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PINOUT OF INTERFACE
CONNECTOR
The following describes the pinout of the interface connector (signals which
are low when active are overlined).
Parallel interface
Pin
Name
Function
1 STROBE
Goes from high to low (for ~ 0.5 ys) when active
2
DATA()
High when active
3 DATAI
High when active
4 DATA2
High when active
5 DATA3
High when active
6 DATA4
High when active
7
DATA5
High when active
8
DATA6
High when active
9 DATA7
High when active
10 ACK
5LSlow pulse acknowledges receipt of data
11
BUSY
Low when printer ready to receive data
12 PAPER
High when paper out. Can be disabled with EDS setting
13 SELECT
High when printer is on-line
14-15 N/C
16 SIGNAL GND
Signal ground
17
CHASSIS
Chassis ground (isolated from signal ground)
18
+5V +5V o f p
1
GND
Twisted pair ground return
31 RESET
When this input signal is low, printer is reset
32 ERROR
Outputs low when printer cannot continue, due to an error
33
EXT GND
External ground
34-35 NIC
36
SELECT IN
Always high