RFL 9780 RFL Electronics Inc.
April 8, 2003 15-2 (973) 334-3100
15.2 SEQUENCE OF EVENTS/IRIG-B MODULE
15.2.1 DESCRIPTION
The SOE/IRIG-B module is a status monitor card for the RFL 9780 which monitors system input status
every 1 ms. Events are recorded when any point changes state or if the CPU gets reset. The Sequence
Of Events log is a record of the state of each point, the state of CPU reset, and the date and time the
record was saved. The system can record up to 40 events. The module has a free running clock, which
is synchronized every ten seconds to the IRIG-B clock if IRIG-B is available. The SOE data is retrieved
via a 3-wire RS-232 port with a DB9 connector. Refer to Section 16 for information on how to use the
RS-232 port to access the RFL 9780 SOE/IRIG-B module.
The SOE/IRIG-B module will record different sets of data points for different RFL 9780 system
configurations. For the 9780 TX Only mode, the module will record the status of six data points; for the
9780 RX Only mode, the module will record the status of seven data points; for the 9780 TX/RX mode,
the module will record the status of ten data points; for the 9780 TX/TX mode, the module will record
the status of nine data points; for the 9780 RX/RX mode, the module will record the status of eleven
data points. The sets of data points for each of these modes are listed in Table 15-1.
Table 15-1. RFL 9780 Sequence of Events data points
9780 TX Only 9780 RX Only 9780 TX/RX 9780 TX/TX 9780 RX/RX
CPU Boot Up
Tx Fail
Trip Key #1
Trip Key #2
Power Fail #1
Power Fail #2
CPU Boot Up
Guard Out
Trip Out
Logic Alarm
Low Level Alarm
Power Fail #1
Power Fail #2
CPU Boot Up
Tx Fail
Logic Alarm
Guard Out
Trip Out
Trip Key #1
Trip Key #2
Power Fail #1
Power Fail #2
Low Level Alarm
CPU Boot Up
Tx Fail 1
Trip Key #1
Trip Key #2
Tx Fail 2
Trip Key #3
Trip Key #4
Power Fail #1
Power Fail #2
CPU Boot Up
Guard Out 1
Trip Out 1
Logic Alarm 1
Low Level Alarm 1
Guard Out 2
Trip Out 2
Power Fail #1
Power Fail #2
Logic Alarm 2
Low Level Alarm 2
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