News: 2CH RS485 Modbus -55 To +125C Temperature Collector DS18B20 Sensor Adapter Board HMI PLC Analog Input Remote IO Module N4DSB03
N4DSB03 is a 2-channel Modbus temperature collector with 3.94MM terminal version. A single module can connect 2 DS18B20 sensors, each RS485 bus can connect 32 modules at the same time, and can measure up to 64 temperature points at the same time.
Description :
Working voltage: Power Supply DC 6-25V;
Working current: 7-8MA
Number of acquisition channels: 2 channels
MODBUS RTU protocol, 03, 04 read commands, 06, 16 write commands.
Serial port baud rate: 9600 (default), 1200-115200,N, 8, 1
By modifying the RS485 address, up to 247 modules can be cascaded (more than 16 please use R485 repeater)
Adapted sensor: DS18B20 Temperature Sensor
Temperature measurement range: -55°C to +125°C(-67°F to +257°F)
Size: 32.6 X 25.8 X 3.5MM(No terminal),32.6 X 25.8 X 12MMWith terminal)
Weight: 3.6g(No terminal) ,7.6g(With terminal)
The recommended lead length for DS18B20 is within 15 meters.
The recommended RS485 bus length is within 100 meters.
If communication fails, please short the RES jumper for 5 seconds to restore the factory settings.
Pin description:
VCC: Positive power supply
VCC: Negative power supply
A+: RS485 A+ port
B- : RS485 B- port
GND: CH1 DS18B20 negative power supply
D1: CH1 DS18B20 DATA
GND: CH1 DS18B20 positive power supply
GND: CH2 DS18B20 negative power supply
D2 : CH2 DS18B20 DATA
GND: CH2 DS18B20 positive power supply
