AirLink 7032 Gas Monitor Operator’s Manual
Appendix C: RS-485 Modbus Output
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Appendix C: RS-485 Modbus Output
Modbus Terms
Modbus: RTU
Setting: Baud Rate = 9600
Data Bits: 8
Parity: None
Stop Bits: 1
Time Out: 1000 ms
Device Address: 1-247
Data Type: Holding Registers
Start Address: The first register the user would like to view (must be between 1-255)
Length: Depends on the number of addresses the user would like to view
Scan Rate:1000 ms
Data Format: Hex, Decimal, Float
Register Map
The Modbus register maps for 32 and 64-channel versions (applicable to RS-232, RS-485, and
USB outputs) of the AirLink 7010 are accessible from the following URLs:
• 32-channel version:
https://www.rkiinstruments.com/pdf/airlink_7032-32-regmap.pdf
• 64-channel version:
https://www.rkiinstruments.com/pdf/airlink_7032-64-regmap.pdf
