Modules
10ch DS18B20 temperature acquisition module RS485 modbus rtu communication1. Product Overview
10ch DS18B20 temperature acquisition module,which is communication through an RS485 interface.
1)Temperature sensor is DS18B20
2)Temperature acquisition range :-55~+125
3)Temperature input resolution:0.1
4)Effective connection distance> 100 meters
5) module adopts RS485 Modbus RTU standard communication
6) communication format of this module can be set by software
2. Main technical parameters
Item
Parameter
Communication output
1. Communication protocol: Modbus RTU
2. Interface type: RS485 communication, output interface has over-voltage and over-current dual protection design.
3. Baud rate: 4800bps 9600bps 19200bps 38400bps 57600bps 115200bps.
4. Check digit: no check
5.Stop bits:1bit
6. Setting method: module address, baud rate can be set by software
Module size
Dimensions: 115× 90×40mm
Working environment
Temperature: -20 - + 60
Working power
1. Power supply voltage: DC12V-24V wide range power supply, with power polarity protection
2. Power consumption: less than 1W
Module net weight
200g
3 interface definition
Terminal name
Explanation
VCC
Positive input of external power supply
GND
Negative terminal of external power input
V DS18B20 ->VCC
G DS18B20 ->GND
D1
DS18B20 Channel 1DATA
D2
DS18B20 Channel 2DATA
D3
DS18B20 Channel 3DATA
D4
DS18B20 Channel 4DATA
D5
DS18B20 Channel 5DATA
D6
DS18B20 Channel 6DATA
D7
DS18B20 Channel 7DATA
D8
DS18B20 Channel 8DATA
D9
DS18B20 Channel 9DATA
D10
DS18B20 Channel 10DATA
A RS485 signal A+
B RS485 signal B-
4Holding registers (function codes: 0x03H, 0x06H, 0x10H)
Address
Parameter
Length
Read/Write

40001
Device address
2 Read/Write
1 247
1(default)
40002
Baud rate
2 Read/Write
0 6 0:4800
1:9600(default)
2:14400
3:19200
4:38400
5:57600
6:115200
40003
Ds18b20verification
2 Read/Write
0 1 As quality of DS1B20 varies from good to bad,
read data verification can be started;
0:No started
1:started
41025
Channel 1
2 Read
0 Channel 1temperature
41026
Channel 2
2 Read
0 Channel 2 temperature
41027
Channel3
2 Read
0 Channel 3temperature
41028
Channel4
2 Read
0 Channel 4 temperature
41029
Channel 5
2 Read
0 Channel 5 temperature
41030
Channel 6
2 Read
0 Channel 6 temperature
41031
Channel 7
2 Read
0 Channel 7 temperature
41032
Channel 8
2 Read
0 Channel 8 temperature
41033
Channel 9
2 Read
0 Channel 9 temperature
41034
Channel 10
2 Read
0 Channel 10 temperature
NOTE: Temperature resolution is 0.1 ,If register = 311, temperature = 31.1 (311/10)
of communication parameters ( value): 9600,N,8,1
Read 10-channel temperature
5 Restore settings
Press restore button for more than 5 seconds, module will return to settings.
communication parameters: 9600, N, 8, 1
device address: 1
Do not start read validation
Package includes:
controller * 1