Wireless Sensor Attributes - Metasys - LIT-1201793 - Software Application - Site Management Portal - 12.0.50

Metasys Site Management Portal Help

Brand
Metasys
Product name
Site Management Portal
Document type
User Guide
Document number
LIT-1201793
Version
12.0.50
Revision date
2023-06-02
Language
English

This object contains attributes common to many Metasys system objects. These common attributes are described in the Common Object Attributes section. This section includes attributes of the Focus/Configuration tab, the Diagnostics tab (if applicable), and any other tab specific only to this object. See the Object and Feature Tabs section for information on the attributes that appear on the other tabs of this object (for example, the Hardware and Options tab appear on point objects).

Note: In the Notes column, letters indicate the following: C - Configurable, D - Default Attribute for Display, N - Value Not Required, R - Affected by Extension’s Reliability, W - Writable.
Table 1. Wireless Sensor Object Attributes - Focus/Configuration Tab

Attribute Name

Notes

Initial Value

Values/Options/Range

Attribute Description

Low Battery

   

Reliability from the Reliability attribute.

Indicates if any wireless sensors defined as children of the Wireless Receiver Objects have a low battery. The Low Battery status is an advanced warning that can occur many days before a wireless sensor ceases to function. You can configure an alarm for this attribute to allow the building operator time to locate the sensor and change the battery. The sensor sends a low battery signal when there is 30 days of battery life left.

Max Value

C,W

3.0

Range = -10 to 100

Units from the Units attribute.

Indicates the maximum value allowed for the Setpoint. This is the value of the Setpoint attribute when the Setpoint adjust dial on the wireless sensor is in the fully clockwise position.

If the Min Value is greater than the Max Value, the Setpoint is forced to the Min Value. Otherwise, these attributes are all used to compute the Setpoint with the following formula:

SP = [(Max Value - Min Value) x (dial position x 0.01)] + Min Value

Min Value

 

-3.0

Range = -10 to 100

Units from the Units attribute.

Indicates the minimum value allowed for the Setpoint. This is the value of the Setpoint attribute when the Setpoint adjust dial on the wireless sensor is in the fully counterclockwise position.

If the Min Value is greater than the Max Value, the Setpoint is forced to the Min Value. Otherwise, these attributes are all used to compute the Setpoint with the following formula:

SP = [(Max Value - Min Value) x (dial position x 0.01)] + Min Value

Occupancy Request

C,W

   

Represents an object reference to the Binary Value object that represents the BV 0 Occupancy Request object of the Zone Sensor device.

Occupancy Status

   

Uses Unocc Occ (Set 106).

Changes to Occupied after pushing the Temporary Occupied button on the Transmitter, if supported by that model. The Occupied state is held for the minutes defined by the Occupancy Time attribute, or until cancelled by a release command.

Occupancy Time

C,W

2

Range = 2–240 minutes

Indicates the time in minutes that the Occupied Output (if defined) is overridden to the Occupied state after pushing the Temporary Occupied button on the Transmitter.

Occupied Output

C,N,W

   

Provides an optional reference to a binary object located anywhere on the Metasys network. The binary object is commanded to Occupied/Unoccupied when the Occupancy Status attribute changes states.

The Present Value attribute of the referenced object at the Priority Scheduling optimal start (OST) priority writes to the output commands.

The Present Value attribute of the referenced object at the Priority Scheduling OST priority writes the None Data Type value to the release commands.

These operations assume that the referenced object is an output object that has a Present Value that can be written to. Keep this in mind when mapping objects from controllers. You would normally map these points as input points (AI, BI, MSI), but for proper operation you must map the points as output points (AO, BO, MSO).

Offset

C,W

0

Range = +/- 3 degrees

Units from the Units attribute.

Indicates the offset value that is added to the zone temperature reading before updating the Present Value, forcing the Present Value to match a calibrated temperature measured at the wireless sensor.

Present Value

   

Units from the Units attribute and reliability from the Reliability attribute.

Indicates the zone temperature reading at the wireless sensor.

Property Code

C,W

1

Range = 1–31

Indicates the Property Code address of the wireless sensor. This setting must match the Property Code address switch setting of the wireless temperature sensor.

Reliability Action

C,W

None

Uses Reliability Action (Set 14).

Indicates the action taken on the three output references ( Zone Temp Output, Setpoint Output, and Occupied Output) when the wireless sensor object goes Unreliable. The actions are No Action or Release commands.

Setpoint

   

Units from the Units attribute and reliability from the Reliability attribute.

Indicates the Setpoint based on three variables: the Setpoint Adjustment reading (the setpoint adjust dial position) at the wireless sensor, the Min Value, and the Max Value.

The wireless sensor model determines the Setpoint Adjustment. Options include:

- None

- Warmer/Cooler (Range = +/- 5 Deg F)

- Remote Setpoint (Range = 55 to 85 Deg F/13 to 29 Deg C)

If the Min Value is greater than the Max Value, the Setpoint is forced to the Min Value. Otherwise, these attributes are all used to compute the Setpoint with the following formula:

SP = [(Max Value - Min Value) x (dial position x 0.01)] + Min Value

Setpoint Output

C,N,W

   

Provides an optional reference to a temperature Setpoint object located anywhere on the Metasys network. The temperature Setpoint object is commanded when the wireless sensor reports an updated Setpoint value.

The Present Value attribute of the referenced object at the Priority Scheduling OST priority writes to the output commands.

The Present Value attribute of the referenced object at the Priority Scheduling OST priority writes the None Data Type value to the release commands.

These operations assume that the referenced object is an output object that has a Present Value that can be written to. Keep this in mind when mapping objects from controllers. You would normally map these points as input points (AI, BI, MSI), but for proper operation you must map the points as output points (AO, BO, MSO).

Time Remaining

   

Units = Minutes

Indicates the time remaining before the Occupied Output (if defined) is released from the Occupied state.

Transmitter Id

C,W

0

Range = 1–511

Indicates the sensor transmitter Id address of the wireless sensor. This setting must match the transmitter Id address switch setting of the wireless sensor.

Units

C,W

Deg F

Uses Unit Set (Set 869).

Indicates the engineering units displayed on the user interface (Deg F or Deg C). All temperature and Setpoint values convert to the proper units.

Zone Temp Output

C,N,W

   

Provides an optional reference to a temperature input object located anywhere on the Metasys network. The temperature input object is commanded when the wireless sensor reports an updated Present Value.

The Present Value attribute of the referenced object at the Priority Scheduling OST priority writes to the output commands and writes the None Data Type value to the release commands.

These operations assume that the referenced object is an output object that has a Present Value that can be written to. Keep this in mind when mapping objects from controllers. You would normally map these points as input points (AI, BI, MSI), but for proper operation, you must map the points as output points (AO, BO, MSO).

Table 2. Wireless Sensor Object Attributes - Diagnostic Tab

Attribute Name

Initial Value

Values/Options/Range

Attribute Description

Missed Transmissions

   

Indicates the number of wireless sensor transmissions missed by the wireless receiver. The Wireless Receiver Supervisor Object’s Clear Statistics command resets this attribute.

RF Quality

   

Indicates the signal quality level with respect to unwanted wireless noise or interference. This attribute displays a number from 0 to 100. A number less than 50 indicates too much interference.

Rx Data Life Errors

   

Indicates the diagnostic measure of the number of Data Life detected by the receiver module. Data Life errors occur when a wireless sensor does not report its status to the wireless receiver before the Max Data Life timer expires. The Wireless Receiver Supervisor Object’s Clear Statistics command resets this attribute.

Signal Strength

 

Units = Percent

Indicates the wireless signal strength of the wireless sensor as recorded by the wireless receiver module.