Omega RD8800 User Manual Download

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Chapter 3 Getting Started

Page 3-5

3.1.3.3 Alarm/Event Data Window

The

Alarm/Event Window

is used to display

Alarms, Events and Reset information. The
format of the

Alarm/Event Window

is shown

opposite in Figure 3-7.

The first line is the title bar followed by the Alarm
checking status on the second line. If Alarm
checking is enabled the second line will indicate
“Alarm Check On”. Otherwise, it will indicate
“Alarm Check Off” in which case no alarms
will occur. Refer to Section 4.2.3.7

to change

the Alarm checking status.

The format for any entry in the Alarm/Event file
is -

Date, Time, Point, Status, Value

. The

Date

is shown as Month/Day/Year, the

Time

is shown

as Hours:Minutes:Seconds, and the

Point

value

is shown as Px, where x is the Point number.

The

Status

information or message depends on the type of Alarm/Event. For linear inputs, the Alarm/Event

Status can be HIGH 1 or LOW 2, where the number is the alarm count up to a maximum of 5. For
conditional inputs, the Alarm/Event Status can be OPEN, CLOSED, TRUE or FALSE where the value is
the actual value at the time the alarm was registered. An Alarm/Event Status of “*” is an Alarm returned to
normal condition at the time the point came out of alarm. Resettable points, such as totalizers, will show
the Status as RESET with the actual value at the time of reset. Some Resettable point types will have two
entries (see P6 above). The first entry is the date and time that the high peak occurred and the peak value.
The second entry, above it, is the actual time the reset occurred and the value at that time.

NOTE:

Resettable points will not print unless the Reset Print option is turned on. See Section 5.6.5.13.3.

The

Value

shown is dependent on the Event. The Event can be an Alarm, an input contact closure (Event)

or a Reset, either automatic or manual.

For external events via the digital inputs, the user can define separate Status messages, up to ten characters
long, for each of the three inputs, one for input activated (Close) and one for input deactivated (Open).
These user defined Event messages will appear in the

Alarm/Event Window

log as -

Date, Time, Switch

number

(Sx),

Status

(Event message). Default Event messages are CLOSED and OPEN as seen in the

data log example above. Refer to Section 5.9.3 to program Event messages.

3.1.3.4 Trend Chart Windows

The

Trend Chart Window

looks like a traditional “paper” recorder on the screen. It has traces or pens and

emulates the paper chart, moving the “paper” across the screen. There may be as many as twelve pens on
the chart at a given time. Refer to Section 5.5.3 to assign pens to the chart. The trending direction can be
changed to move horizontally (right to left) or vertically (top to bottom). Refer to Section 5.5.4 to change
the trending direction. Figure 3-8 on the next page shows a

Trend Chart Window

in the vertical mode.

Alarms/Events Data Log

Alarm Check On

Date

Time

Point

Status

Value

1/07/03

14:51:33

FALSE