Mô tả

Module RS-485 Modbus RTU 4 kênh đầu vào nhiệt độ DS18B20 Daisy-Chain ICP DAS M-2004 CR


  • 4-Port DS18B20 Sensor Input Module
  • 2/3-wire DS18B20 Wire Connection
  • Max. 20 Sensors per Port
  • Up to 100 meters per port with Daisy-Chain Wiring
  • Measures Temperatures from -55 to +125°C
  • ±0.5°C Accuracy from -10 to +85°C


The M-2004 is a digital temperature sensor module that provides four ports for 2- or 3 wire DS18B20 digital temperature sensor input. The DS18B20 temperature sensor has a high accuracy of ±0.5°C when measuring temperatures between -10 and + 85°C, with a total measurement range of between -55 and +125°C. Up to 20 DS18B20 sensors can be connected to each port on the M-2004 module in a daisy-chain arrangement with a maximum wiring distance of 100 meters. The M-2004 module is fully RoHS compliant, and features 4 kV ESD protection as well as 3000 VDC intra-module isolation.


  • Temperature Measurement
  • Environment Monitoring
  • Tunnel Monitoring
  • Building Monitoring


CPU Module
Watchdog Timer Module, Communication (Programmable)
Intra-module Isolation 3000 VDC
EMS Protection
EFT (IEC 61000-4-4) ±4 kV for Power Line
ESD (IEC 61000-4-2) ±4 kV Contact for each Terminal
±8 kV Air for Random Point
Surge (IEC 61000-4-5) ±2 kV for Power Line
LED Indicators
Status 1 x Power and Communication
Temperature Measurement
Range -55 °C to +125 °C
Analog Input
Ports 4
Sensor Type DS18B20
Sensors per Ports 20
Sensor Wiring Cables Length Max. 100 m per Port
Resolution 12-bit
Accuracy ±0.5 °C (See Note 1)
Sampling Rate 1 Hz
COM Ports
Ports 1 x RS-485
Baud Rate 1200 to 115200 bps
Data Format (N, 8, 1) (N, 8, 2) (E, 8, 1) (O, 8, 1)
Protocol Modbus RTU, DCON
Bias Resistor 1k Ω (DIP switch selectable)
Reverse Polarity Protection Yes
Input Range +10 ~ +48 VDC
Consumption 0.5 W
Dimensions (mm) 33 x 117 x 88 (W x L x H)
Installation DIN-Rail mounting
Operating Temperature -25 ~ +75 °C
Storage Temperature -30 ~ +80 °C
Humidity 10 ~ 95% RH, Non-condensing




Ordering Information

M-2004     CR  4-port DS18B20 Temperature Sensor Module using the DCON and Modbus Protocols (RoHS)
Đăng nhập
Đăng ký
Hotline: 0904251826