40 E
3
Point Gas Monitor Technical Manual
Annex A - BACnet and Modbus Objects on E3Point Network
Modbus Registers Description
MODBUS
(RTU)
Number Description
21 Reading value
23 Divisor of reading value to obtain concentration
26 Sensor status
27 High temp warning status
34 The level at which Alarm A is triggered
35 Alarm A hysteresis offset (Alr A + Hyst A = level at which alarm is
deactivated)
36 The level at which Alarm B is triggered
37 Alarm B hysteresis offset (Alr B + Hyst B = level at which alarm is
deactivated)
38 The level at which Alarm C is triggered
39 Alarm C hysteresis offset (Alr C + Hyst C = level at which alarm is
deactivated)
61 Temperature High Level limit
66 Actual buzzer status (on or off)
70 Actual relay status (on or off)
The E
3
Point must not be written to as this could compromise the gas
detection function.
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