Epson EPL-N1200 Service Manual - Page 47

Emulation Mode Switch Function, Emulation Switch by SPL

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EPL-N1200 Service Manual General Description 1.4.6 Emulation Mode Switch Function This section describes the emulation mode switch function. 1.4.6.1 Emulation Switch by SPL The four types of emulation switch functions described below are available on this printer. EJL: Eson Job Language This is EPSON's original language system. It is able to skip among various destinations, as shown in Figure 1-11. PJL: Printer Job Language This is HP's original language, which is available with the LaserJet 4 printer. It is able to skip among various destinations, as shown in Figure 1-11. The precise specifications for this language are based on the HP LaserJet 4. The figure below shows three types of mode switching. Neither EJL nor PJL switches the mode directly. They first exit the current mode and return to EJL or PJL. Then they enter another mode. FX EJL I239X PJL Figure 1-11. Emulation Switch by SPL ESCP2 1.4.6.2 Intelligent Emulation Switch The Intelligent Emulation Switch (IES) automatically switches the emulation switch mode, depending on the data sent from the host computer through one of the interface channels. It is able to switch between EPSON Script and other modes, as shown in the figure below. ESCP2 Rev. A FX Figure 1-12. Intelligent Emulation Switch I239X 1-35

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1.4.6
Emulation Mode Switch Function
This section describes the emulation mode switch function.
1.4.6.1
Emulation Switch by SPL
The four types of emulation switch functions described below are available on this printer.
EJL: Eson Job Language
This is EPSON’s original language system. It is able to skip among various destinations, as shown
in Figure 1-11.
PJL: Printer Job Language
This is HP’s original language, which is available with the LaserJet 4 printer.
It is able to skip among various destinations, as shown in Figure 1-11. The precise specifications for
this language are based on the HP LaserJet 4.
The figure below shows three types of mode switching.
Neither EJL nor PJL switches the mode directly. They first exit the current mode and return to EJL
or PJL. Then they enter another mode.
1.4.6.2 Intelligent Emulation Switch
The
Intelligent
Emulation
Switch
(IES)
automatically
switches
the
emulation
switch
mode,
depending on the data sent from the host computer through one of the interface channels. It is able
to switch between EPSON Script and other modes, as shown in the figure below.
I239X
FX
PJL
ESCP2
EJL
Figure 1-11. Emulation Switch by SPL
I239X
FX
ESCP2
Figure 1-12. Intelligent Emulation Switch
EPL-N1200 Service Manual
General Description
Rev. A
1-35