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SM6901B Us er Ma nual
SM6901B
temperature, humidity, illuminance, carbon dioxide, smoke,
methane, hydrogen sulfide, carbon monoxide eight-in-one
hundred-leaf box sensor
User Manual
File Version: V21.3.24
SM6901B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and
other instruments or systems for monitoring temperature,humidity,Illuminance,carbon
dioxide,conductivity,methane,conductivity,carbon monoxide state quantities.The internal use of
best Industrial Co., Ltd
Page1
Sha nghai Son
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Related Manuals for SONBEST SM6901B
Summary of Contents for SONBEST SM6901B
- Page 1 User Manual File Version: V21.3.24 SM6901B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and other instruments or systems for monitoring temperature,humidity,Illuminance,carbon dioxide,conductivity,methane,conductivity,carbon monoxide state quantities.The internal use of best Industrial Co., Ltd...
- Page 2 SM6901B Us er Ma nual 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. Technical Parameters Technical parameter Parameter value Brand SONBEST Temperature measuring range -30℃~80℃...
- Page 3 SM6901B Us er Ma nual Yellow RS485 A+ Blue RS485 B- In the case of broken wires, wire the wires as shown in the figure. If the product itself has no leads, the core color is for reference. Communication Protocol The product uses RS485 MODBUS-RTU standard protocol format, all operation or reply commands are hexadecimal data.
- Page 4 SM6901B Us er Ma nual Device ID Function id Start Address Data Length CRC16 00 64 00 02 90 5F FA is 250 for the general address. When you don't know the address, you can use 250 to get the real device address, 00 64 is the device model register.
- Page 5 SM6901B Us er Ma nual be queried accordingly. Modified. 5 Read Correction Value (1) Read Correction Value When there is an error between the data and the reference standard, we can reduce the display error by adjusting the correction value. The correction difference can be modified to be plus or min us 1000, that is, the value range is 0-1000 or 64535 -65535.
- Page 6 SM6901B Us er Ma nual best Industrial Co., Ltd Page6 Sha nghai Son...
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