Writes values to contiguous coils. The maximum number of coils this VI can write is 1,968.


icon

Inputs/Outputs

  • cModbus_Masterlvclass.png Modbus master in —

    Modbus master in specifies the reference to the Modbus master instance. Use the Create Master Instance VI to create a Modbus master instance.

  • cu16.png starting address —

    starting address specifies the initial address for the write operation. Valid values are between 0 and 65,535, where 65,535 is the maximum number.

    The address that this VI writes is 0-based, meaning that the address numbering convention for the Modbus slave starts at 0.

  • c1dbool.png coil values —

    coil values specifies the coil values you want to write. The number of coils you specify must be between 1 and 1,968, where 1,968 is the maximum number. After you specify a value for coil values, check the value you specify for starting address. Ensure that you do not use this VI to write the value of a coil whose address is larger than 65,535.

    Otherwise, LabVIEW returns error code -389113.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • iModbus_Masterlvclass.png Modbus master out —

    Modbus master out returns a duplicate of Modbus master in.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.

    • Examples

    Refer to the Modbus Library.lvproj in the labview\examples\Data Communication\Modbus\ModbusLibrary directory for an example of using the Write Multiple Coils VI.