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Chapter 8 Special Features: Power Over the Serial Ports 61
2. Open the port and set DTR high.
If you are having trouble with your unit after using the Power over port
feature, you may have tripped the circuit breaker in the unit. You can
identify this by the RI or DTR signal indicators found in the System
Information under Administration on the main menu in the web interface.
Click the port number using serial power. (Remember serial power out is
unavailable if the MEI settings are not 232.)
Under serial power will be a message if the breaker is tripped. Follow the
instructions to reset.
From the command line use the two examples below for additional
information.
display circuitbreaker
Display the status of the circuit breaker
set configuration circuitbreaker=reset
Reset the circuit breaker
Note: set configuration print will also give the status of the circuitbreaker state.
Serial Power Table
Use this table for summary information for a serial power setup.
Note Here are the pins to verify
the jumper position. The
default position has the
jumper on the two pins
furthest from the edge. DO
NOT MOVE THE JUMPER
FROM THE DEFAULT
UNLESS USING RI POWER
IN.