Brand Name:icchipcn.com
Condition:New
Type:Logic ICs
Supply Voltage:DC12 or DC24V
Product introduction：This product uses Swiss imported digital sensors, with reliable performance, high accuracy, small annual drift, and fast response speed. Suitable for temperature and humidity measurement in communication room, office, workshop, warehouse, hospital, HVAC, building self-control and other environments. The instrument is wall-mounted or ceiling-mounted, with a plug-in structure, which is convenient for wiring.?
Product parameters：Measuring range: temperature: -20 ℃ ~ + 80 ℃; humidity: 0-100% RHResolution: temperature: 0.1 ℃; humidity: 0.1% RHAccuracy temperature: ± 0.5 ℃, humidity: ± 3% RHDrift / year | Temperature: 0.1 ℃, Humidity: 1%Power supply voltage: DC12 or DC24V, current <50mAWorking environment | temperature -20 ~ 70 ℃; humidity 5 ~ 95% condensationDimensions: length * width * height: 84mm * 100mm * 23mm;Installation: wall-mounted installationOptional featuresRS485 communication |: MODBUS-RTU protocol, the address is set by software, and the baud rate is fixed at 9600bpsAnalog signal output: 2-channel output 4-20mA, 0-5V, 0-10V optional
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V. Communication protocol
The sensor uses the MODBUS-RTU protocol, the default address is 1, the baud rate is 9600bps, 1 start bit, 8 data bits, 1 stop bit, no parity.
Communication address range: 1-255, baud rate range: 1200, 2400, 4800, 9600, 19200 BPS. Communication address and baud rate can be set by our software.
Host reads temperature and humidity data：
Address code | Function code | Register start address | Register length | CRC check |
0x01 | 0x03 | 0x00 0x00 | 0x00 0x02 | 0xC4 0x0B |
Temperature and humidity return data：
Address code | Function code | Number of valid bytes | Temperature value | Humidity value | CRC check |
0x01 | 0x03 | 0x04 | 0x01 0x56 | 0x03 0x0E | 0x9A 0xEB |
Temperature calculation: 0X0156 (hexadecimal) = 342 = 34.2 ° C. When the temperature is lower than 0 ° C, the data is expressed in two's complement, 0XFF64 (hexadecimal) = -156 = -15.6 ° C.
Humidity calculation: 0X030E (hexadecimal) = 782 = 78.2%.
?Factory parametersThe address range is: 1~254; configurableBaud rate: 2400, 4800, 9600, 19200, 38400, 115200, configurableCheck: No parity (0X00)Data bits: 8 bits, not configurableStart bit: 1 bit, not configurableStop bit: 1 bit (0X00), 1.5 bit (0X30), 2 bit (0X20), configurable?
RS485 factory parameter default：
Address | Baud rate | Parity check | Data bit | Start bit | Stop bit |
1 | 9600 | None | 8 bit | 1 bit | 1 bit |
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03H Read the temperature and humidity
data comparison table:
Register
address | PLC
or configuration address | Content description | Read and write attributes and commands | Data scope and description |
0 | 40001 | Temperature | 03H read | Unit℃, actual value = original value/10 |
1 | 40002 | Humidity | 03H read | Unit
%RH, actual value=original value/10 |
06H Set the communication address and
baud rate parameters. Comparison table:
Register
address | PLC
or configuration address | Content description | Read and write attributes and command | Data scope and description |
0000 | 40001 | Communication
address | Byte | Communication
address 1~255 |
Communication
rate | Byte | Module
communication baud rate 03H~07H,mean 1200～19200BPS |
