Commercial Self Contained (CSC)

Property Type Description

Alarm Event Class [1-3]

Numeric

This is a three element array containing entries for alarm classes Informational, Auto Reset, & Manual Reset diagnostics. Each entry contains an index into the event action table. The event action table contains both a set of instructions for alarm routing, and a stretchy list of referencer objects (the potential receivers).

Alarm Output

Binary

This property indicates the state of the alarm relay output on the CSC UCM. When on, indicates the UCM is in a diagnostic / alarm condition.
0=OFF, 1=ON

Communication Address

Numeric

This property provides access to the assigned communications address value of the UCM being represented.

Communication Bad Message Count

Numeric

This is a property for keeping track of the number of message errors which occur when attempting to communicate with the UCM hardware.

Communication Channel

Numeric

This property provides access to the assigned communications channel value of the UCM being represented.

Communication Error Count

Numeric

This is a property for keeping track of the number of communications errors that occur when attempting to communicate with the UCM hardware.

Communication Format

Multi-State

This property indicates the communication format being used by the CSC unit. 0=UNDEFINED, 1=CSC PRE-CSRO COMM FORMAT, 2=CSC CSRO COMM FORMAT, 3=CSC CSRP COMM FORMAT

Communication No Answer Count

Numeric

This is a property for keeping track of the number of unanswered communications with the UCM hardware.

Communication Retry

Binary

Provides access to the communications retry indicator. This property is used to signal the control server that it needs to force control data output to the device when it is awakened for maintenance operations. The communications retry indicator is set (TRUE) when an attempt to send control data fails, and cleared (FALSE) when communications are successful.

Communication State

Binary

This property indicates the status of communications between the BCU and the UCM.  0=Down, 1=Up.

Comp Number Enabled: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used to enable a specific number of compressors on the CSC unit. 0=0, 1=1, 2=2, 3=3, 4=4 COMPRESSORS ENABLED

Comp: Number Enabled

Numeric

This property indicates the value to be used by the "Comp Number Enabled: Tracer" property to enable a specific number of compressors on the CSC unit. If the "Mech Cooling Control: Ref" property is set to DISABLE, the value "0" will be shown for this property. 0=0, 1=1, 2=2, 3=3, 4=4 COMPRESSORS ENABLED

Comp: Number Of

Numeric

This property indicates the actual number of compressors on the CSC based on DIP switch settings at the unit (pre-set at the factory). 2=2 CPRSRS, 3=3 CPRSRS, 4=4 CPRSRS

Compressor A Output

Binary

This property indicates the state of the Compressor A output relay. 0=OFF, 1=ON

Compressor A Run Time

Numeric

This property indicates the number of hours compressor A has run. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours

Compressor A Starts

Numeric

This property indicates the number of starts compressor A has had. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts

Compressor B Output

Binary

This property indicates the state of the Compressor B output relay. 0=OFF, 1=ON

Compressor B Run Time

Numeric

This property indicates the number of hours compressor B has run. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours

Compressor B Starts

Numeric

This property indicates the number of starts compressor B has had. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts

Compressor C Output

Binary

This property indicates the state of the Compressor C output relay. 0=OFF, 1=ON

Compressor C Run Time

Numeric

This property indicates the number of hours compressor C has run. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours

Compressor C Starts

Numeric

This property indicates the number of starts compressor C has had. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts

Compressor D Output

Binary

This property indicates the state of the Compressor D output relay. 0=OFF, 1=ON

Compressor D Run Time

Numeric

This property indicates the number of hours compressor D has run. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours

Compressor D Starts

Numeric

This property indicates the number of starts compressor D has had. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts

Condenser Water Flow Status

Binary

This property indicates the status of the condenser water flow switch on the UCM. When water flow is present, the compressors can be operated. Compressors will not operate until this property shows FLOW. This property is only valid on water-cooled CSC units. 0=NO FLOW, 1=FLOW

Condenser Water Pump Output

Binary

This property indicates the active status of this output on the UCM. When ON, the CSC is requesting water flow which in turn causes the necessary customer-supplied condenser water supply equipment to be active to support unit cooling operations. 0=OFF, 1=ON

Condenser Water Temp: Entering

Numeric

This property indicates the temperature of the water entering the condenser. This property is only valid for water-cooled CSC units. Range: 0 to 235° F

Condenser Water Temp: Leaving

Numeric

This property indicates the temperature of the water leaving the condenser. This input is used for condensing temperature control. This property is only valid for CSC units configured with head pressure control. Range: 0 to 190° F

Config: Air Volume Control

Binary

This property indicates the active configuration of VAV CSC units. This property is only valid for VAV CSC units. 0=INVERTER, 1=IGV

Config: Communications

Binary

This property indicates whether the BCU and the CSC are communicating. This property is typically in the ENABLE state and is not normally used for day-to-day operation. 0=DISABLE, 1=ENABLE

Config: Condenser Type

Binary

This property indicates the condenser type associated with the CSC unit. 0=WATER-COOLED, 1=AIR-COOLED

Config: CV Duct Pres Diag Enable

Binary

This property is used to enable the ‘Diag: SA Hi Press - Manual’ diagnostic. This property is used only on CV CSCs. 0=DISABLE, 1=ENABLE.

Config: External Setpoint

Binary

This property indicates whether the external setpoint option is installed on the CSC unit. ENABLE means the CSC will use the local hard-wired setpoint when the CSC is in the LOCAL mode. DISABLE means there is no local hard-wired setpoint. This CSC property is typically used with a non-Trane BAS. This property is only available if the "Config: Reset Option" property is set to ENABLE. 0=DISABLE, 1=ENABLE

Config: Head Pressure Control

Binary

This property indicates whether the condensing head pressure control option is installed on the CSC unit. 0=DISABLE, 1=ENABLE.

Config: Heat

Binary

This property indicates whether the night heat and morning warmup and/or the CV heat/cool autochangeover options are installed.
0=NOT INSTALLED, 1=INSTALLED

Config: Reset Option

Binary

This property indicates whether the "Config: External Setpoint" and "Config: Zone Based Reset" properties are enabled or disabled. ENABLE means that these properties are available DISABLED means that these properties are not available. 0=DISABLE, 1=ENABLE

Config: VAV Duct Press Control

Binary

Enabling this control loop allows duct pressure control via configured ‘Config: Air Volume Control’ device, and enables ‘Diag: SA Hi Press - Manual’ diagnostic. This property is used only on VAV CSCs.
0=DISABLE, 1=ENABLE.

Config: Water Valve Control

Binary

This property indicates whether the unit is configured with the standard water valve option or the energy saving water valve option. This property is only valid on units configured with water-side economizers.
0=ENERGY SAVING, 1=STANDARD

Config: Zone Based Reset

Binary

This property indicates whether the setpoint reset option is installed on the CSC unit. ENABLE means that the UCM is allowed to provide setpoint reset functionality. This property is only available if the "Config: Reset Option" property is set to ENABLE. 0=DISABLE, 1=ENABLE

Configuration: Economizer

Multi-State

This property indicates the type of economizer (if any) being used by the CSC unit. 0=NO ECONOMIZER, 1=WATERSIDE ECONOMIZER, 2=AIRSIDE ECONOMIZER

Configuration: System Control

Binary

This property indicates how the CSC will operate in the system. CV means the CSC unit will perform zone temperature control and VAV means the unit will perform discharge air temperature control. 0=CV, 1=VAV

Control Event Class

Numeric

This property determines where control messages are routed to when the object’s present value is controlled.

Diag: Automatic Reset

Binary

This property indicates a diagnostic that takes part or all of the CSC unit off-line. Resetting of this diagnostic will automatically occur when the condition causing the diagnostic clears. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT1 Evap Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the evaporator suction temperature sensor on circuit 1 reads either lower than 0° F or greater than 115° F. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT1 High Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 1 discharge pressure is greater than 360 PSI, or the UCM detects loss of the input signal. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT1 Low Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 1 low pressure cutout input indicates failed, at which time compressors on this circuit are disabled. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT2 Evap Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the evaporator suction temperature sensor on circuit 2 reads either lower than 0° F or greater than 115° F. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT2 High Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 2 discharge pressure is greater than 360 PSI, or the UCM detects loss of the input signal. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT2 Low Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 2 low pressure cutout input indicates failed, at which time compressors on this circuit are disabled. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT3 Evap Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the evaporator suction temperature sensor on circuit 3 reads either lower than 0° F or greater than 115° F. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT3 High Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 3 discharge pressure is greater than 360 PSI, or the UCM detects loss of the input signal. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT3 Low Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 3 low pressure cutout input indicates failed, at which time compressors on this circuit are disabled. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT4 Evap Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the evaporator suction temperature sensor on circuit 4 reads either lower than 0° F or greater than 115° F. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT4 High Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 4 discharge pressure is greater than 360 PSI, or the UCM detects loss of the input signal. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: CKT4 Low Pressure

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the circuit 4 low pressure cutout input indicates failed, at which time compressors on this circuit are disabled. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comm Fail - CSR

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when a communication and setpoint reset module failure occurs with the UCM unit switch in the Auto Remote position. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp A Contactor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 8% current when the compressor A output is de-energized. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp A High Motor Temp

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the compressor A motor winding temperature sensor reads greater than 221° F. (On early units this diagnostic also occurs when the refrigerant discharge temperature sensor reads greater than 302° F.) This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp A Overload Trip

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 132% compressor A motor current for greater than 102 seconds, greater than LRA for greater than 1.6 seconds, or phase loss. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp B Contactor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 8% current when the compressor B output is de-energized. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp B High Motor Temp

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the compressor B motor winding temperature sensor reads greater than 221° F. (On early units this diagnostic also occurs when the refrigerant discharge temperature sensor reads greater than 302° F.) This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp B Overload Trip

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 132% compressor B motor current for greater than 102 seconds, greater than LRA for greater than 1.6 seconds, or phase loss. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp C Contactor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 8% current when the compressor C output is de-energized. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp C High Motor Temp

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the compressor C motor winding temperature sensor reads greater than 221° F. (On early units this diagnostic also occurs when the refrigerant discharge temperature sensor reads greater than 302° F.) This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp C Overload Trip

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 132% compressor C motor current for greater than 102 seconds, greater than LRA for greater than 1.6 seconds, or phase loss. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp D Contactor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 8% current when the compressor D output is de-energized. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp D High Motor Temp

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the compressor D motor winding temperature sensor reads greater than 221° F. (On early units this diagnostic also occurs when the refrigerant discharge temperature sensor reads greater than 302° F.) This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Comp D Overload Trip

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects greater than 132% compressor D motor current for greater than 102 seconds, greater than LRA for greater than 1.6 seconds, or phase loss. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Cond Ent Water Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present, on units configured with water-cooled condensers, when the entering condenser water temperature input reads either lower than 14° F or greater than 123° F. This is an auto reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Cond Lvg Water Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the leaving condenser water temperature input reads either lower than 14° F or greater than 123° F. This is an auto reset diagnostic. This property is valid only for units configured with head pressure control. 0=NOT ACTIVE, 1=ACTIVE

Diag: Condenser Water Low Temp

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the entering condenser water temperature input reads lower than 34° F for units configured with condensing pressure control, or lower than 53° F for units configured without condensing pressure control. This diagnostic will automatically reset, and is considered an informational only diagnostic. This property is valid only for water-cooled CSC units. 0=NOT ACTIVE, 1=ACTIVE

Diag: Controller Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects an internal failure. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Dirty Filter

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the UCM has detected that a dirty filter condition exists. This diagnostic will automatically reset, and is considered an informational only diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Econ Ent Water Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the entering economizer water temperature input reads either lower than 14° F or greater than 123° F. This is an auto reset diagnostic. This property is valid only for CSC units configured with a water-side economizer. 0=NOT ACTIVE, 1=ACTIVE

Diag: Heat Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects a failure in the optional electric heating unit. This is a manual reset diagnostic. This property is valid only for CSC units configured with electric heat. 0=NOT ACTIVE, 1=ACTIVE

Diag: Information Warning

Binary

This property indicates a diagnostic that may take none, part, or all of the CSC unit off-line. This diagnostic is reset automatically when the condition causing the diagnostic clears. 0=NOT ACTIVE, 1=ACTIVE

Diag: Last

Multi-State

This property indicates the last diagnostic to occur on the CSC unit. The value in parenthesis below is the hexadecimal code that actually appears on the front panel of the CSC unit. Only the text is displayed on the Diagnostics page of the CSC editor or on the standard graphics.
No Last Diagnostic Present
Morning Warmup Temperature Sensor Fail (97)
Temperature Reset Temperature Sensor Fail (98)
Entering Economizer Water Temperature Sensor Fail (99)
Entering Condenser Water Temperature Sensor Fail (water-cooled) or Outdoor Ambient Air Temperature Sensor Fail (air-cooled) (9A)Leaving Condenser Water Temperature Sensor Fail (9B)
Evaporator Suction Temperature Circuit 1 Fail (9C)
Evaporator Suction Temperature Circuit 2 Fail (9D)
Evaporator Suction Temperature Circuit 3 Fail (9E)
Evaporator Suction Temperature Circuit 4 Fail (9F)
Zone Temperature Sensor Fail (A0)
Supply Air Temperature Sensor Fail (A2)
Low Pressure Cutout Circuit 1 (B5)
Low Pressure Cutout Circuit 2 (B6)
Low Pressure Cutout Circuit 3 (B7)
Low Pressure Cutout Circuit 4 (B8)
Overload Trip Compressor A (BA)
Overload Trip Compressor B (BB)
Overload Trip Compressor C (BC)
Overload Trip Compressor D (BD)
High Pressure Cutout Circuit 3 (BE)
High Pressure Cutout Circuit 4 (BF)
High Motor Winding Temperature Compressor A (C1)
High Motor Winding Temperature Compressor B (C2)
High Motor Winding Temperature Compressor C (C3)
High Motor Winding Temperature Compressor D (C4)
Condenser Water Low Temperature (C9)
Contactor A Fail (CA)
Contactor B Fail (CB)
Contactor C Fail (CC)
Contactor D Fail (CD)
Supply Fan Overload Trip (CE)
Entering Air Low Temperature (CF)
Dirty Filter (D0)
Heat Fail (D1)
Supply Fan High Duct Pressure (DA)

(continued)

Diag: Last (continued)

Multi-State

Unit Communication Fail (DF)
Supply Fan / Low Duct Pressure (E0)
Phase Reversal / Phase Loss (E6)
High Pressure Cutout Circuit 1 (F5)
High Pressure Cutout Circuit 2 (F6)
Improper Compressor Configuration or Unit ID (F8)
Entering Air High Temperature (FE)
Controller Fail (FF)

Diag: Manual Reset Required

Binary

This property indicates a diagnostic that takes part or all of the CSC unit off-line. Resetting of this diagnostic must be done from the unit front panel. 0=NOT ACTIVE, 1=ACTIVE

Diag: MWU Temp Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the morning warmup temperature input reads either lower than 10° F or greater than 150° F. This is an auto reset diagnostic. This property is valid only for CSC units configured with night heat and morning warmup. 0=NOT ACTIVE, 1=ACTIVE

Diag: No Condenser Water Flow

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the UCM is requesting condenser water flow and the condenser water flow input indicates no flow. This is an auto reset diagnostic. This property is valid only for CSC units with water flow switches. 0=NOT ACTIVE, 1=ACTIVE

Diag: Non-volatile Data Error

Binary

This property indicates the active error status of the UCM NOVRAM/BBRAM data. When present, this diagnostic indicates the UCM has been unable to recall its remote setpoints from non-volatile storage, and requires a download of control information. This diagnostic is an information warning diagnostic. 0=DATA OK, 1=DATA ERROR

Diag: OA Temp Sensor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present, on units configured with air-cooled condensers, when the outdoor air temperature input reads either equal to or less than -40 ° F or equal to or greater than 190° F. This is an auto reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Phase Reversal/Phase Loss

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects a phase reversal or phase loss. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: RA Temp High Limit

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the entering air temperature input reads greater than 135° F. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: RA Temp Low Limit

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the unit return air entering temperature input reads lower than 37° F. This is an auto reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: SA Hi Press - Manual

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when a VAV CSC is configured with VAV duct pressure control or a CV CSC is configured with CV duct pressure diagnostic enabled, and the duct static pressure has either exceeded the supply air pressure by 1.0 IWC (for CSCs using communication formats up through CSRN) or the supply air pressure high static limit setpoint (for CSCs using communication formats CSRO and up). This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: SA Temp Sensor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the supply air temperature input reads either lower than 14° F or greater than 160° F. This is an auto reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Supply Fan Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects less than the minimum allowed duct pressure. This diagnostic will automatically reset, and is considered an informational only diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Supply Fan Overload Trip

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects a problem with the supply fan through the current monitoring inputs. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Temp Reset Sensor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when either the external setpoint input reads either lower than 40° F or greater than 90° F, or the zone based setpoint reset temperature input reads either lower than 14° F or greater than 140° F. This is an auto reset diagnostic. This property is valid only for UCMs configured for external setpoint or setpoint reset (the "Config: External Setpoint" property or the "Config: Zone Based Reset" property is set to ENABLE). 0=NOT ACTIVE, 1=ACTIVE

Diag: UCM Bad Config

Binary

This property indicates the active status of this diagnostic. This diagnostic occurs when the UCM detects an improper unit configuration. This is a manual reset diagnostic. 0=NOT ACTIVE, 1=ACTIVE

Diag: Zone Temp Sensor Fail

Binary

This property indicates the active status of this diagnostic. This diagnostic is present when the zone temperature input reads either lower than 10° F or greater than 150° F. This is an auto reset diagnostic. This property is valid only for constant volume CSC units or CSC units with night heat and morning warmup. 0=NOT ACTIVE, 1=ACTIVE

Economizer Control: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to modulate the economizer. AUTO means that the UCM will decide when to modulate its economizer based on its enthalpy input. ENABLE means that the Tracer is telling the UCM it should modulate the economizer. This property is valid only for CSC units configured with airside economizers. 0=AUTO, 1=ENABLE

Economizer Damper Position

Numeric

This is the position of the airside economizer damper, if configured for an airside economizer and economizer is installed. Range: 0 to 100%

Economizer Min Position: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the economizer minimum position. This property is valid only on CSC units with an airside economizer. Range: 0 to 50%.

Economizer Min Position: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the economizer minimum position. This property is valid only for CSC units configured with airside economizers. Range: 0 to 50%

Economizer Request: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM to request economizing. This property is valid only on CSC units with an airside economizer. 0=AUTO, 1=ENABLE

Economizer Water Temp: Entering

Numeric

This property indicates the active temperature of the water entering the economizer. This property is valid only for CSC units with waterside economizers. Range: 0 to 190° F

Enthalpy Input

Binary

This property indicates the status of this hard-wired input to the CSC UCM, indicating whether or not it is OK to economize. ON/YES means it is OK to economize. OFF/NO means it is not OK to economize. This property is valid only for CSC units with airside economizers. 0=OFF/NO, 1=ON/YES

Evap Saturated Refrig Temp: CKT1

Numeric

This property indicates the temperature of the suction line on circuit 1. This temperature is used to predict when frosting will occur on the evaporator coil. Range: 0 to 255° F

Evap Saturated Refrig Temp: CKT2

Numeric

This property indicates the temperature of the suction line on circuit 2. This temperature is used to predict when frosting will occur on the evaporator coil. Range: 0 to 255° F

Evap Saturated Refrig Temp: CKT3

Numeric

This property indicates the temperature of the suction line on circuit 3. This temperature is used to predict when frosting will occur on the evaporator coil. Range: 0 to 255° F

Evap Saturated Refrig Temp: CKT4

Numeric

This property indicates the temperature of the suction line on circuit 4. This temperature is used to predict when frosting will occur on the evaporator coil. Range: 0 to 255° F

External Interlock Input

Binary

This property indicates the active status of this safety input on the CSC unit. CLOSED/RUN means that the unit may run normally. OPEN/STANDBY means there is a problem on the system (e.g., input from an external fire safety device) and the CSC is immediately shut down. 0=OPEN/STANDBY, 1=CLOSED/RUN

Frost Protect

Binary

This property indicates the active status of the display dash on the front panel of the CSC unit. If any of the four suction line temperatures ("Evap Saturated Refrig Temp: CKT 1, 2, 3, or 4" properties) are indicating that a portion of the evaporator is frosting, then this frost protect enunciator is turned on. NO means frost protect is not active and YES means that frost protect is active. 0=NO, 1=YES

Heat Output

Binary

When ON, this property is used to operate a heating source via a pilot circuit. This output will be ON when the CSC unit is actively heating. 0=OFF, 1=ON

Heat Run Time

Numeric

This property indicates the number of hours the heat circuit has run. The counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours.

Heat Starts

Numeric

This property indicates the number of starts the heat circuit has had. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts

Heating Control: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM to disable heating or allow the CSC unit to determine when to heat. 0=DISABLE, 1=AUTO

Heating Control: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to control the heat mode on the CSC unit. 0=DISABLE, 1=AUTO.

Last Control Date Time

Date/Time Numeric

This indicates the date and time when the present value property of this object was last controlled.

Maximum Ventilation: Input

Binary

This property indicates the active status of a hard-wired input to the CSC unit. CLOSED/MAX VENT means that the CSC unit is forced into maximum ventilation mode which overrides everything except unit stop. 0=OPEN/NORMAL, 1=CLOSED/FORCED MAX VENT

Maximum Ventilation: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM to initiate maximum ventilation or allow the CSC unit to determine when to initiate maximum ventilation. 0=AUTO, 1=FORCED MAX VENT

Maximum Ventilation: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to put the CSC unit into the maximum ventilation mode. FORCED MAX VENT means that all compressors and heating will be OFF and the supply fan will be ON. Static pressure control is always active when the CSC is in FORCED MAX VENT. 0=AUTO, 1=FORCED MAX VENT

Mech Cooling Control: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM to control mechanical cooling. DISABLE means that the "Comp: Number Enabled" property is overridden to the "0" value. 0=DISABLE, 1=AUTO

Minimum Off Time

Numeric

This property is the minimum off time assigned to the UCM being represented. This value serves to protect the hardware from cycle times which might harm the hardware.

Minimum On Time

Numeric

This property is the minimum on time assigned to the UCM being represented. This value serves to protect the hardware from cycle times which might harm the hardware.

Minimum Time Remaining

Numeric

This property is the minimum time remaining (if any) of a minimum On/Off time control action for the represented UCM device. PUTS are also allowed so that an operator can intervene on a Minimum On/Off control action that is in progress.

Mode: Heat/Cool

Binary

This property indicates that the CSC unit is in a heating capable or cooling mode. CLOSED/HEAT means that the heating control is active, the compressors are off, and heat may or may not be off. OPEN/COOL means that a cooling or ventilation mode is active or that the unit is off, the compressors may or may not be off, and heat is off. 0=OPEN/COOL, 1=CLOSED/HEAT.

Mode: Occupancy

Binary

This property indicates the active occupancy status of the CSC UCM. 0=UNOCCUPIED, 1=OCCUPIED.

Mode: System Status

Binary

This property indicates whether or not the active operating mode is stopped. 0=STOP/RESET, 1=AUTO

Morning Warmup Setpoint: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the morning warmup setpoint. This property is valid only on VAV CSC units. Range: 40.0 to 90.0° F.

Morning Warmup Setpoint: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the morning warmup setpoint. This property is valid only for VAV CSC units configured with night heat and morning warmup. Range: 40 to 90° F

Morning Warmup Temp: Input

Numeric

This property indicates the value from the morning warmup temperature input (hard-wired sensor on the UCM). This property is valid only on CSC units configured with night heat and morning warmup. Range: 0 to 190° F

Object Identifier

Object ID

Uniquely identifies a particular object. This property is provided primarily to allow the embedding of the object ID in the returned data buffer.

Object Type

Object Type

This property designates the object’s type (i.e., analog input, binary input, TCM, PCM, etc.).

Occ Cooling Setpoint: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the occupied cooling setpoint. This property is valid only on CV CSC units. Range: 50 to 90° F

Occ Heating Setpoint: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the occupied heating setpoint. This property is valid only for CV CSC units configured with night heat and morning warmup or heat/cool autochangeover. Range: 40 to 90° F

Occupancy: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to control the CSC to occupied or unoccupied. 0=UNOCCUPIED, 1=OCCUPIED.

Occupied Cool Stpt: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the occupied cooling setpoint. This property is valid only on CV CSC units. Range: 50.0 to 90.0° F.

Occupied Heat Stpt: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the occupied heating setpoint. This property is valid only on CV CSC units. Range: 40.0 to 90.0° F.

Operating Mode: Unit

Multi-State

This property indicates the active operating mode of the CSC unit. The value in parenthesis below is the hexadecimal code that actually appears on the front panel of the CSC unit. Only the text is displayed on the Diagnostics page of the CSC editor or on the standard graphics.

Stop (00)
Auto (01)
Pre-Fan (04)
Low Air Temp Protection (05)
Maximum Ventilation (06)
Supply Fan On (07)
Pre-Cool (0C)
Economizing (10)
Cooling Level 1 (21)
Cooling Level 2 (22)
Cooling Level 3 (23)
Cooling Level 4 (24)
Econ/Cooling Level 1 (31)
Econ/Cooling Level 2 (32)
Econ/Cooling Level 3 (33)
Econ/Cooling Level 4 (34)
Morning Warmup (40)
Heat (41)
Reset (88)

Outdoor Air Temperature: Input

Numeric

This property indicates the value from the outdoor air temperature sensor input (hard-wired sensor on the UCM). This property is valid only on air-cooled condenser units. Range: -40 to 195° F

Present Value

Multi-State

This property is used to control the unit to one of nine standard operation modes. These modes are defined as UNOCCUPIED, OPTIMAL START, OCCUPIED, OPTIMAL STOP, DEMAND LIMIT, DUTY CYCLE, PRIORITY SHUTDOWN, NIGHT ECONOMIZE, and NIGHT HEAT-COOL. A translation (within the BCU) may take place to map these modes into a simpler mode set.

Reset Gain: Local

Numeric

This property indicates the active value measured from a front panel rotary switch. This property is valid only for CSC units configured with Zone Based Reset. Range: 1 to 8 ° F/° F

Reset Limit: Local

Numeric

This property indicates the active value measured from a front panel rotary switch. This property is valid only for CSC units configured with Zone Based Reset. Range: 5 to 20° F

Reset Reference Temp: Local

Numeric

This property indicates the active value measured from a front panel rotary switch. This property is valid only for CSC units configured with Zone Based Reset. Range: 60 to 80° F

Reset Temperature: Input

Numeric

This property indicates the value from a hard-wired sensor used with the "Config: Zone Based Reset" property. This property only applies if the CSC is configured for zone based reset. Range: 9 to 145° F

Return Air Temperature

Numeric

This property indicates the value from the hard-wired sensor measuring the temperature of the unit intake air. This sensor is used to generate the RA Temp High Limit and RA Temp Low Limit diagnostics as well as failure of the sensor. Range: 0 to 190° F

SA Cooling Setpoint: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the supply air cooling setpoint. This property is valid only on VAV CSC units. Range: 50 to 90° F.

SA Cooling Setpoint: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the supply air cooling setpoint. This property is valid only for VAV CSC units. Range: 50 to 90° F

SA Pres High Static Limit: Local

Numeric

This property indicates the active value measured from front panel potentiometer. Either this property or the ‘SA Pressure Control Band: Local ‘ property will be valid depending on the Communication format in use. This property is valid only when the ‘Communication Format’ property indicates that the CSC CSRO or CSC CSRP comm format is in use. Range: 1.0 to 5.0 IWC

SA Pressure Control Band: Local

Numeric

This property indicates the active value measured from front panel potentiometer. Either this property or the ‘SA Pres High Static Limit: Local ‘ property will be valid depending on the Communication format in use. This property is valid only when the ‘Communication Format’ property indicates that the CSC pre-CSRO comm format is in use. Range: 14 to 100%.

SA Pressure Setpoint: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM as the supply air pressure setpoint. This property is valid only on VAV CSC units that are configured for duct pressure control. Range: 0.5 to 4.0 IWC

SA Pressure Setpoint: Tracer

Numeric

This property indicates the value that will be communicated by the system to the UCM and used as the supply air pressure setpoint. This property is valid only on VAV CSC units that are configured for duct pressure control. Range: 0.5 to 4.0 IWC

SA Pressure: Input

Numeric

This property indicates the active value of the supply air pressure. This property is valid only on VAV CSC units that are configured for duct pressure control, or on CV CSC units that are configured with the constant volume duct pressure diagnostic. Range: 0.0 to 5.9375 IWC

SA Temp Control Band: Local

Numeric

This property indicates the active value measured from front panel potentiometer. Range: 2 to 12° F

SA Temp Reset Setpoint

Numeric

This property indicates the active value of UCM-modified supply air cooling setpoint or day cooling setpoint. This value is arrived at by applying the optional reset logic to the base cooling setpoint. Range: 60 to 80 deg F

SA Temperature

Numeric

This property indicates the active value from a hard-wired sensor measuring the supply air temperature. Range: 0 to 190° F

Supply Fan Run Time

Numeric

This property indicates the number of hours the supply fan has run. Counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 hours.

Supply Fan Starts

Numeric

This property indicates the number of starts the supply fan has had. The counter will stop counting at 255, and will be set to 0 if counters are reset. Counters may be reset as a group only via the "Reset" push button on the Timers page of the editor. Range: 0 to 255 starts.

Supply Fan Status

Binary

This property indicates the active status of the supply fan output. 0=OFF, 1=ON

Timed Override Request

Binary

This property indicates whether or not the CSC unit is requesting to be allowed to be in timed override. 0=NO, 1=YES

Unit Auto/Stop: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to disable the CSC unit or put it into an auto mode. 0=STOP, 1=AUTO.

Unit Control Source

Multi-State

This property indicates the actual state of the front panel switch. 0=STOP, 1=LOCAL, 2=REMOTE

Update Tag

Numeric

Object instance update tag. This tag is used to indicate that the nonvolatile memory resident data within the particular instance has changed. The workstation is the primary user of this property.

Ventilation Control: Ref

Referencer

This property indicates the value to be used by the BCU to determine which value to communicate to the UCM to disable ventilation or allow the CSC unit to determine ventilation control. 0=DISABLE, 1=AUTO

Ventilation Control: Tracer

Binary

This property indicates the value that will be communicated by the system to the UCM and used to control the ventilation mode on the CSC unit. DISABLE means that the CSC will turn off its ventilation output. AUTO means that the CSC will turn on its ventilation when requesting ventilation. 0=DISABLE, 1=AUTO.

Ventilation Relay: External

Binary

This property indicates the active status of a hard-wired output on the CSC unit. When ON, it indicates that the UCM has been placed in the fan ON/ventilate mode, and is on during all occupied modes when ventilation control is AUTO. (Tracer can also control this property AUTO and OFF.) 0=OFF, 1=ON

Zone Temperature

Numeric

This property indicates the active value from a hard-wired input on the CSC unit. This property is valid only on CV CSC units and VAV CSC units configured with heat. Range: 0 to 190° F