Epson 2070 User Manual - Page 135

interface reverse channel, Parallel

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Pin Signal no. n o . 14 AFXT 31 INIT 32 ERROR 36 SLIN 18 Logic H 35 +5 V 17 16, 33 19-30 15, 34 Chassis GND NC GND In/Our* Description 30 In Not used. 30 I n This signal's negative pulse initializes the printer. 29 Out This signal's low level means an error has occurred. 30 In Not used. - O u t This line is pulled up to +5 V through 3.9 k resistor. - Out This line is pulled to +5 V through 3.3 k resistor. - - Chassis GND. - - Signal GND. - - Not connected. *In/Out shows the direction of signal flow from the printer's point of view. Parallel interface (reverse channel) 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: IEEE-1284 level 1 device Data transmission timing: Refer to the IEEE-1284 specification A-14 Specifications, Command Summary, and Character Tables

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Pin
Signal
no.
no.
GND
In/Our*
Description
14
AFXT
30
In
Not used.
31
INIT
30
In
This signal's negative pulse initializes the
printer.
32
ERROR
29
Out
This signal's low level means an error has
occurred.
36
SLIN
30
In
Not used.
18
Logic H
-
Out
This line is pulled up to +5 V through
3.9 k
resistor.
35
+5 V
-
Out
This line is pulled to +5 V through
3.3 k
resistor.
17
Chassis
-
-
Chassis GND.
16, 33
GND
-
-
Signal GND.
19-30
15, 34
NC
-
-
Not connected.
*In/Out shows the direction of signal flow from the printer’s point of view.
Parallel
interface (reverse channel)
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:
IEEE-1284 level 1 device
Data transmission
timing:
Refer to the IEEE-1284 specification
A-14
Specifications, Command Summary, and Character Tables