PJL overview
The printer job language (PJL) is an integral part of configuration, in addition to the standard printer
command language (PCL). With standard cabling, the product can use PJL to perform a variety of
functions:
●
Two-way communication with the host computer through a network connection or a USB
connection. The product can inform the host about the control panel settings that can be
changed from the host.
●
Dynamic I/O switching. The product uses this switching to be configured with a host on each I/O.
The product can receive data from more than one I/O simultaneously, until the I/O buffer is full.
This can occur even when the product is offline.
●
Context-sensitive switching. The product can automatically recognize the personality (PS or
PCL) of each job and configure itself to serve that personality.
●
Isolation of print environment settings from one print job to the next. For example, if a print job is
sent to the product in landscape mode, the subsequent print jobs print in landscape mode only if
they are formatted for landscape printing.
PML
The printer management language (PML) allows remote configuration and status read-back through
the I/O ports.
Control panel
The control panel is an 20.3 cm (8 in) full-color SVGA (M880) or 10.9 cm (4.3 in) full-color SVGA
(M855) with capacitive touchscreen and adjustable viewing angle. It includes an easy-access USB
port for walk-up printing and a hardware integration pocket for third-party USB devices such as card
readers.
The control panel has a diagnostic mode to allow testing of the touchscreen, Home button, and
speaker. The control panel does not require calibration.
The M880 model has a QWERTY retractable keyboard beneath the control panel. The keys are
mapped to your language in the same way the virtual keyboard on the product control panel is
mapped. If you select a different keyboard layout for the virtual keyboard, the keys on the physical
keyboard are remapped to match the new settings.
6 Chapter 1 Theory of operation ENWW
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