Viconics VT7200 (Echelon) Integration Manual - Manual (Page 10)

10
Parameter Variable
Name Function
This input network variable is used to command the Space
Comfort Controller into different occupancy modes. It is typically
set by a supervisory node to remotely control the occupancy
modes to override the local occupancy routines of the thermostat.
Default Null Value: OC_NUL = 0xFF
Valid Range:
0 = OC_OCCUPIED *
1 = OC_UNOCCUPIED )
2 = OC_BYPASS – Not Used
3 = OC_STANDY – Not Used
Occupancy
Command network input
SNVT_occupancy
nviOccManCmd
0xFF = OC_NUL (Release to internal occupancy)**
* OC_OCCUPIED and OC_UNOCCUPIED commands will
always have full authority over the local occupancy routines
of the thermostat may they be a local input or a PIR cover.
** OC_NUL command will release the thermostat to use its
own internal occupancy routine driven from one of the digital
input or a PIR cover installed on board.
This network variable input is used to coordinate the Space
Comfort Controller with any node that may need to control the
heat/cool changeover of the unit.
This input is used in conjunction with nviHeatCool and SeqOper.
Default Null Value: HVAC_AUTO.
This network variable is subject to the receive heartbeat time,
nciRcvHrtBt
Valid Range:
0 = HVAC_AUTO
1 = HVAC_HEAT
2 = HVAC_MRNG_WRMUP – Not Used
3 = HVAC_COOL
4 = HVAC_NIGHT_PURGE – Not Used
5 = HVAC_PRE_COOL – Not Used
6 = HVAC_OFF
7 = HVAC_TEST – Not Used
8 = HVAC_EMERG_HEAT – Not Used
9 = HVAC_FAN_ONLY – Not Used
12 = HVAC_MAX_HEAT – Not Used
13 = HVAC_ECONOMY – Not Used
14 = HVAC_DEHUMID – Not Used)
15 = HVAC_CALIBRATE – Not Used)
System Mode network input
SNVT_hvac_mode
nviApplicMode
0xFF = HVAC_NUL – Not Used