Modbus
Register
Address
Information
R/W
Type
Size
Description
Notes
40106
Alarm, Fault and
Warning State
R
u8
1
Current device alarm, fault, warning status. The same
operation as the LED on the device.
The bit assignments are as follows:
l
Bit 0: AL1 active
l
Bit 1: AL2 active
l
Bit 4: Warning active
l
Bit 6: Fault Active
l
All others: For future expansion
40107
Device Monitoring
Status
R
u8
1
To check the device, not for sensor monitoring.
*Do not use this for alarm/fault check.
l
1: Normal
l
2: Warm up after power on
l
3: Inhibit
l
12: Calibration
40108
Heart Beat
R
u16
1
This Heartbeat is provided to facilitate detection of
communications problems in programming
environments where the transport layer communication
error information is unavailable. This increments
approximately every 5 seconds.
It is the responsibility of the system integrator to notify
plant personnel if a Modbus master fails to
communicate with the Incom. This register can facilitate
this notification.
40109 to
40110
Calibration Due
R
f32
2
This indicates the time remaining days before the ECC
sensor must be calibrated or replaced. Calibration
interval - DaysPassedSinceLastSuccessfulCal
40111
Measuring Unit
R
u8
1
l
0x00 : blank (no measurement unit)
l
0x01 : %LEL
l
0x02 : mA
l
0x03 : mg/m3
l
0x04 : g/m3
l
0x05 : %Vol
l
0x06 : ppm
l
0x07 : kppm
l
0x08 : LEL•m
l
0x09 : A
l
0x0A : dB
l
0x0B : dBA
l
0x0C : ppm•m
40112 to
40113
Peak Reading
R
f32
2
Gas reading peak value during sensor reading gas
conc.
Peak Reading
VESDA
VESDA Sensepoint XCL – Large Bore Installation Manual
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Summary of Contents for VESDA Sensepoint XCL
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