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Chapter 14— Printer Configuration and Setup
Power Management
Synchronized On/Off Control Via Printer's DSR Line
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The printer contains the following power management features:
• Synchronized On/Off control via DTR line from the attached host
(DTR On/Off Control).
• Programmable inactivity timeout.
• Programmable low-battery timeout.
• Shutdown command.
• Enter Low-Power mode when idle.
The DSR line is an input to the printer and is controlled by the attached
host's DTR line. The DSR line controls the power on/off and the
operation of the Bluetooth radio module.
Power On/Off Control
A low (inactive) to high (active) transition on this line causes the printer to
turn on. A high (active) to low (inactive) transition on this line causes the
printer to turn off only if it is configured to do so. The factory default
configuration enables power-off on high to low transition on DSR.
The printer stays on for as long as DSR is high (active) unless it reaches
low-battery shutdown point, or it receives a command to shut down.
Please note that the inactivity timeout is disabled while DSR is high
(active).
Bluetooth Radio Control
The Bluetooth radio is enabled when DSR line is low (inactive) or when
the host-to-printer cable is disconnected. In this case, the printer attempts
to communicate to the host over the Bluetooth radio if the printer is
equipped with a Bluetooth radio. In its active (high) state, the DSR line
disables the Bluetooth radio, if any, and communicates over the RX/TX
line of the serial port. For printers that are not equipped with a Bluetooth
radio, the host terminal must still keep the DSR line at an active state.
You can program the printer to timeout and turn itself off upon reaching a
predefined inactivity period. The factory default inactivity timeout is
2 minutes. You can change this setting by sending the following command
to the printer.
! UTILITIES
TIMEOUT n
END
Where n is the inactivity timeout in 0.125-second increments. For
example, set n to 960 for a 2-minute inactivity timeout (120 seconds x 8).
EasyCoder PL-Series Printer Programmer's Reference Manual
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