PJL overview
Printer job language (PJL) is an integral part of configuration, in addition to the standard printer
command language (PCL). With standard cabling, use PJL to perform a variety of functions.
●
Two-way communication with the host computer through a bidirectional parallel connection. The
product can send the host computer information about such things as the control panel settings,
and the control panel settings can be changed from the host through two-way communication.
●
Dynamic I/O switching. The product can be configured with a host on each I/O by using
dynamic I/O switching. Even when the product is offline, it can receive data from more than one
I/O simultaneously, until the I/O buffer is full.
●
Context-sensitive switching. The product can automatically recognize the personality (PS or PCL) of
each job and configure itself in 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 are printed in landscape mode
only if they are formatted for it.
PML
The printer management language (PML) allows remote configuration and status monitoring through the
I/O ports.
Control panel
The formatter sends and receives product status and command data to and from a control-panel PCA.
10 Chapter 1 Theory of operation ENWW
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