Firmware
The product has 128 MB of DDR-2 SDRAM, which is used for run-time firmware imaging and print, scan and
copy job information during printing.
Memory use
The product has a 16 KB EEPROM and 16 MB of SPI NOR Flash Memory, which is used for product
configuration information and print driver firmware.
PJL overview
The print job language (PJL) is an integral part of configuration, in addition to the standard print command
language (PCL). With standard cabling, the product can use PJL to perform a variety of functions such as
these:
●
Two-way communication with the host computer through a network connection or a USB connection.
The product can inform the host about such things as the control-panel settings, and the control-panel
settings 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.
LEDM overview
The low-end data model (LEDM) provides one consistent data representation method and defines the
dynamic and capabilities tickets shared between clients and devices, as well as the access protocol, event,
security, and discovery methods.
Control panel
The formatter sends and receives product status and command data to and from the control-panel PCA.
ENWW Formatter-control system 5
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