Parallel Interface (Reverse Channel) - Epson Stylus COLOR 900 Service Manual

EPSON Stylus COLOR 900/900N

1.3.2 Parallel Interface (Reverse Channel)

Y
Transmission mode: IEEE-1284 nibble mode
Y
Adaptable connector: See the forward channel.
Y
Synchronization: Refer to the IEEE-1284 specification
Y
Handshaking: Refer to the IEEE-1284 specification
Y
Data trans. timing: Refer to the IEEE-1284 specification
Y
Signal level: IEEE-1284 level 1 device
(See forward channel.)
Y
Extensibility request:
The printer responds affirmatively when the extensibility request
values are 00H or 04H, which means;
00H: Request Nibble Mode Reverse Channel Transfer
04H: Request device ID using Nibble Mode Rev Channel
Transfer
Y
Device ID:
The printer sends one of the following device ID strings upon
request:
When IEEE1284.4 is enabled;
[00H] [60H]
MFG:EPSON;
CMD:ESCPL2,PRPXL,BDC,D4;
MDL:Stylus[SP]COLOR[SP]900;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]COLOR[SP]900;
When IEEE1284.4 is disabled;
[00H] [5DH]
MFG:EPSON;
CMD:ESCPL2,PRPXL,BDC;
MDL:Stylus[SP]COLOR[SP[900;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]COLOR[SP]900;
NOTE:
1. [00H] denotes a hexadecimal value of zero.
2. MDL value and DES value depend on the EEPROM setting.
3. CMD value depends on the IEEE1284.4 setting.
Chapter 1 Product Description
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