modbus_protocal 1.0.2

Modbus is a data communications protocol originally published in 1979 for use with PLCs.

modbus_protocal

Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs).

Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices.

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Usage:

void testModbusProtocol() {
  final bytes = [1, 2, 3, 4, 5, 6, 7, 0xff, 0xa1, 0xdd];
  final modbus = ModbusProtocol(bytes);
  final crc = modbus.crc;
  // got:[175, 61]
  print(crc.word);
}

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Reference:

MODBUS Protocol Specification

C language Modbus CRC16

Wiki Modbus