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Interfacepin outs
Parallelinterface
Pin
Name
Function
1
STROBE
Goes low for 2 0.5vs when active
2
DATAO
High when active
3
DATA1
High when active
4
DATA2
High when active
5
DATA3
High when active
1
1
6
DATA4
High when active
17
I DATA5
I High when active
I
I DATA6
I High when active
I
9
DATA7
High when active
10
ACK
5ps to acknowledge receipt of data
I
11
I
BUSY
I
Printer sets line low when ready to
receive data.
I
12
PAPER
High when paper runs out. Can be
disabled with EDS setting.
I
I
13
# I SELECT
High when printer is on-line
.
Signal ground
17
CHASSIS
Chassis ground (isolated from signal
ground)
18
+5V
+5V
DC output from printer
1
1
19-30
I GND
Twisted pair ground return
I
I
31
1 — R ESET
I When this signal is set low, the printer
II
I is reset.
I
32
ERROR
I
Low when printer cannot continue due
to an error
I
1
33
EXT GND
External ground
Page151
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