6.4
SEL-751A Relay Instruction Manual Date Code 20100129
Settings
View/Change Settings Over Communications Port
View/Change Settings Over Communications Port
Refer to Section 7: Communications for information on how to set up and
access the relay serial or Ethernet port with a personal computer and how to
use ASCII commands to communicate with the relay.
View Settings
Use the SHOW command to view relay settings. The SHOW command is
available from Access Level 1 and Access Level 2. Table 6.2 lists the SHOW
command options.
You may append a setting name to each of the commands to specify the first
setting to display (e.g., SHO 50P1P displays the relay settings starting with
setting 50P1P). The default is the first setting. The SHOW command displays
only the enabled settings.
Enter Settings
The SET command (available from Access Level 2) allows you to view or
change settings. Table 6.3 lists the SET command options.
You may append a setting name to each of the commands to specify the first
setting to display (e.g., SET 50P1P displays the relay settings starting with
setting 50P1P). The default is the first setting.
Table 6.2 SHOW Command Options
Command Description
SHOW n Show relay group settings: n specifies the settings group (1, 2, or 3); n
defaults to active settings group if not listed.
SHO L n Show logic settings: n specifies the settings group (1, 2, or 3); n defaults to
active settings group if not listed.
SHO G Show global configuration settings.
SHO P n Show serial port settings for port n (n = F, 1, 2, 3, or 4).
SHO F Show front-panel display and LED settings.
SHO R Show Sequential Event Report (SER) and Event Report settings.
SHO M Show Modbus settings.
SHO D Show DNP3 map settings.
Table 6.3 SET Command Options
Command Settings Type Description
SET n Relay Protection elements, timers, etc., for settings group n
(1, 2, or 3)
SET L n Logic SEL
OGIC control equations for settings group n
(1, 2, or 3)
SET G Relay Global configuration settings including Event Messen-
ger, optoisolated input debounce timers, etc.
SET P n Port Serial port settings for serial port n (1, 2, 3, 4, or F)
SET F Front Panel Front-panel display and LED settings
SET R Reports SER and Event Report settings
SET M Modbus Modbus user map
SHO D DNP DNP3 map settings
NOTE: The SET command is not
available up to 90 seconds after the
relay is powered up and up to
40 seconds after a setting change. If
you issue a SET command during this
period, the relay responds with the
following message:
Command Unavailable;
Relay Configuration in
Progress, Try Again.
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