Panasonic Switch-M8ePWR PN27089KA Operation Manual page 173

Available commands are listed below.
X Enable/disable the exception handler function.
Press "X." The command prompt changes to "Enable or Disable Exception Handler
(E/D)>." Press "E" to enable the function. Press "D" to disable it.
M Set the exception handler method.
Press "M." The command prompt changes to "Select Exception Handler Mode
(M/R/B)>." Press "M" to display the debug message, "R" to reboot, or "B" to execute
both.
Q Return to the previous menu.
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