: The module uses the Modbus RTU protocol for communication.
Used to calibrate sensors if they deviate from actual temperature. Auto-Report Toggle 0 (Disable) Set to 1-255 for automatic reporting intervals in seconds. Used to read or write the device's Modbus address. Example Commands Read CH1 Temperature : Send the hex string 01 03 00 00 00 01 84 0A Response interpretation : If the returned data is 01 03 02 01 2C B8 09 (hex) = 300 (decimal), which means Change Slave ID : Use function code (Write Single Register) to update register Change Baud Rate
The board features exactly seven independent analog input channels natively designed for negative temperature coefficient (NTC) sensors.
Before operating the NT18B07, always prioritize safety to prevent accidental discharge or injury: nt18b07 manual
Connect the A+ and B- lines to your RS485-to-USB adapter or PLC interface.
common, depending on board revision). It is recommended to use for accurate readings. 2.3. RS485 Network A+: Connect to the ) terminal of the RS485 master/converter. B-: Connect to the ) terminal of the RS485 master/converter. 3. Modbus RTU Protocol Configuration
To clear all custom data and restore factory defaults, press and hold the (+) and (-) buttons simultaneously for roughly 3 to 5 seconds until the display flashes or resets. : The module uses the Modbus RTU protocol for communication
Keep a greenhouse at 20°C. Turn on a heater if the temperature drops to 18°C, and turn it off once it reaches 20°C. Target Temperature: Set to 20.0 . P0 (Mode): Set to H (Heating).
: 9600 Baud Rate, No Parity (N), 8 Data Bits, 1 Stop Bit ( 9600, N, 8, 1 ).
NT18B07 7-channel NTC temperature interface board * Registers 0-6 contain temperature readings in 0.1 degree celcius increments. * Read the Docs NT18B07 7-channel NTC temperature interface board - Sming Used to read or write the device's Modbus address
Auto-Report Control (0 = Query mode; 1-255 = Send interval in seconds) 0x0000 (Query mode) 0x00FE Modbus Slave Station ID (Valid range: 1 to 247) 0x0001 (Slave ID 1) 0x00FF Baud Rate Select Register ( 0 =4800, 1 =9600, 2 =19200 bps) 0x0001 (9600 bps) Practical Modbus Communication Examples
The NT18B07 acts as a Modbus slave device. To extract data, your main controller (Modbus master) must send read requests (Function code 0x03 ).
Toggles between sequential and contact (bump) firing. Loading Nails
Comprehensive Guide to the NT18B07: Setup, Maintenance, and Troubleshooting