100 MM GRAPHICS RECORDER: USER GUIDE
HA027271
Issue 12 Mar 04
User Guide
Page 14
Instrument Alarm Summary
Display Contrast
Alarm & Message options
Ack all Alarms
Alarm Summary
Message Log
Instrument Alarm Summary
Ok
Maths channel Failure
network boot failure
Ack all Alarms
Confirm acknowledge of alarms?
No
Yes
1 (1)
Water temp 1a
60.0000
68.5277
C
2 (1)
Water temp 1b
30.0000
23.4531
C
2 (2)
Water temp 1b
10.0000
15.7773
C
3 (1)
0il pressure
250.0000
260.3425PSI
4 (1)
Transfer
15.3678
Channel no.(alarm no.)
Channel descriptor
Alarm type symbol
Alarm Summary
Setpoint value
(Absolute alarms only)
Current process value
Group 1
Group 2
Goto Group
The 'Goto Group' win-
dow does not appear
for single group
recorders.
Ack Alarm
Confirm acknowledge of alarm?
No
Yes
Touch Alarm area
(e.g. channel alarm symbol)
Touch alarm to
call 'Acknowledge'
dialogue box.
See section 3.2.1 for
Message Log details
3.1.3 Alarm indicators
This area of the display can contain up to four icons:
,
,
Pressing this area of the screen calls a pop-up display (figure 3.1.3a) allowing the user to view messages to acknowl-
edge all channel alarms, or to display the Alarm Summary page. Also incorporated in this display is a slider control
allowing the user to optimise the display contrast for the local environment. For channel alarm symbols, refer to '
', above.
ALARM SUMMARY PAGE
As shown in figure 3.1.3a, below, the alarm summary page contains the following information:
1.
Alarm identifier. This appears as a point ID, followed by the relevant alarm number in parentheses. For exam-
ple, Alarm 1 on maths channel 6 would appear as: D6 (1). Maths channels are prefixed by 'D'. Totalisers are
prefixed by 'T' and Counters are prefixed by 'C'. Input channels are not prefixed.
2
Alarm threshold for absolute alarms only
3
The current process value for the point
4
An alarm symbol (see Table 3). Alarm symbols flash until acknowledged.
Notes:
1.
Alarms are always listed in Point/Alarm order with input channels first, followed by derived chan-
nels, totalisers and counters, if these options are fitted.
2
When the alarm source returns to its non-alarm state: Unlatched alarms are removed from the list
whether or not they have been acknowledged; latched alarms remain displayed until acknowledged.
See
for a description of alarm types and actions.
3.
There are no time or history components associated with the Alarm Summary. If Alarm messages have
been enabled in the relevant group's configuration (
), then alarm initiation/acknowledgement
times and dates can be found from the trend and trend history displays, described in
,
or in
Message log, described in section 3.2.1.
4.
If an alarm is active on a channel which is not included in either group, then although the channel alarm
symbol will flash, the alarm will not appear in the alarm summary pages.
Figure 3.1.3a Alarm and message options display and contrast control
