Creates a serial or TCP Modbus master instance. You must manually select the polymorphic instance to use.

You can use the Modbus master instance to perform read and write operations on Modbus slaves. The default read and write operation timeout is 5,000 ms. You can use the Property Node or the Set Timeouts VI to change the timeout.

Use the pull-down menu to select an instance of this VI.


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Examples

Refer to the following VIs for examples of using the Create Master Instance VI:

  • labview\examples\Data Communication\Modbus\ModbusLibrary\Modbus Library.lvproj
  • labview\examples\Data Communication\Modbus\Redundant Modbus Masters\Redundant Modbus Masters.lvproj