Xylem System 5000 User Manual User Manual

Page 23

Managing Tasks

Each Input can have its own individual

Scan Rate as shown on the Task’s Input

Properties page. Input Properties screens

are accessed through either selecting

a new Input or pressing the Edit Input

button on the Edit Task screen. Simple

scan rates can be edited by pressing the

Edit button next to the current Scan Rate.

Advanced Scanning Options such as

Scan Offsets, Start/Stop Times and Scan

Intervals can be attributed to individual

Tasks by pressing the Advanced (Adv)

button.

Advanced Scanning Options

Defines the offset (positive or negative) for the Task’s specified scan rate. This value is

based off a 24-hour format with 00:00:00 indicating zero seconds. The format is HH:MM:SS.

The Offset must be less than the Scan Rate.
A Scan Offset can be set either before or after the given rate to offset the measuring of data. For

example, an Offset of negative 30 seconds (-00:00:30) in the above scenario would cause the

Batt Task to take measurements at 00:14:30, 00:29:30, 00:44:30, etc.
Scan Offsets allow a common Scan Rate to persist despite unconventional scanning times. If the

Scan Rate was set to 00:14:30 in the above example (with an Offset of 00:00:00), the Task would

scan at 00:14:30, 00:29:00, 00:43:30, etc as the interval would increase each time by 00:14:30

rather than an even 00:15:00. All scan rates, regardless of interval, start each day at 00:00:00.

Offset

Allows a scanning schedule to be

defined for individual Tasks. The Task

Schedule determines when a Task

should be making measurements

and running Outputs on a daily

basis. Each day begins at midnight

(00:00:00) and runs until 23:59:59.

The default Action of Enable Task

Scanning at Time 00:00:00 refers to

starting the Task measurements at the

beginning of the day. All Tasks (unless

an Offset is applied) will have their first

measurement occur at midnight. The

Add, Edit, and Remove buttons can

be used to alter the Task Schedule.An

example Task Schedule is detailed to

the right.

Custom Task Schedule