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#NameDescription
1Slave addressModbus RTU slave address of external equipment
2Register index

Modbus protocol register start addres in hexademal view, like 0046

3Function codeThe following functions are supported:
  • 0x01 - Read Coil Status
  • 0x02 - Read Input Status
  • 0x03 - Read Holding Registers
  • 0x04 - Read Input Registers
4Data type

Determines how to present the data:

  • 16 bits signed int
  • 16 bits unsigned int
  • 32 bits signed int
  • 32 bits unsigned int
  • 32 bits IEEE floating point
5Data ordering

Determines byte order in Modbus protocol response message:

  • low byte first, low word first
  • low byte first, high word first
  • high byte first, low word first
  • high byte first, high word first
6Polling periodDefines the time of polling the sensor value

The Test button allows you to make a test connection with a modbus device. In additional fields, the bytes sequence of connection data is displayed, in hexadecimal form. Modbus request - data of the sent request, without a checksum. Modbus raw answer - data of the received answer, without a checksum. Modbus value - contains the data value interpreted in accordance with the selected Data type.

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