Honeywell Sensepoint XRL Instruction Manual page 56

G
Appendix
Modbus Registers
The Modbus version of Sensepoint XRL allows interaction with the gas
detector using Modbus/RTU over an RS-485 physical layer. The
Modbus interface provides a means to monitor and interrogate the
detector with the addition of being able to reset alarms remotely. The
Modbus registers for Sensepoint XRL are given in the following table.
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