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SD2191B Us er Ma nual
SD2191B
RS485 with display 20W wide range illumination and temperature
and humidity integrated sensor
User Manual
File Version: V21.2.25
SD2191B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and
other instruments or systems for monitoring Illuminance,temperature,humidity state quantities.The internal
use of high-precision sensing core and related devices to ensure high reliability and excellent long-term
stability,can be customized RS232,RS485,CAN,4-20mA,DC0~5V\10V,ZIGBEE,Lora,WIFI,GPRS and
other output methods.
best Industrial Co., Ltd
Page1
Sha nghai Son
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Summary of Contents for SONBEST SD2191B
- Page 1 User Manual File Version: V21.2.25 SD2191B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and other instruments or systems for monitoring Illuminance,temperature,humidity state quantities.The internal use of high-precision sensing core and related devices to ensure high reliability and excellent long-term stability,can be customized RS232,RS485,CAN,4-20mA,DC0~5V\10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.
- Page 2 SD2191B Us er Ma nual Technical Parameters Technical parameter Parameter value Illuminance measuring range 0~20 0000Lux ±7% Illuminance allow deviation ±5% Repeatability test Illuminance detection chip Import digital Wavelength range 380nm~730nm Temperature measuring range -30℃~80℃ ±0.5℃ @25℃ Temperature measuring accuracy...
- Page 3 SD2191B Us er Ma nual converted to a decimal value of 121. If the data magnification is 100, the actual value is 121/100=1.21. Others and so on. For illuminance, since each parameter occupies 2 bytes and the actual resolution of the 200,000-range illuminance is less than 10, we express 200,000 at 20,000 or 20,000, ie The magnification is 10.
- Page 4 SD2191B Us er Ma nual (1) Read baud rate The device default factory baud rate is 9600. If you need to change it, you can change it according to the following table and the corresponding communication protocol. For example, read the curre nt device's baud rate ID, the command is:01 03 00 67 00 01 35 D5 , its format is parsed as follows.
- Page 5 SD2191B Us er Ma nual Device ID Function id Start Address Destination CRC16 00 6B 00 64 F9 FD After the operation is successful, the device will return information: 01 06 00 6B 00 64 F9 FD, the parameters take effect immediately after successful change.
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