RFC-1 Programming Examples page 7.12
7.11 Tower Light Alarm Block—Daylight Hours
In this example we will program an alarm block that disables the telemetry alarm programmed in the previous
example. In this case we want to block the tower light alarm so that it is not active during daylight hours. The block is
not necessary if you are using an ACM-2 AC Current Monitor and have a daylight sensor connected to the
appropriate inputs. The daylight sensor is the preferred method but the alarm block is effective if programmed
properly.
Alarm blocks share memory space with the date/time triggers. The alarm block will be programmed at Date/Time
Trigger 2. We will block the alarm from 6 am to 6 pm every day of the week during the month of April. These are
fictitious times chosen for the example. Choose times appropriate for your installation and region.
1. Enter the advanced programming mode: 80
2. Enter the advanced programming security code: 4150
3. Enter the starting address from the address table for Date/Time Trigger 2: 0624
4. Enter the value that indicates that this is an alarm block rather than a time trigger: 15
5. Press the # key to enter this value and increment to the next address in memory
6. Enter the number representing the alarm to block (1=A, 2=B, 3=C, etc.): 3
7. Press the # key to enter this value and increment to the next address in memory
8. Enter up to two digits for the month in which this block should be active: 4 (April)
9. Press the # key to write this value and increment to the next address in memory
10. Enter the day of the week on which this block should be active: 15 (every day)
11. Press the # key to write this value and increment to the next address in memory
12. Enter the first digit of the hour at which this alarm block starts: 0
13. Press the # key to write this value and increment to the next address in memory
14. Enter the second digit of the hour at which this alarm block starts: 6
15. Press the # key to write this value and increment to the next address in memory
16. Enter the first digit of the minute at which this alarm block ends: 1
17. Press the # key to write this value and increment to the next address in memory
18. Enter the second digit of the minute at which this alarm block ends: 8
19. Press the # key to write this value and increment to the next address in memory
20. Press the ❊ key to exit the programming mode
The ability to block an alarm during a specific month or on certain days of the week was added in software version 6.
Alarm blocks are available in previous versions but they are active every day of the year. The programming section
of this manual details the options available for blocking alarms.
The alarm channel is scanned even when it is blocked but when the system tries to trigger an alarm during the
blocked hours it is bypassed.
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