Xtralis VESDA Sensepoint XCL Installation Manual page 45

VESDA Sensepoint XCL – Large Bore Installation Manual
Modbus Information
Register
Address
30020 to Latched Fault
30021
30022 to Location Tag
30034
30035 to Gas reading (by status) R
30036
Holding Registers
40101 System ID Code
40102 System ID Code
40103 to Gas Reading
40104
40105 Fault and Warning ID
39
R/W Type Size
R u32 2 Value is fixed to 0x00
R string [26] 13
f32 2 Gas reading value calculated by device status (i.g
negative value in fault status )
1. If device is in Inhibit state, return value is base
concentrate of sensor data (In case of ECC,
Noramlly 0)
2. If device is in fault state, return value is : return =
f32_gas_full_scale / 16 * (fault current value of
configuration - 4.0);
3. If device is in warning state, return value is : return
= f32_gas_full_scale / 16 * (warning current value
of configuration - 4.0);
R u16 1 MSB always 0x26 to facilitate automatic identification
LSB repeat of Modbus address.
R u16 1 Identical to 40101.
R f32 2 The reported gas concentration in current
measurement units. For example, methane at 50% LEL
would be reported as 50.0 here.
This concentration is forced to last reading before
switching into inhibit mode during inhibit mode.
R u8 1 This is the integer representation of the fault status. If
any fault exists this will take a value in the range 1200
to 1999. Otherwise, if any warning exists, this will take
a value in the range 1 to 999. Normally, this has the
value zero.
Description
Not used (always non-latched)
Location tag for BLE scanning
same as '40133 to 40134'
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Notes
UpperByte: Type Code: 0x26
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LowerByte: My address
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Upper Byte : Type Code : 0x26
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Lower Byte : My Address
Fault = 1200 + Number
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Warning = Number as is
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