User manual

Magelis B - 19
1. Introduction: Display unit operating concepts
B
 Advantages in run mode
- When a fault appears, it is often the consequence of other faults.
MAGELIS products, due to their priority system, can display the most
important fault, i.e., that presenting the highest risk to the control-
system architecture.
- All faults are time-stamped on appearance.
The actual display of an alarm depends on the priority it has been
allocated (see section "Display priority", Page 19).
Alarms pending on the control-system architecture are stored in an
"Alarm list".
- The "Alarm" indicator light continuously informs the operator about
the state of the alarm list:
- Off: The alarm list is empty.
- Blinking: The alarm list contains alarms, which have appeared
since the alarm list was viewed (new alarms).
- On: The alarm list contains alarms, which occurred before the
alarm list was viewed (alarms already displayed).
 Display priority
A priority can be associated with each alarm page. An alarm page has
priority over an application page and a system page. An alarm page
does not have priority over a value, which is currently being entered.
Different alarm pages may have different priorities. There are 16
possible levels of priority (the lowest display priority being priority
no. 16).
XBT ref. Note
N200 No alarm management
N200/N400/N410
NU400
R400/R410
No indicator lights