8-8 Message Strings Date Code 20010518
SEL-2020 Instruction Manual
relay. Table 8.4 lists the pre-defined strings you can use on auto-configured SEL IED ports for
data collection (SET A MESGx settings). Table 8.5 lists other pre-defined strings that are
available regardless of the port type. Table 8.6 lists pre-defined strings you can use on SEL IED
ports to watch for unsolicited messages (relay auto-messages).
Table 8.4: Pre-Defined Strings for Auto-Messages with Auto-Configured SEL IEDs
String Comment
20METER Send ASCII meter or Fast Meter command, as appropriate.
20DEMAND Send ASCII demand meter or fast demand meter command, as
appropriate.
20TARGET Send ASCII target command sequence or Fast Meter, as appropriate.
Note: When the SEL-2020 collects target data from relays that do not
have Fast Meter capability, the TARGET commands sent by the
SEL-2020 may momentarily modify the front-panel targets on the
relays—just as if you were sending the target command to the
relay without the SEL-2020.
20HISTORY Send ASCII history command.
20STATUS Send ASCII status command.
20BREAKER Send ASCII breaker command.
20EVENT Send ASCII request for standard (4 sample/cycle) event report. Stored in
a parsed format. (Refer to the following subsection for some additional
features.)
20EVENTS Send ASCII request for standard (4 sample/cycle) event report. Stored in
a literal format. (Refer to the following subsection for some additional
features.)
20EVENTL Send ASCII request for long (16 sample/cycle) event report. Stored in a
literal format. (Refer to the following subsection for some additional
features.)
Table 8.5: Other Pre-Defined Strings for Auto-Messages
String Comment
20USER No message is sent, but data from User Region is copied to this region.
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