Type-B Interface (Optional); Interface Selection - Epson Stylus Pro 9000 - Print Engine Service Manual

EPSON Stylus Pro 9000

7.2.11.4 Type-B Interface (Optional)

The EPSON Stylus Pro 9000 supports a Type-B interface (level 2).
Reply message (short version):


When using Co-ax/Twin-ax interface card:
Main type: MTP48p, PW127cl10cpi, PRG (KAxxxx)rev,
AP1200ma
Product name:Stylus[SP]Pro[SP]9000
Emulation type:ESCPL2-00
Entity type: EPSONLQ2


When not using a different (not Co-ax/Twin-ax) interface card:
Main type: MTP48p, PW127cl10cpi, PRG (KAxxx)rev,
AP1200ma, SPD0fast
Product name:Stylus[SP]Pro[SP]9000
Emulation type:ESCPL2-00
Entity type: ESPONLQ2

7.2.11.5 Interface selection

This section describes how the parallel, serial, and optional Type-B interfaces
are selected manually in the default setting mode, or are selected
automatically.

Manual Selection
Select the desired interface through the default setting mode. See
Maintenance Mode on page 17

Automatic Selection
Automatic interface selection is enabled in the default setting mode.
(See
Maintenance Mode on page 17
mode, the printer is initialized to the idle state, where it scans which
interface to activate. The first interface to receive data is selected.
When the host stops data transfer and the printer is in standby for
10 seconds, the printer returns to the idle state. As long as the host
sends data or the printer interface is busy, the selected interface
remains active.
Appendix
for instructions on how to do this.
for instructions). While in this

Interface state and selection
When the parallel interface is not selected, it enters a BUSY state
and the logic signal is set to LOW. An interrupt signal, such as INIT
on this interface, is not effective while that interface is in Nibble or
ECP Mode, or is not selected. When the printer is initialized or
returns to the idle state, the parallel interface goes into a ready
state. The host checks whether the logic signal is LOW or HIGH
before requesting data through the reverse channel.
When the serial interface is not selected, the data terminal ready
(DTR) signal is set to MARK. When the printer is initialized or
returns to the idle state, the serial DTR signal is set to LOW, and the
offline bit is set to Main Status Register (MNSTS).
When the optional Type-B interface is not selected, the offline bit is
set to MNSTS.

Preventing data transfer time-out
Generally, hosts abandon data transfer to peripherals when the
peripheral is in the BUSY state for a predetermined length of time.
To prevent this time-out, the printer receives data very slowly,
several bytes per minute, even when in the BUSY state. This
slowdown starts when there are several hundred bytes in the input
buffer. Only if the buffer fills completely, does the printer enter the
BUSY state.
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