4-8 “Job Done” Examples - (Example 1) Date Code 20010518
SEL-2020 Instruction Manual
4. Use SET A to define a timed trigger condition in the form of (Thh:mm:ss) to send a date
message at a specific time once each day to the relay connected to Port 1.
This setting sequence uses the SET A command to set a message trigger and a message in
Port 1 of the SEL-2020. This example sets the SEL-2020 to issue the date command to the
relay attached to Port 1 once each day. Even though you supply IRIG-B time to the relays, if
a relay is powered down for any reason it may need this date information to establish the
current year because the year is not supplied by IRIG-B. The date is retrieved from the
SEL-2020 Global data region and formatted in a message string that the relay will recognize.
The SEL-2020 maintains date and time information in the Global data region. You can
access this information using the VIEW command. Use the labels displayed by the VIEW
command when you define the date message sequence with the SET A command. For an
interpretation of the labels shown in the VIEW screen, see Table 9.2 and the description of
the Global data region in Section 9: Database.
To see the Global data format, type VIEW 1:GLOBAL <ENTER> to display Global
database information.
Your screen should look like this:
*>>VIEW 1:GLOBAL<ENTER>
VIEW 1:GLOBAL<ENTER>VIEW 1:GLOBAL<ENTER>
VIEW 1:GLOBAL<ENTER>
Port 1, Data Region GLOBAL Data
FID = FID=SEL-2020-R115-V0-D961020
STATUS = 0100h CONFIG = 0CA0h __YEAR = 1995 DAY_OF_YEAR = 62 (03/03)
MONTH = 3 DATE = 3 TIME = 14:12:03.598
ELEMENTS = 04h,00h,00h,20h,FFh,FFh,00h
REMOTE_BIT_REG = 0000h REMOTE_BITS = 00h _YEARS = 95
_HOURS = 14 _MINS = 12 _SECS = 3 PORT_STATUS = 0004h
ALT_PORT = 255 NUM_MESGS = 20 BAD_MESGS = 0
*>>
Now, type SET A 1 to define a timed trigger condition and a message to send the date
message to the relay connected to Port 1 at a specific time once each day. Enter the
information and follow the prompts as shown in the following screen image. Your screen
should look like this:
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