11 LED Indicator on Each Circuit Board
FS100 11.2 7-Segment LED Indicator on the Main CPU Circuit Board
(CPU201R)
11-6
11.2.4 Status of 7-Segment LED Indicator at Alarm Occurrence
Only when the PP is not connected the FS100, the alarm number is
indicated with 4-digit numbers with the letter [A] at its head.
If more than one alarm occurred, the first alarm numbers indicated.
Note that the number of the major alarm is indicated if major and minor
alarms occurred at a time.
Indication spec.: when Alarm 1200 is occurred
Repeat of [ - ]
→ [A] → [1] → [2] → [0] → [0]