Honeywell Excel 10 W7752D - Page 57

EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
55 EN2B-0285GE51 R0909
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
engineering units:
English (metric) or states plus
range
digital
state
or
value
default comments
nvoAlarmStatus error_bit[2] UBYTE
Bit coded Alarm:
ALM_COMFAIL_MANHEAT
ALM_COMFAIL_MANCOOL
ALM_HW_SW_MISMATCH
1
2
4
See above.
nvoApplicMode SNVT_hvac_mode
HVAC_AUTO
HVAC_HEAT
HVAC_COOL
HVAC_OFF
0
1
3
6
HVAC_OFF
(at application restart)
This output variable is used to coordinate the slave devices with
the master controller. It reflects the current heat/cool medium
based upon the available supply energy. This is required for con-
figurations with heat/cool changeover. HVAC_OFF switches the
heat/cool control OFF while still providing frost protection and
reporting status and alarms.
nvoCoolOutput SNVT_lev_percent
0 to 100%
163.835% = INVALID
This output variable is the cooling output which is typically used for
monitoring or bound to a cooling actuator node or another con-
troller operating as slave. nvoCoolOutput will be transmitted
immediately when its value has changed significantly (>= 1%), and
periodically according to nciSndHrtBt. The output value represents
the output of the control algorithm but is limited to a range of 0% to
100%.
nvoDigitInState value SNVT_switch.value
0 to 100%
This output variable indicates the binary state of the controller's
digital input which can be configured to support a window contact,
an occupancy/movement sensor, an air flow contact, or a heat/cool
changeover contact. It can be bound to another Excel 10 controller
or a third party node.
nvoDigitInState state SNVT_switch.state
OFF
ON
NOT_ASSIGNED
0
1
255
See above.
nvoEffectOcc SNVT_occupancy
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
0
1
2
3
This output variable reflects the effective occupancy mode derived
from the time schedule, occupancy sensor, override button, and
network occupancy override.
nvoFanSpeed value SNVT_switch.value
0 to 100%
0 (at application restart) This output variable reports the fan speed for the controller. It can
be bound to another Excel 10 controller with a fan connected or to
a third-party fan node.
nvoFanSpeed state SNVT_switch.state
OFF
ON
0
1
NO_FAN
(at application restart)
See above.