Honeywell Excel 10 W7752D - Page 64

EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
EN2B-0285GE51 R0909 62
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
nviSpaceTemp is bound to another node, nvoSpaceTemp is not
reported on the network.
nvoStatus object_id UWORD
NODE_OBJECT
FCU_OBJECT
0
1
This output variable belongs to the Node Object and reports the
status for any object on a node. This is the answer to the
nviRequest.
nvoStatus invalid_id Bit
VALID_ID
INVALID_ID
0
1
This output variable indicates whether nviRequest uses a fault
object ID.
nvoStatus invalid_request Bit
VALID_REQUEST
INVALID_REQUEST
0
1
This output variable indicates whether nviRequest uses a fault
request.
nvoStatus disabled Bit
ENABLED
DISABLED
0
1
This output variable indicates whether the device is enabled or
disabled (nviManualMode = DISABLE).
nvoStatus comm_failure Bit
COMMUNICATION_OK
COMMUNICATION_FAILURE
0
1
This output variable indicates whether an update nviRcvHrtBt is
missing.
nvoStatus in_alarm Bit
NO_ALARM
IN_ALARM
0
1
This output variable indicates whether an alarm occured. See
nvoAlarm.
nvoStatus report_mask Bit
NO_REPORT_MASK
REPORT_MASK
0
1
This output variable shows the answer to nviRequest >
REPORT_MASK
nvoTerminalLoad SNVT_lev_percent
-163..163%
163.835% = INVALID
This output variable shows the terminal load, which is a percentage
between -160% and +160% based upon the control output level.
Negative values indicate heating load and positive values indicate
cooling load. 100% is the full terminal capacity. An absolute
terminal load value of more than 100% indicate that the terminal is
not able to supply the required heating or cooling energy which at
the zone controller should cause a demand for more supply
energy. nvoHeatOutput will be transmitted immediately when its
value has changed significantly (>= 1%).
nvoUnitStatus mode SNVT_hvac_mode
HVAC_HEAT
HVAC_COOL
HVAC_OFF
1
3
6
This output variable reports the last operating mode of the control
algorithm. It is not set to HVAC_OFF if the Heating and Cooling
Output shows 0%. HVAC_OFF is set when the Device is disabled
from nviRequest, nviManualMode or nviApplicMode.