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The following describes the pinout of the parallel (Centronics-type) inter-
face connector (signals which are low when active are overlined):
Pin 1 Name
Function
1
STROBE Goes from high to low (for 20.5~s) when active
2
DATA0
High when active
3 1 DATA1
1 Hiah when active
9
DATA7 High when active
10
ACK 5~s low pulse acknowledges receipt of data
11 1 BUSY
/ Low when minter readv to receive data
12
PAPER High when paper out. Can be disabled with DIP switch
settine
13
SELECT High when printer is on-line
14.15
N/C
16
SIGNAL GND Signal ground
17 1 CHASSIS
18 I +5v
19-30 GND
31
RESET
32
ERROR
Chassis ground (isolated from signal ground)
+SV DC outuut from minter
Twisted pair ground return
When this input signal is low, printer is reset
Outputs low when nrinter cannot continue. due to an error
33 EXT GND
34,35
N/C
36
SELECT IN
External ground
Alwavs high
110