Darren Senior Member

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    A simple test is to connect the two PAC serial ports together and see if you can communicate from one to the other. They are actually tested in the factory this way.
     
    Darren, Nov 5, 2011
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  5. >>aSh<<

    >>aSh<<

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    Thanks Darren!
     
    >>aSh<<, Nov 6, 2011
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