ProCon
— TB550 Series
®
Turbidity Sensor
7. Read Instruction Parsing
The communication protocol adopts MODBUS (RTU) protocol. The communication content and address can be changed
according to the customer's needs.
The default configuration is network address 01, port rate 9600, no check, a stop bit. Users can set the change;
Function code 04 instruction for example:
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Temperature value =14.8ºC, Turbidity value=17.0NTU;
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Host sent: FF 04 00 00 00 08 XX XX
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Slave reply: FF 04 10 00 00 00 00 3E 8A 41 6D F9 6B 41 87 9C 00 44 5E XX XX
Explanation:
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[FF] Represents the sensor address address
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[04] Represents function code 04
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[10] Represents have 16 bytes of data
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[3E 8A 41 6D]=14.8; | Temp. value; parsing order:41 6D 3E 8A
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[09 18 41 88]=17.0; | Turbidity value; parsing order:41 88 09 18
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[XX XX] Represents the CRC 16 check code.
8. Restore Factory Calibration
If the digital turbidity sensor calibration is wrong during the calibration process, select "06" function code, enter "200"
in "Address" , "60" in "Value" , click "Send". A pop-up display "Response OK" appears.
24-0321 © Icon Process Controls Ltd.
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