Salter Brecknell 1200 Series - Manual (Page 23)

Model 122X MiniPrinter User’s Manual 23
Model 1221
Parallel Version
Pin No. Signal Direction Description
1 Data Strobe To printer Samples input data when held low
for 10 microseconds.
2 Data Bit 1
3 Data Bit 2
4 Data Bit 3
5 Data Bit 4 Indicates input data.
6 Data Bit 5 To printer High level indicates “1” and
7 Data Bit 6 low level “0”.
8 Data Bit 7
9 Data Bit 8
10 Acknowledge From printer Indicates character input completion
at low level.
11 BUSY From printer Indicates data cannot be received at
high level.
16-29 0 Volts - Twisted pair return (For pins 1 to 11)
12 0 Volts From printer High = Out of paper.
13 +5v From printer High = printer selected.
32 +5v From printer Low level = Error condition.
The
rest
are not
used.