Properties Section

Actuator Type

Applies to LAO points. The actuator type is based on the type of output that the actuator receives. The actuator types are:

• Current (4–20 mA)
• Voltage (0–10 Vdc)
• L-Type sensor

Count Both Edges

Applies to LPACI points.

• If unchecked, each on/off pulse (momentary contact) of the point produces one pulse count.
• If checked, each on/off pulse of the point produces two pulse counts.

COV Limit

Applies to LAI, LAO, and LPACI points. Change-of-value limit. The amount of change, in engineering units, a point can experience before a field panel reports the change to other field panels on the BLN.

Delay

This property, an Unsigned type, specifies the minimum period of time, in seconds, that the Present_Value must remain outside the band as defined by the High_Limit and Low_Limit properties before a TO-OFFNORMAL event is generated or within the same band, including the Deadband property, before a TO-NORMAL event is generated. This property is required if intrinsic reporting is supported by this object.

Dynamic COV

Dynamic Change of Value. The field panel will automatically change the points (LAO or LAI) COV limit in an attempt to obtain approximately 1 COV per 100 seconds. The algorithm will increase the COV limit if the point is generating too many COV's and decrease the COV limit if the point is more stable. Using Dynamic COVs will optimize the number of COVs you receive from a point, ensuring you receive important data without generating excessive network traffic.

Engineering Unit

Applies to LAI, LAO, and LPACI points. Common units of measurement that represent a point value such as pressure, temperature, voltage, and volume flow rate. For example, degrees Fahrenheit (DEG F), degrees Celsius (DEG C) and Kilowatt-hours (KWH).

Select a unit of measure from the drop-down menu.

Gain

Applies to LPACI points. Gain-per-pulse edge. Factor used to convert pulses from a LPACI point into the engineering units that represent point values. Gain can be from 0.001 to 5000.0 engineering units represented by each pulse count.

NOTE: If you check the Count Both Edges check box, each on/off pulse produces two pulse produces two pulse counts and the Gain must be halved.

Initial Priority

The priority that a point is initially set to.

Initial Value

The value (such as a temperature setting) that a point is initially set to. The point remains at this setting until it is commanded to a new value.

Intercept

Applies to LAI and LAO points. Slope and intercept are factors used to convert the signals the field panel uses for analog points into the engineering units that represent the point values. The formulas used to calculate slope and intercept are determined by the type of field panel or FLN device that contains the point and the type of physical input or output device represented by the point.

You can use the Slope Intercept Calculator to automatically calculate a point’s slope and intercept.

Instance Number

A unique number specified for BACnet objects in a BACnet field panel or device tht is used when you generate an event notification. The instance number combined with the object type gives you the BACnet object ID. Object IDs must be unique in a BACnet device.

Normally Closed

Applies to physical DI points.

• If unchecked, the contacts for the point are wired to be open when no energy is applied to the point.
• If checked, the contacts for the point are wired to be closed when no energy is applied to the point.

Relinquish Default

Displays the relinquish or release default value for the BACnet point. A BACnet point is set to the Relinquish Default setting when there are no commands for BACnet priorities 1 through 16.

NOTE: Due to firmware limitations the following data points do not have Relinquish Default capabilities if they are virtual and have an address:

• LDO
• LFSSL
• LFSSP
• L2SL
• L2SP

Sensor Type

Applies to LAI points. Indicates the type of input the point receives. The sensor types are:

• Current (4 to 20 mA)
• Thermistor (thermo-electric element with electrical resistance that falls with the rise of temperature)
• Voltage (0 to 10 Vdc)
• Pneumatic (3 to 15 psig)
• Thermistor 10 KOhm
• Thermistor 100 KOhm
• Thermistor 10k Type 3
• MEC RTD (Modular Equipment Controller Resistance Temperature Detector)
• RTD 1k Platinum 385
• RTD 1k Nickel
• RTD 1k Nickel JCI
• RTD 1k Nickel DIN
• L-Type (AI sensor terminated on a FLN device)

Slope

Applies to LAI and LAO points. Slope and intercept are factors used to convert signals the field panel uses for analog points into the engineering units that represent point values. The formulas used to calculate slope and intercept are determined by the type of field panel or FLN device that contains the point and type of input or output device represented by the point.

You can use the Slope Intercept Calculator to automatically calculate a point’s slope and intercept.

State Text Group

Applies to digital points. Allows you to select the text group that represents each point state. For example, On and Off or Start and Stop. The text group assigned to a point state is displayed when you are viewing the point state in workstation applications. The text listed in the table is defined in the Text Group Editor.

Slope Intercept Calculator

An APOGEE Point Editor feature that automatically calculates the slope and intercept for LAI and LAO points.

The Fields that appear on the Slope Intercept Calculator depend on the point type, field panel, sensor, and device range selected.

Totalization Rate

Applies to all points except LPACI and LENUM. Indicates whether a point value is totaled and, if so, whether the value is totaled in hours, minutes, or seconds. Totalization allows the system to track point information such as total run time for a fan or pump, or total volume from a flow rate sensor.

Wire Resistance

Applies to LAI points. An adjustment to a point’s intercept value to compensate for long runs of wire. This applies in cases where resistance of the sensor wire is significant enough to affect the point’s engineering value.