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SM1882B Us er Ma nual
SM1882B
RS485 interface rail installed atmospheric pressure sensor
User Manual
File Version: V21.3.24
SM1882B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and
other instruments or systems for monitoring atmospheric pressure state quantities.The internal use of
high-precision sensing core and related devices to ensure high r eliability 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
best Industrial Co., Ltd
Page1
Sha nghai Son
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Summary of Contents for SONBEST SM1882B
- Page 1 User Manual File Version: V21.3.24 SM1882B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and other instruments or systems for monitoring atmospheric pressure state quantities.The internal use of high-precision sensing core and related devices to ensure high r eliability 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 SM1882B Us er Ma nual Brand SONBEST Atmospheric pressure range 30~110kpa ±0.5% Atmospheric pressure accuracy Communication Interface RS485 Default baud rate 9600 8 n 1 Power DC9~24V 1A Running temperature -40~80° C Working humidity 5%RH~90%RH Product Size Wiring instructions Any incorrect wiring can cause irreversible damage to the product.
- Page 3 SM1882B Us er Ma nual 00 00 00 01 84 0A For the correct query frame, the device will respond with data:01 03 02 00 79 79 A6 , the response format is parsed as follows: 数据 1 Device ID...
- Page 4 SM1882B Us er Ma nual needs to change the query command of the software at the same time. 4 Read and Modify Baud Rate (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.
- Page 5 SM1882B Us er Ma nual For example, the current state quantity is too small, we want to add 1 to its true value, and the current value plus 100 correction operation command is:01 06 00 6B 00 64 F9 FD .
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