Xtralis VESDA Sensepoint XCL, Installation Manual

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A.6 Modbus Registers
The Modbus version of VESDA Sensepoint XCL 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 VESDA Sensepoint XCL are given in the
following table.
Note: Functions associated with the relays (if fitted) is limited to the viewing of their associated parameters. It is not possible to set or control the relays over the Modbus
interface.
INCOM Register Map : Assuming that PLC base = 0
Modbus
Register
Address
Information R/W Type Size Description Notes
30001 Main SW Version of
Instrument R u16 1 The first two numbers of SW version.
For example, V2.16.1 -> 0x0210 -> 2 and 16 (last digit
is omitted) Upper Byte : Major version
Lower Byte : Minor version
30002 EEP Version of
Instrument R u8 1
30003 to
3009 Reserved R u16 14
30010 Modbus Slave ID R u8 1
30011 Device Monitoring
Status R u16 1 To check the device is monitoring the gas or not.
*Do not use this for alarm/fault check.
l
1: Normal
l
2: Warm up after power on
l
3: Inhibit
l
12: Calibration
30012 to
30013 Reserved R u16 2
30014 to
30015 Active Alarm R u32 2 Active Alarm details
l
Bit 0 Alarm 1 is active
l
Bit 1 Alarm 2 is active
l
Bit 2 Alarm 3 is active (not in use)
30016 to
30017 Latched Alarm R u32 2 Active latched alarm details
l
Bit 0 Alarm 1 is latched
l
Bit 1 Alarm 2 is latched
l
Bit 2 Alarm 3 is latched (not in use)
30018 to
30019 Active Fault R u32 2 Active fault details
l
Upper two bytes: fault
l
Lower two bytes: warning
l
Bit 0 to Bit 15: warning
l
Bit 16 to Bit 31: fault
VESDA VESDA Sensepoint XCL – Large Bore Installation Manual
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