elsner elektronik 70152, Технические характеристики и инструкции по установке

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SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.
7
Modbus transmission protocol
Applicable protocol: Modbus RTU
SO 250-UI Modbus inquiry string from master
Byte
no.
Variable Explanation
0 Slave address xx
1 Command 04H Read Input Registers
2 Start Address High Byte xx
3 Start Address Low Byte xx
4 Word Count High Byte xx
5 Word Count Low Byte xx
6 CRC High Byte xx
7 CRC Low Byte xx
SO250-UI Modbus output string to master
Byte
no.
Start
Address
Variable Explanation
0 Slave address xx
1 Command 04H Read Input Registers
2 Byte Count xx Master requirement * 2
3 0 Measurement value H
4 1 Measurement value L 0 … 100%
5 2 Relay 1 H
6 3 Relay 1 L 1 = On, 2 = Off
7 4 Relay 2 H
8 5 Relay 2 L 1 = On, 2 = Off
9 6 Error H
10 7 Error L 0 = Measurement value ok, 1 = Error
11 CRC H
12 CRC L