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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
53 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
nvoActiveSetPt SNVT_temp_p
50 to 95°F (10 to 35°C)
621.806°F (327.67°C) =
INVALID
This output variable shows the active setpoint of the control
algorithm. It is based upon the occupancy setpoints, the offset, and
recovery ramping.
nvoAlarm subnet UBYTE
0 to 255
This output variable is the LonWorks subnet number (in domain
entry 1 of the node’s domain table).
nvoAlarm node UBYTE
0 to 255
This output variable is the LonWorks node number (in domain
entry 1 of the node’s domain table).
nvoAlarm
(continued)
nvoAlarm
type UBYTE
ALM_NO_ALARM
ALM_NODE_OFF
ALM_FROST
ALM_INVALID_SETPNT
ALM_TEMP_SENSOR_FAIL
ALM_SETPNT_KNOB_FAIL
ALM_FAN_SPEED_SW_FAIL
ALM_FAN_FAILURE
ALM_COMFAIL_SPACETEMP
ALM_COMFAIL_HVACMODE
ALM_COMFAIL_SETPTOFFS
ALM_COMFAIL_SCHEDOCC
ALM_COMFAIL_DLC
ALM_COMFAIL_TEMPRESET
ALM_COMFAIL_ODTEMP
ALM_COMFAIL_OCCSENSOR
ALM_COMFAIL_WINDOW
ALM_COMFAIL_MANHEAT
ALM_COMFAIL_MANCOOL
ALM_HW_SW_MISMATCH
RETURN_TO_NORMAL
RTN_NODE_OFF
RTN_FROST
RTN_INVALID_SETPNT
RTN_TEMP_SENSOR_FAIL
RTN_SETPNT_KNOB_FAIL
RTN_FAN_SPEED_SW_FAIL
RTN_FAN_FAILURE
RTN_COMFAIL_SPACETEMP
RTN_COMFAIL_HVACMODE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
128
129
130
131
132
133
134
135
136
137
RETURN_TO_NORMAL
(at application restart)
This output variable reports the latest changed error condition
detected in the node. The first 5 bits are used for the alarm type
number, and this number is added to RETURN_TO_NORMAL
(128) when the error condition is no longer true. Each error
condition/return-to-normal is issued only once. The type is also
recorded in nvoAlarmLog and nvoFcuStatus.alarm_type.
Alarm reporting is suppressed by settin nviManualMode to
SUPPRESS_ALARMS, in which case nvoAlarm.type is set to
ALARM_NOTIFY_DISABLED. Alarm reporting is turned ON again
by setting nviManualMode to UNSUPPRESS_ALARMS, after
which all existing alarms (or ALM_NO_ALARM) are reported one
at a time.