ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER 42 www.DaikinApplied.com
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Table 19: Network Variable Outputs (NVOs) - SmartSource Single and Two Stage Compressor and Enfinity Large Two
Compressor, Continued
Point Name
l
on
W
orks
Variable
(NV Index
2
)
SNVT Type
(SNVT Index)
Range/
Default
(in Units)
Heart-
beat
Description
Network Variable Outputs (NVOs)
Unit Status Output
nvoUnitStatus
(27)
SNVT_hvac_status
(112)
Send
Indicates the unit status. It combines the operating mode,
the capacity of heating and cooling, and any alarms that
are present in the object. The in_alarm status indicates the
highest priority current alarm identifier.
Unit Status Fields
• mode: (see supported modes below)
• heat_output_primary: 0 to 100%
• heat_output_secondary: 0 to 100%
• cool_output: 0 to 100%
• econ_output: 0 to 100%
• fan_output: 0 to 100%
•
in_alarm: (see alarm identifiers below)
Supported Modes
1 = HVAC_HEAT (Heating Mode)
3 = HVAC_COOL (Cooling Mode)
6 = HVAC_OFF (Inactive Control)
9 = HVAC_FAN_ONLY (Fan Only Mode)
14 = HVAC_DEHUMID (Dehumidification Mode)
SmartSource (Series2) Alarm Identifiers
0 = No Alarms
1 = IO Exp Communication Fail
2 = Invalid Configuration
3 = Low Voltage Brownout
4 = Comp High Pressure
5 = Comp Low Pressure
6 = Comp Suctn Temp Snsr Fail
7 = Comp Low Suction Temp
8 = Freeze Fault Detect
9 = Room Temp Sensor Fail
10 = Entering Water Temp Snsr Fail
11 = Leaving Water Temp Snsr Fail
12 = Condensate Overflow
13 = Low Entering Water Temp
14 = Serial EEPROM Corrupted
15 = Wtrside Econ Low Temp Cutout
Enfinity Large Two Compressor (SS2C) Alarm Identifiers
0 = No Alarms
1 = IO Exp Communication Fail
2 = Invalid Configuration
3 = Low Voltage Brownout
4 = Comp #1 High Pressure
5 = Comp #2 High Pressure
6 = Comp #1 Low Pressure
7 = Comp #2 Low Pressure
8 = Comp #1 Suctn Temp Snsr Fail
9 = Comp #2 Suctn Temp Snsr Fail
10 = Comp #1 Low Suction Temp
11 = Comp #2 Low Suction Temp
12 = Freeze Fault Detect
13 = Room Temp Sensor Fail
14 = Entering Water Temp Snsr Fail
15 = Leaving Water Temp Snsr Fail
16 = Condensate Overflow
17 = Low Entering Water Temp
18 = Serial EEPROM Corrupted
19 = Wtrside Econ Low Temp Cutout
1. Analog Null (0x7FFF) is a discrete temperature value of 621.806ºF/327.67ºC. Its purpose is to indicate a sensor failure condition or when the unit controller is not
using that temperature value.
2. The Network Variable index number is a unique identifier for certain
L
on
W
orks
variables. Some BAS companies use this numeric value instead of text to
reference these variables. The NV index number can also be found in the XIF file.
3. After Receive Heartbeat is enabled, this variable reverts to the default (non-override) value if it is not refreshed often enough through a network command or if
communication is disabled (i.e. the device is disabled or is offline).
4. The totalizer continues to increment until the maximum count is reached, at which point the BAS must reset the value by issuing a write command. The variable is
saved in nonvolatile memory every 24 hours. If power is lost, that day’s totalizer information is not stored.
