The following story personifies this little green circuit board as it navigates its duties in a demanding industrial setting. The Vigil of Node 01
The NT18B07 breaks out its power, serial bus, and sensor interfaces across dedicated terminal blocks. Proper wiring prevents signal reflections, ground loops, and hardware failure. 1. Power Supply and RS485 Communication Terminals
| Parameter | Value | | :--- | :--- | | Screen Size | 18.5 inches diagonal (16:9 aspect ratio) | | Resolution | 1366 x 768 (HD Ready) | | Brightness | 200 cd/m² | | Contrast Ratio | 500:1 (static) | | Response Time | 8ms (typical) | | Viewing Angle | 90° horizontal / 65° vertical | | Power Consumption | ≤ 30W (operating), <1W (standby) | | Input Voltage | AC 100-240V ~ 50/60Hz | | Weight | 5.5 lbs (2.5 kg) |
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Connect the from your power supply to the V+ terminal of the module. nt18b07 manual
The is a specialized 7-channel NTC temperature transmitter that converts signals from up to seven 10K NTC thermistors into the widely used MODBUS RTU protocol over an RS485 serial interface. Essentially, it allows you to digitize temperature readings from multiple analog sensors, making them accessible to Programmable Logic Controllers (PLCs), industrial paperless recorders, single-board computers like the Raspberry Pi, or microcontrollers such as the ESP32.
Prevents users from accidentally setting the target temperature too high. Lowest Lower Limit
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The module features 7 channels (CH1-CH7) for NTC thermistors. Note that the NTC sensors usually have two wires; connect one to the channel terminal and the other to the shared NTC GND. The following story personifies this little green circuit
The board features 7 pairs of input pins designated for NTC connections. Connect one to each desired channel. NTC thermistors are non-polarized components; you can wire either lead to either terminal in a given pair.
Cooling mode (turns on when hot). H: Heating mode (turns on when cold). P1 Hysteresis (Backlash) 0.1°C – 15°C
: The physical board features a 1% resistance measurement accuracy. The mathematical chip profile supports a theoretical calculation framework spanning -273°C to +200°C. Hardware Wiring and Terminal Pinouts
B3950 10K 1% NTC thermistors (up to 7 sensors simultaneously). Temperature Range: -20°C to +125°C. Accuracy: ±1% when using recommended sensors. Communication Protocol (Modbus RTU) Default Baud Rate: 9600 bps. Data Format: No parity (N), 8 data bits, 1 stop bit. Supported Function Codes: 03 (Read) and 06 (Write). Register Mapping: The is a specialized 7-channel NTC temperature transmitter
Connect the directly back to the 12V Negative (-) of the power supply. High-Voltage AC Control (e.g., 110V/220V AC Heater)
The official documentation is maintained within the IOControl library as part of the Sming Framework, and is available at https://smingdev.readthedocs.io/en/latest/_inc/Sming/Libraries/IOControl/docs/nt18b07/ .
All temperature readings and parameters are mapped to 16-bit holding registers.