Viconics VT7607 Echelon Integration Guide - Manual (Page 9)

9
Output Network Variables (nvo’s) Description
All output network variables will be updated no faster than the Minimum Send Time (nciMinOutTm)
configuration value, if used.
An output network variable will be transmitted immediately when its value has changed significantly.
Additionally, this variable will also be transmitted as a heartbeat output on a regular basis as dictated by the
Maximum Send Time (nciSndHrtBt) configuration value.
Parameter Variable Name Function
Room
Temperature network output
SNVT_temp_p
nvoSpaceTemp This output network variable is used to monitor the effective
space temperature sensor that the Space Comfort Controller is
using for control. This output echoes the value of the input.
Valid Range: -40 to 122°F (-40 to 50°C)
The value 621.07°F (327.67°C or 0x7FFF) will be sent as an
invalid value in case of a sensor failure.
This output network variable is available to report the Space
Comfort Controller status. It combines the operating mode, the
capacity of heating and cooling used and an indication if any
alarms are present in the object.
Sub Name Valid Value
01 mode HVAC_HEAT
HVAC_MRNG_WRMUP – Not Used
HVAC_COOL
HVAC_NIGHT_PURGE – Not Used
HVAC_PRE_COOL – Not Used
HVAC_HVAC_OFF
HVAC_HVAC_TEST – Not Used
HVAC_HVAC_EMERG_HEAT – Not Used
HVAC_FAN_ONLY – Not Used
HVAC_MAX_HEAT – Not Used
02: heat_output_
primary
0-100%
03 heat_output_
secondary
Not Used
04 cool_output: 0-100%
05 econ_output Not Used
06 fan_output 0-100%
07 In_alarm 0 (No alarms)
1 (Alarm On)
Unit Status
network output
SNVT_hvac_status
nvoUnitStatus
0x7FF (Alarming disabled) – Not Used
Outdoor
Temperature network output
SNVT_temp_p
nvoOutdoorTemp This output network variable is used to monitor the outdoor air
temperature.
Valid Range: -40 to 122°F (-40 to 50°C)
The value 621.07°F (327.67°C or 0x7FFF) will be sent as an
invalid value in case of a sensor failure or if unconnected.