Analog Totalization Attributes - Metasys - LIT-12011942 - "" - Software Application - Metasys Open Data Server

Analog Totalization Attributes - Metasys - LIT-12011942 - "" - Software Application - Metasys Open Data Server - 10.1

Metasys Open Data Server Help

Product

Building Automation Systems > Databases and Data Servers > Metasys Open Data Server

Document type

User Guide

Document number

LIT-12011942

Version

10.1

Revision date

2019-10-14

The Analog Totalization extension contains attributes common to Metasys system objects. For details, see Common Object Attributes.

The following table lists the attributes specific to the Analog Totalization extension. Click the attribute name in the table for a description of the attribute.

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. Analog Totalization Extension Attributes
Attribute Name	Notes	Initial Value	Values/Options/Range	Description
Display Precision	C,W	10ths	Uses Display Precision (Set 0)	Indicates the rounded position and the number of decimal places to display for this extension.
Executing		Active	Active Totalize Limit Inactive	Reflects the status of this extension. Active: The extension is calculating and has not reached the Totalize Limit. Totalize Limit: The extension has reached the limit and has stopped calculating because Rollover is set to False. Inactive: The extension is unreliable or disabled and is not calculating.
Input Reference	C			Specifies the object and attribute monitored by this extension. If this attribute is unreliable or falls below the Low CutOff Value, totalization is temporarily suspended.
Low CutOff Value	C,W			Specifies the object and attribute monitored by this extension. If this attribute is unreliable or falls below the Low CutOff Value, totalization is temporarily suspended.
Present Value	C,D,R,W			Represents the current value of the extension.
Reliability		Reliable	Uses Reliability (Set 503)	Represents the reliability of the Present Value. If the Input Reference becomes unreliable, the totalization extension monitoring the input becomes unreliable.
Reset (This attribute does not appear in a view, but may be scheduled, trended, and so on.)	W	False	False True	Forces the extension into a reset condition. (Terminates any ongoing calculations, restores the Present Value to initial state, and, for each triggerable attribute, forces a COV report.) This attribute does not appear in a view, but may be scheduled, trended, and so on.
Reset Date				Represents the date of the last Reset condition of the extension.
Reset Time				Represents the time of the last Reset condition of the extension.
Rollover	C,W	False	False True	Defines the special action that the totalization extension must take when the Present Value reaches the Totalize Limit value. If the Rollover attribute is set to False, the Analog Totalization extension ceases further operation when the Present Value equals or exceeds the Totalize Limit value. If it is True, it resets the present Value to 0.0 and resumes a new cycle of totalization.
Rollover Count		0	0–4,294,967,295	When the Rollover attribute is True, this value increases each time Present Value reaches a value equal to or greater than the Totalize Limit value.
Scale Factor	C,W	1.0	Minimum Value > 0	Indicates the value used to scale the totalized value to either a larger or smaller value than otherwise results.
Timebase	C,W	Hours	Seconds Minutes Hours	Establishes the time frame on which the calculated totalization value is based.
Totalize Limit	C,N,W		Limit > 0	Defines a threshold value that the Present Value must meet or exceed for the totalization extension to take special action. When the Rollover attribute is set to False, the totalization process ceases further operation. When it is set to True, Present Value is cleared to 0, and the totalization process starts over.
Units	C,W		IP SI	Indicates the measurement units of this extension.
Value Before Reset				Indicates the value of the Present Value at the time of the last reset operation.