Module RS-485 Modbus RTU 4 kênh đầu vào nhiệt độ DS18B20 với Daisy-Chain ICP DAS M-7004-G CR
The M-7004 is a digital temperature sensor module that provides four ports for 2- or 3 wire DS8B20 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-7004 module in a daisy-chain arrangement with a maximum wiring distance of 100 meters. The M-7004 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 |
Yes, Module (1.6 Seconds), Communication (Programmable) |
Isolation |
Intra-module Isolation |
3000 VDC |
EMS Protection |
EFT (IEC 61000-4-4) |
±4 kV for Power |
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 liner |
LED Indicators |
Status |
1 x Power and Communication |
Temperature Measurement |
Range |
-55 °C ~ +125 °C |
Analog Input |
Channels |
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 |
Individual Channel Configuration |
– |
COM Ports |
Ports |
1 x RS-485 |
Baud Rate |
1200 to 115200 bps |
Data Format |
N81, N82, E81, O81 |
Protocol |
DCON Modbus/RTU |
Power |
Reverse Polarity Protection |
Yes |
Input Range |
+10 ~ +48 VDC |
Consumption |
0.5 W |
Mechanical |
Dimensions (mm) |
123 x 72 x 35 (W x L x H) |
Installation |
DIN-Rail |
Environment |
Operating Temperature |
-25 ~ +75 °C |
Storage Temperature |
-30 ~ +80 °C |
Humidity |
10 ~ 90% RH, Non-condensing |
Specification Memo
Note 1: ±0.5°C Accuracy from -10°C to +85°C