String tag communication in rapid scada

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  • #947
    rajesh
    Participant

    i want to give a command as a string,after sending command in string format it appears as hexadecimal format in description.
    on request sequence, command line is given as follows

    <?xml version="1.0" encoding="utf-8" ?> 
    - <DevTemplate>
    - <ElemGroups>
    - <ElemGroup name="Temperature" tableType="HoldingRegisters" address="99">
      <Elem name="process" type="ushort" byteOrder="" /> 
      </ElemGroup>
    - <ElemGroup name="realval" tableType="HoldingRegisters" address="109">
      <Elem name="temp" type="float" byteOrder="" /> 
      </ElemGroup>
    - <ElemGroup name="setpoint" tableType="HoldingRegisters" address="299">
      <Elem name="sp" type="ushort" byteOrder="" /> 
      </ElemGroup>
    - <ElemGroup name="stringval" tableType="HoldingRegisters" address="2079">
      <Elem name="name" type="ushort" byteOrder="" /> 
      </ElemGroup>
    

    what is the command did i configure to enter command in string format

    #948
    Mikhail
    Moderator

    If you are talking about Modbus protocol, command must be converted to the array of bytes. Using formulas of output channels you can send any array of bytes according to your needs.
    Do you use Modbus?

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