Section Communication Ⅵ The instrument is provided with standard RS485 series communication interface, in accordance with international universal standard MODBUS-RTU communication protocol, supporting No.03 register reading and holding command. MODBUS standard format (No.03 register reading and holding command) Command format: Function Register Number of CRC Definition Address code address data check Data ADDR 0x03 M N CRC 16 Number 1 1 2 2 2 of bytes Return format: Function Address Data size Data CRC check code Data ADDR 0x03 2*N Data CRC 16 Number 1 1 1 2*N 2 of bytes Register address description: Date Function Access Address Data type Description size code authority Conductivity unsigned value (unit: 0x0000 4 bytes 0x03 Read only long us/cm, to be divided by 100)
Section Ⅵ Communication The instrument is provided with standard RS485 series communication interface, in accordance with international universal standard MODBUS-RTU communication protocol, supporting No.03 register reading and holding command. MODBUS standard format (No.03 register reading and holding command) Command format: Definition Address Function code Register address Number of data CRC check Data ADDR 0x03 M N CRC 16 Number of bytes 1 1 2 2 2 Return format: Address Function code Data size Data CRC check Data ADDR 0x03 2*N Data CRC 16 Number of bytes 1 1 1 2*N 2 Register address description: Address Data type Date size Function code Description Access authority 0x0000 unsigned long 4 bytes 0x03 Conductivity value (unit: us/cm, to be divided by 100) Read only
2017110920430731789.docx