Thefollowingdescribesthepinoutoftheparallel(Centronics-type)inter-
faceconnector(signalswhich arelow when activeare overlined):
Pin Name Function
1STROBE Goes from highto low (for 20.5ps) when active
2\DATAO Highwhen active
3. DATA1 Highwhen active
4DATA2 Highwhen active
I5IDATA3 IHi~hwhen active I
6DATA4 Highwhen active
7DATA5 Highwhen active
8DATA6 Highwhen active
9DATA7 Hieh when active
10 ACK 5p.slowpulseacknowledgesreceiptofdata
11 BUSY Lowwhenprinterreadytoreceivedata
I12 1PAPER IHigh whenpaper out. Can be disabled with DIP switch
setting
113 SELECT Highwhen printer is on-line
14,15 N/C
16 SIGNAL GND Signalground
17 ICHASSIS IChassis ground(isolated from signal ground)
18 +5V +5v DCOutmt from minter
19-30 GND Twisted pair groundreturn
31 RESET When thisinput signal is low, printer is reset
32 ERROR OutDutslowwhen printer cannot continue, due to an error

I33 IEXTGND IExternal mound I

.
34,35 N/C
36 SELECTIN Always high
102