User guide
USR4204 User Guide
Page 33 of 69
Batch Mode Command: None
Ctrl-R and Ctrl-T Reboot Power Port
While connected to the selected serial port, the user can reboot either USR4204 power port
by using the Ctrl-R and Ctrl-T commands. When a reboot command is entered, power from
the mains power input is disconnected (regardless of the previous state) from output 1 or 2
for approximately 10 seconds after entering a ‘Y’ at the “Are you sure?” prompt, then
reconnected. Both of the power reboot commands remain armed until the break command
or the cancel command is executed, or the serial port closes.
Batch Mode Command: None
Ctrl-B Send Break
While connected to the selected port, the user can manually send an RS-232 break signal of
approximately 750mS by hitting the Ctrl-B keys at the appropriate time. Executing the
break command disarms the reboot commands and disarms further break commands.
Batch Mode Command: None
Ctrl-Z Cancel Arming
Executing the Ctrl-Z command disarms the Ctrl-B, Ctrl-R, Ctrl-T commands.
Batch Mode Command: None
Once a Ctrl-B command or Ctrl-Z command has been executed, any subsequent Ctrl-B, Ctrl-
R, Ctrl-T, or Ctrl-Z characters will be recognized as ordinary data instead of commands.