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Appendix F Parallel Interface Specifications
Signal Definition
(When bi-directional feature is OFF)
DATA STROBE (Pin No.1)
DATA1~8 (Pin No.2~9)
ACKNOWLEDGE (Pin No.10)
BUSY (Pin No.11)
PAPER END (Pin No.12)
SELECT (Pin No.13)
AUTO FEED (Pin No.14)
SIGNAL GND (Pin No.16)
FRAME GND (Pin No.17)
+5V (Pin No.18)
RETURN (Pin No.19~30)
INPUTPRIME (Pin No.31)
FAULT (Pin No.32)
SELECT IN (Pin No.36)
(When bi-directional feature is ON)
Each signal cable is based on IEEE 1284 standard.
170
Active low pulse used to transfer data into the printer
at the same time when DATA1 to 8 is read.
8-bit parallel data input with DATA1 as the LSB
(least sensitive bits) and DATA8 as the MSB (most
sensitive bits).
Active low pulse indicates that data has been
received.
A high signal indicates that the printer cannot receive
data.
A high signal indicates that the printer is out of paper
(Paper End).
A high signal indicates that the printer is online.
A signal transmitted when the bi-direnction feature is
ON.
Grounding for each signal.
Grounding for the printer chassis
+5V voltage at the printer end.
Connected to the grounding for each signal
A low signal initialises the printer.
A low signal indicates that the printer is in an offline
or error state.
A signal transmitted when the bi-directional feature is
ON.
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