The NT18B07 communicates via function codes 03 (Read) and 06 (Write). The default communication settings are 9600 baud rate, 8 data bits, 1 stop bit, and no parity Key Register Addresses: 0x0000 to 0x0006: Channels 1 through 7 temperature readings. 0x0008 to 0x000E: Temperature correction/offset values for each channel.
This post serves as your comprehensive guide to the NT18B07, covering everything from technical specs to Modbus RTU commands. 1. Technical Specifications at a Glance nt18b07 manual
Temperature data is returned as a 16-bit integer. To get the actual temperature in Celsius, convert the returned hexadecimal value to decimal and divide by 10 If the register returns (219 decimal), the temperature is 21.9 raised to the composed with power C Negative Values: The NT18B07 communicates via function codes 03 (Read)
Connect your DC power (6–24V) and the RS485 A/B lines. It is highly recommended to use shielded twisted-pair cables for RS485 to minimize interference in industrial settings. Sensor Connection: This post serves as your comprehensive guide to
B3950 10K 1% NTC Temperature Sensor (Note: Sensors are often sold separately). Measuring Range: -20°C to +125°C with ~1% accuracy. Communication: RS485 using the standard Modbus RTU Unit Size: Ultra-compact at 60 x 37 x 14 mm. 2. Wiring and Installation
Wire each NTC sensor to its respective channel terminals. Ensure all connections are secure; incomplete wiring can lead to short circuits or inaccurate readings. 3. Programming with Modbus RTU