5-4
Chapter 5 Specifying Hardware Components
Specifying Hardware Components, Continued
Annunciator
Numbers
Every card in a 4007ES Panel job must have an associated annunciator number, whether it is an
annunciator or not. Annunciator numbers are assigned in the following manner: when a new
unit is added to a job, the unit is assigned the next available annunciator number.
When the first annunciator card is added to such a unit, it also assumes the unit's annunciator
number.
As additional annunciators are added to the unit, there are several cases where the annunciators
share their annunciator numbers. Any additional annunciator cards of the same type added to
the same unit also shares this number.
When an additional annunciator card of a different type is added to the unit, that annunciator
card is given an annunciator number distinct from the number assigned to the earlier
annunciator type.
A card’s annunciator number is important for correct LED Switch operation. For example, a
lamp test switch only lights lamps/LED on cards with the same annunciator number.
Exception to the rules above:
• Internal and external LCD Annunciators require their own annunciator number and do
not share numbers even with their own kind.
Annunciator
Number Sharing
Rules
These rules apply to the annunciator sharing arrangement:
AN Rule 1 - The CPU is annunciator number 0.
AN Rule 2 - Annunciators of the same type in the same unit share annunciator numbers.
To Next Page
Loading...
