Chapter 10 Network variable bindings
116 CNT-SVP01C-EN
nvoPercent01 …
nvoPercent20
SNVT_lev_percent Analog These 20 network variable outputs communicate lev-
els in percent to other devices. The valid range is from
–163.84% to 163.83% with a resolution of 0.005%.
nvoPressure01 …
nvoPressure05
SNVT_press_p Analog These five network variable outputs communicate
pressures in Pascals to other devices. The valid range
is from –32,768 Pa to 32,766 Pa with a resolution of
1Pa.
nvoLinRes01 …
nvoLinRes05
SNVT_res_f Analog These five network variable outputs communicate a
resistance in ohms to other devices. The valid range
of this floating point value is from –1E38 Ω to 1E38 Ω.
nvoTemp01 …
nvoTemp40
SNVT_temp_p Analog These 40 network variable outputs communicate tem-
peratures in degrees Celsius to other devices. The
valid range is from –273.17°C to 327.66°C with a reso-
lution of 0.01°C.
nvoVolts01 …
nvoVolts05
SNVT_volt Analog These five network variable outputs communicate
voltages in volts to other devices. The valid range is
from –3,276.8 V to 3,276.8 V with a resolution of 0.1 V.
Table 12. Tracer MP580/581 DAC profile network variable outputs
Variable name SNVT Data type Description
nvoDischAirTemp SNVT_temp_p Analog This network variable output communicates the dis-
charge air temperature in degrees Celsius to other
devices. The valid range is from –273.17°C to 327.66°C
with a resolution of 0.01°C.
nvoUnitStatus* SNVT_hvac_status (Structure) This network variable output communicates unit status
information to other devices.
nvoEffDATempSP SNVT_temp_p Analog This network variable output communicates the effective
discharge air temperature setpoint in degrees Celsius to
other devices. The valid range is from –273.17°C to
327.66°C with a resolution of 0.01°C.
nvoDuctStatPress SNVT_press_p Analog This network variable output communicates duct static
pressure in Pascals to other devices. The valid range is
from –32,768 Pa to 32,766 Pa with a resolution of 1 Pa.
nvoEffDuctStatSP SNVT_press_p Analog This network variable output communicates the effective
duct static pressure setpoint in Pascals to other devices.
The valid range is from –32768 Pa to 32766 Pa with a res-
olution of 1 Pa.
nvoApplicMode SNVT_hvac_mode Enumerated This network variable output communicates the applica-
tion mode of the device.
nvoEffectOccup SNVT_occupancy Enumerated This network variable output communicates the effective
occupancy mode of the device. Avoid controlling this
from a program.
* The variable nvoUnitStatus contains structures. It cannot be viewed on the operator display.
Note: For more information on network variable outputs associated with the DAC profile, see the LonMark™ Functional Profile:
Discharge Air Controller. For more information on any standard network variable types (SNVTs), see SNVTs and SCPTs in the
Device Resource Files on the LonMark™ Web site at www.lonmark.org.
Table 11. Tracer MP580/581 generic network variable outputs (Continued)
Variable name SNVT Data type Description