If the number of failures for a displayed object exceeds 500, then alarms for the object have no details and its background gets pink (Fig. 3.6—1).
Fig. 3.6—1 Exceeding the allowed number of failures
The number of failures is calculated not for each interval, but for a range of intervals. Consider the case depicted in Fig. 3.6—1. Here, the calculation is performed for ten columns from 3:30 p.m. to 6:00 p.m. and for one column from 6:00 p.m. to 6:15 p.m. Even if the maximum number of failures is exceeded in three columns, the background of all ten columns gets pink.