2-14 General Description Date Code 20010518
SEL-2020 Instruction Manual
optional nonvolatile Flash memory is installed, the archive message control settings group is
presented to you.
The Set A Command prompts you for the following settings that control messages and data on
each port:
AUTOBUF
You can save unsolicited messages to the port’s buffer with AUTOBUF = Y. If AUTOBUF=N,
the SEL-2020 does not store unsolicited messages received on the port.
STARTUP
STARTUP sets the startup string (such as ACCESS command and password) that the SEL-2020
must send to the device in order to access the device on that port to retrieve data or issue com-
mands.
SEND_OPER
Use this setting on SEL IED ports to associate available operate commands (OPEN, CLOSE,
CONTROL), as determined during auto-configuration, with the breaker (BR1 - BR16) and
remote bit (RB1 - RB16) elements.
MSG_CNT
With the MSG_CNT setting you enter a number from 0 to 12 to tell the SEL-2020 how many
messages you plan on setting for a given port.
ISSUEn
You use the ISSUE setting to write a SEL
OGIC Control Equation that defines at what time,
period, or other logical condition the message will be sent to the attached device.
MESGn
You use the MESGn setting to define the message string that will be sent when the ISSUEn mes-
sage trigger condition is asserted or true.
PARSEn
For MESG1 through MESG8, the response from the attached device can be stored in a data
region associated with the port. If the message requests data that the SEL-2020 can recognize,
the data will be automatically parsed in that data region. If not, the SEL-2020 will ask you to
select a parsing option using the PARSEn setting.
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