Schweitzer Engineering Laboratories SEL-749M, Instruction Manual

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7.19
Date Code 20080918 Instruction Manual SEL-749M Relay
Communications
SEL ASCII Protocol Details
MSR Command
Use the MSR (Motor Start Report) command to view motor start reports. The
relay records a 720-data point report each time the motor starts. The general
command format is listed in
Table 7.31 .
See Section 5: Metering and Monitoring for information on the contents of
motor start reports.
MST Command
Use the MST (Motor Start Trend) command to review the motor start trend
data. The relay records the number of starts and average information for each
of the past eighteen 30-day periods. See
Section 5: Metering and Monitoring
for information on the contents of the motor start trend data. The general
command format is listed in
Table 7.32 .
PASSWORD Command (View/Change Passwords)
This device is shipped with default
passwords. Default passwords should
be changed to private passwords at
installation. Failure to change each
default password to a private
password may allow unauthorized
access. SEL shall not be responsible
for any damage resulting from
unauthorized access.
!
WARNING
Use the PAS command to inspect or change existing passwords.
Table 7.31 MSR (Motor Start Report) Command
Command Description Access Level
MSR n Return the n motor start report where n is event
number. The n defaults to 1, where 1 is the most
recent event.
1
MSR F Display the format of a motor start report. 1
Table 7.32 MST (Motor Start Trend) Command
Command Description Access Level
MST Return the motor start trend data 1
MST R Reset the data stored in the motor start trend buff-
ers. 2
Table 7.33 PASSWORD Command
Command Description Access Level
PAS Display the passwords for each access level
(except Access Level 0, which has no password). 2
PAS level new-
password
Set a password new-password for
Access Level level .
2
PAS level Display the password for the Access Level level . 2
Table 7.34 PAS Command Format
Parameter Description
level Parameter level represents the relay Access Levels 1 or 2.
new-password New password.
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