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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
74-2958—172
StatusDI3 nvoIO ubDigitalIn
Byte Offset = 25
Bit Offset =
5(DigitalIn3)
FALSE
TRUE
0
1
FALSE DigitalIn3 is a byte with a bit for every physical digital input. If the input is
shorted to ground, the bit is a zero or FALSE. If the input is open, the bit is
one or TRUE.
StatusDI4 nvoIO ubDigitalIn
Byte Offset = 25
Bit Offset =
4(DigitalIn4)
FALSE
TRUE
0
1
FALSE DigitalIn4 is a byte with a bit for every physical digital input. If the input is
shorted to ground, the bit is a zero or FALSE. If the input is open, the bit is
one or TRUE.
Model nvoIO ubDigitalIn
Byte Offset = 25
Bit Offset = 3
(ExtenedModelIn)
FALSE
TRUE
0
1
FALSE X ExtenedModelIn is a byte with a bit for every physical digital input. If the
input is shorted to ground, the bit is a zero or FALSE. If the input is open,
the bit is one or TRUE.
OvrdSw nvoIO OverRide FALSE
TRUE
0
1
FALSE OverRide indicates the status of the wall module override pushbutton. It is 1
(TRUE) if the button is pressed, and is 0 (FALSE) if it isn't pressed.
OccSensr nvoIO OccupancySensor FALSE
TRUE
0
1
FALSE M,
S
OccupancySensor is the state of the digital input configured and wired to
the local occupancy sensor. 1 means that occupancy is being sensed (input
circuit shorted) and 0 means that no occupancy is being sensed (input
circuit open).
TimeClkSw nvoIO OccTimeClock FALSE
TRUE
0
1
FALSE M,
S
OccTimeClock is the state of the digital input configured and wired to a time
clock. 1 (input shorted) means that the scheduled occupancy is
OC_OCCUPIED, and 0 (input open circuited) means that the scheduled
occupancy is OC_UNOCCUPIED.
StatusAirFlow nvoIO ProofAirFlow FALSE
TRUE
0
1
FALSE ProofAirFlow is the state of the digital input configured and wired to the
proof of air flow switch. 1 (input shorted) means that air flow is detected and
0 (input open circuited) means that air flow is not detected.
EconEnSw nvoIO EconEnableIn FALSE
TRUE
0
1
FALSE M,
S
EconEnableIn is the state of the digital input configured and wired to the
outdoor air sensor that determines the suitably of outdoor air for free
cooling. 1 (input shorted) means that the outdoor air is suitable for cooling,
and 0 (input open) means that the outdoor air in not suitable for cooling.
IaqOvrSw nvoIO IaqOverRide FALSE
TRUE
0
1
FALSE M,
S
IaqOverRide is the state of the digital input configured and wired to the
indoor air quality sensor. 1 (input shorted) means that the indoor air quality
is poor, and 0 (input open) means that the indoor air quality is acceptable.
This input is used to cause the economizer to open to a predetermined
position when poor indoor air quality is detected.
SmokeMonSw nvoIO SmokeMonitor FALSE
TRUE
0
1
FALSE M,
S
SmokeMonitor is the state of the digital input configured and wired to the
indoor smoke sensor. 1 (input shorted) means that smoke is detected, and
0 (input open) means that no smoke is detected.
DrtyFilterSw nvoIO DirtyFilter FALSE
TRUE
0
1
FALSE M,
S
DirtyFilter is the state of the digital input configured and wired to the dirty
filter sensor. 1 (input shorted) means that filter is dirty, and 0 (input open)
means that the filter is not dirty.
ShutDownSw nvoIO ShutDown FALSE
TRUE
0
1
FALSE ShutDown is the state of the digital input configured and wired to the shut
down switch. 1 (input shorted) means that equipment should be shut down,
and 0 (input open) means that the equipment should be running.
Table 20. Input/Output Points. (Continued)
User Address NvName Field Name
Engineering Units: English
(Metric) or States plus Range
Digital State or
Value of State
Default
E-Vision (M, P, S)
Share
Map
Direct Access
Hardware Config.
Manual Config.
Test
E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic
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