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Summary of Contents for Kaiterra Square
- Page 1 Kaiterra www.kaiterra.com Kaiterra Square Modbus User Manual MARCH 2022...
- Page 2 Ethernet network. The Kaiterra Square provides Modbus/RTU support via the RS-485 port on the device. Kaiterra Square can still upload data to the cloud via Wi-Fi or Ethernet when Modbus is used for local communication.
- Page 3 A. Set up Modbus via RS-485 Make sure your power cable is disconnected, and follow the steps in the Kaiterra Square Installation Guide, to insert the RS-485 communication cables into the pins and fasten the screws. Pin A is for Cable A in RS- 485, and Pin B is for Cable B in RS-485.
- Page 4 “Kaiterra”. Connect to that network. On the Kaiterra Enterprise Configuration Tool, you can enter a name for the device (e.g. the location of the device or the serial number) and a project tag. This will provide easy identification and filtering in the configuration history page later on to help you quickly connect the device to the Kaiterra dashboard.
- Page 5 Configuration Tool. AQI stands for Air Quality Index, an index calculated based on the concentration of a set of air pollutants. The Kaiterra Square offers AQI value in the Modbus communication so that you can integrate the information into your local system.
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Page 6: Communication Protocol - Modbus Rtu
Kaiterra www.kaiterra.com Communication Protocol - Modbus RTU Data type and format: Data length=8 Stop bit=1 Transmission rate=9600 Check: even Data format Address Function Data Error check Data length 16 digit CRC code (Cyclic Redundancy Check) Default Modbus address code is 0x01... -
Page 7: Register Address
Kaiterra www.kaiterra.com Register Address Address Content R/W Property Comments Input register 0 PM2.5 0-999 ug/m3 Input register 1 TVOC 0-60000 ppb Input register 2 Temperature -30.0-50.0℃ Input register 3 Humidity 0.0%-100% RH Input register 4 0-9999 ppm Input register 5... - Page 8 Kaiterra www.kaiterra.com Holding Register 0 Modbus address code Min 1, Max 247 * Other features could be customized upon requests. * Temperature is in absolute temperature T(k)=273.15+t(celsius) * Temperature and humidity have resolution of 0.1, the transmitted data is 10 times of the raw data.