67
VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
Modbus, BACnet, LonTalk interoperability
Table 67-1:
GTS humidifier LX series interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number*
BACnet
Object
Type and
Instance
LonTalk variable
names**
Description
Units Range
I-P units SI units I-P units SI units
Read-only analog variables
Space_RH RO
IR-1
30001
AI-01 nvoSpaceRH
Relative humidity content
of the air in the space
being humidified.
% % 0 to 100 0 to 100
Space_dew_point RO
IR-2
30002
AI-02 nvoSpaceDewPoint
Dew point of the air
in the space being
humidified.
ºF ºC 20 to 80 -6 to 26
Duct_RH RO
IR-3
30003
AI-03 nvoDuctRH
Relative humidity content of
air in the duct.
% % 0 to 100 0 to 100
Steam_demand_mass RO
IR-4
30004
AI-04 nvoSteamDmndMass
Steam demand in pounds
or kilograms per hour.
lbs/hr kg/h
0 to
100,000
0 to
100,000
Steam_demand_percent RO
IR-5
30005
AI-05 nvoSteamDemandP
Steam demand as
a percentage of the
humidifier’s total capacity.
% % 0 to 100 0 to 100
Aux_temp RO
IR-6
30006
AI-06 nvoAuxTemp
Temperature of auxiliary
temperature sensor.
ºF ºC -20 to 160 -29 to 170
Water_temp RO
IR-7
30007
AI-07 nvoTankTemp
Temperature of the
water in the humidifier’s
evaporating chamber.
ºF ºC
-240 to
265
-151 to 129
Steam_output_mass RO
IR-8
30008
AV-1 nvoSteamOutMass
Estimated amount of
steam the humidifier is
producing in pounds or
kilograms per hour.
lbs/hr kg/h
0 to
100,000
0 to
100,000
Steam_output_percent RO
IR-9
30009
AV-2 nvoSteamOutputP
Estimated amount of
steam the humidifier
is producing as a
percentage of the
humidifier’s total
capacity.
% & 0 to 100 0 to 100
Water_until_ADS RO
IR-10
30010
AV-3 nvoWaterUntilADS
Pounds or kilograms
of water remaining to
be converted to steam
before the next automatic
drain sequence (ADS)
cycle.
100
lbs
100
kg
0 to
2,200,000
0 to
1,000,000
Water_until_service RO
IR-11
30011
AV-4 nvoWaterTilSrvc
Pounds or kilograms of
water remaining to be
converted to steam before
next service cycle.
100
lbs
100
kg
0 to
2,200,000
0 to
1,000,000
* See Note 1 on Page 73.
** See Note 2 on Page 73.
Continued
OPERATION
Note: The interoperability partner will see the full list with points that apply to
other models. The following is a subset of that list and includes only the points
that are applicable to the GTS humidifier LX series.