EPSON Stylus Color 980 Revision A
Product Description Interface 27
1.3.5 Printer Language and Emulation
Printer language: ESC/P2
IBM X24E emulation
EPSON Remote
1.3.6 Prevention Hosts from Data Transfer time-out
Generally, hosts abandon data transfer to peripherals when a peripheral
is in the busy state for dozens of seconds continuously. To prevent
hosts from this kind of time-out, the printer receives data very slowly,
several bytes per minute, even if the printer is in busy state. This
slowdown is started when the rest of the input buffer becomes several
hundreds of bytes. Finally, the printer is in the busy state continuously
when the input buffer is full.
USB and IEEE1284.4 on the parallel interface do not require this function.
1.3.7 Auto Interface Selection
The EPSON Stylus Color 980 has three types of interfaces: USB,
parallel interface and optional Type-B interface. Each interface can be
selected manually in default setting mode or automatically.
Manual Selection:
One of three interfaces can be selected in default setting mode.
Automatic Selection:
The automatic interface selection is enabled by the default setting
mode. In this automatic interface selection mode, the printer is
initialized to the idle state scanning for which interface is to receive
data when it is powered on. The interface that receives data first is
selected. When the host stops data transfer and the printer is in the
stand-by state for a number of seconds, the printer returns to the
idle state. As long as the host sends data or the printer interface is
busy state, the selected interface is let as it is. The changes to other
interface are prohibited during duplex printing.
Interface state and interface selection
When the parallel interface is not selected, the interface goes
into the BUSY state.
NOTE:An interrupt signal, such as /INIT, on the parallel interface is
not effective while that interface is not selected.
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