n 04H Request Device ID;
Return data using nibble mode reverse channel transfer
Device ID:
The printer sends the following device ID string when it is requested.
IEEE 1284.4 is enabled,
[00H][5EH]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,SPC;
MDL:Stylus[SP]Scan[SP]2000;
CLS:PRINTER
DES:EPSON[SP]Stylus[SP]Scan[SP]2000;
Note: (1)[00H] denotes a hexadecimal value of zero
(2)MDL value depends on the EEPROM setting.
USB
Standard :based on
“Universal Serial Bus Specifications Revision 1.0”
“Universal Serial Bus Device Class Definition for Printing
Devices Version 1.0”
Bit rate :12Mbps (Full speed device)
Data encoding :NRZI
Adaptable connector :USB series B
Suggested cable length :2 meters
PREVENTING DATA TRANSFER TIME-OUTS
Generally, hosts abandon data transfer to peripherals when a peripheral is in the busy state
for dozens of seconds continuously. To prevent hosts from entering this kind of time-out
period, the printer slows down the data reception rate to around several bytes per minute,
even if the printer is in the busy state. This slowdown starts when the remaining open buffer
area decreases to several hundred bytes. The Stylus Scan enters a continuous busy state if
the input buffer becomes full.
Table 1-7. USB connector pin assignments and signals
Pin no. Signal name In/Out Description
1 VCC - Cable power, max. power consumption is 100mA
2 -Data bi-directional data
3 +Data bi-directional data, pull up to +3.3V via 1.5K Ω resistor
4 Ground - Cable ground
Pin #2
Pin #1
Pin #4Pin #3
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