code: function _readFC6(data, next) {
      var dataAddress = data.readUInt16BE(2);
      var value = data.readUInt16BE(4);
  
      if (next)
          next(null, { "address": dataAddress, "value": value });
  }
docs: Parse the data for a Modbus -
  Preset Single Registers (FC=06)
  
  @param {Buffer} data the data buffer to parse.
  @param {Function} next the function to call next.