Epson 890N Service Manual - Page 25

Parallel interface (Reverse channel), which mean

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EPSON FX-890/2190 1.2.2 Parallel interface (Reverse channel) † Specifications „ Transmission mode : IEEE-1284 nibble mode „ Adaptable connector: 57-30360 (Amphenol) or equivalent „ Synchronization : Refer to the IEEE-1284 specification „ Handshaking : Refer to the IEEE-1284 specification „ Signal level: TTL compatible (IEEE-1284 level 1 device) „ Data transmission timing : Refer to the IEEE-1284 specification „ Extensibility request : The printer responds to the extensibility request in the affirmative, when the request is 00H or 04H, which mean; 00H : Request nibble mode of reverse channel transfer 04H : Request device ID in nibble mode of reverse channel transfer † Device ID: The printer sends the following device ID string when it is requested „ FX-890 When IEEE1284.4 is enabled, [00H][4CH] MFG:EPSON; CMD:ESCP9,PRPII9,BDC,D4; MDL:FX-890; CLS:PRINTER; DES:EPSON[SP]FX-890; When IEEE1284.4 is disabled, [00H][49H] MFG:EPSON; CMD:ESCP9,PRPII9,BDC; MDL:FX-890; CLS:PRINTER; DES:EPSON[SP]FX-890; „ FX-2190 When IEEE1284.4 is enabled, [00H][4EH] MFG:EPSON; CMD:ESCP9,PRPII9,BDC,D4; MDL:FX-2190; CLS:PRINTER; DES:EPSON[SP]FX-2190; When IEEE1284.4 is disabled, [00H][4BH] MFG:EPSON; CMD:ESCP9,PRPII9,BDC; MDL:FX-2190; CLS:PRINTER; DES:EPSON[SP]FX-2190; PRODUCT DESCRIPTIONS Interface Revision B 25

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EPSON FX-890/2190
Revision B
PRODUCT DESCRIPTIONS
Interface
25
1.2.2
Parallel interface (Reverse channel)
Specifications
Transmission mode :
IEEE-1284 nibble mode
Adaptable connector:
57-30360 (Amphenol) or equivalent
Synchronization :
Refer to the IEEE-1284 specification
Handshaking :
Refer to the IEEE-1284 specification
Signal level:
TTL compatible (IEEE-1284 level 1 device)
Data transmission timing : Refer to the IEEE-1284 specification
Extensibility request :
The printer responds to the extensibility request in
the affirmative, when the request is 00H or 04H,
which mean;
00H : Request nibble mode of reverse channel transfer
04H : Request device ID in nibble mode of reverse channel transfer
Device ID: The printer sends the following device ID string when it is requested
FX-890
When IEEE1284.4 is enabled,
When IEEE1284.4 is disabled,
FX-2190
When IEEE1284.4 is enabled,
When IEEE1284.4 is disabled,
[00H][4CH]
MFG:EPSON;
CMD:ESCP9,PRPII9,BDC,D4;
MDL:FX-890;
CLS:PRINTER;
DES:EPSON[SP]FX-890;
[00H][49H]
MFG:EPSON;
CMD:ESCP9,PRPII9,BDC;
MDL:FX-890;
CLS:PRINTER;
DES:EPSON[SP]FX-890;
[00H][4EH]
MFG:EPSON;
CMD:ESCP9,PRPII9,BDC,D4;
MDL:FX-2190;
CLS:PRINTER;
DES:EPSON[SP]FX-2190;
[00H][4BH]
MFG:EPSON;
CMD:ESCP9,PRPII9,BDC;
MDL:FX-2190;
CLS:PRINTER;
DES:EPSON[SP]FX-2190;