AH540/541 network variables
CNT-SVX05B-EN 111
nvoOADamper SNVT_lev_percent Analog The network variable output communicates outdoor
air damper status (0 to 100% open) of the device.
nvoOutdoorTemp SNVT_temp_p Analog This network variable output communicates the out-
door air temperature in degrees Celsius to other
devices. The valid range is from -40°C to 100°C with a
resolution of 0.01°C.
nvoSpaceCO2 SNVT_ppm Analog This network variable output communicates the space
CO2 concentrations in parts-per-million to other
devices. The valid range is from 0–2000 ppm with a
resolution of 1 ppm.
nvoSpaceRH SNVT_lev_percent Analog This network variable output communicates the space
temperature in degrees percent to other devices. The
valid range is from 0% to 100% with a resolution of
0.005%.
nvoSpaceTemp SNVT_temp_p Analog This network variable output communicates the space
relative humidity in degrees Celsius to other devices.
The valid range is from -15°C to 50°C with a resolution
of 0.01°C.
nvoUnitStatus SNVT_hvac_status (Structure) This network variable communicates unit status infor-
mation to other devices.
Table 80. Tracer AH540/541 DAC profile network variable inputs
Variable name SNVT Data type Description
nviDACISP SNVT_temp_p Binary Bind to this network variable input to communicate
the discharge air cooling setpoint in degrees Celsius
to the device. The valid range is from 0°C to 30°C with
a resolution of 0.01°C.
nviDAHtSP SNVT_temp_p Analog Bind to this network variable input to communicate
the discharge air heating setpoint in degrees Celsius
to the device. The valid range is from 10°C to 70°C
with a resolution of 0.01°C.
nviDuctStaticSP SNVT_press_p Analog Bind to this network variable input to communicate
the duct static pressure in Pascals to the device. The
valid range is from 0 Pa to 1250 Pa with a resolution
of 1 Pa.
nviDuctStatPress SNVT_press_p Analog Bind to this network variable input to communicate
the duct static pressure in Pascals to the device. The
valid range is from 0 Pa to 1250 Pa with a resolution
of 1 Pa.
nviEconEnable SNVT_switch Binary Bind to this network variable input to communicate
economizer operation enable or disable to the device.
nviEmergOverride SNVT_hvac_emerg Enumerated Bind to this network variable input to communicate
emergency overrides to the device.
nviApplicMode SNVT_hvac_mode Enumerated Bind to this network variable input to communicate
the application mode to the device.
Table 79. Tracer AH540/541 SCC profile network variable outputs (continued)
Variable name SNVT Data type Description
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