
Parallel Interface LPT Chapter: Connectors
Beckhoff New Automation Technology CB4052 page 31
3.13 Parallel Interface LPT
The parallel interface is a standard IDC socket connector with a spacing of 2.54 mm. The port address
and the interrupt are set via the BIOS setup.
Description Name Pin Name Description
strobe STB# 1 2 AFD# automatic line feed
LPT data 0 PD0 3 4 ERR# error
LPT data 1 PD1 5 6 INIT# init
LPT data 2 PD2 7 8 SLIN# select input
LPT data 3 PD3 9 10 GND ground
LPT data 4 PD4 11 12 GND ground
LPT data 5 PD5 13 14 GND ground
LPT data 6 PD6 15 16 GND ground
LPT data 7 PD7 17 18 GND ground
acknowledge ACK# 19 20 GND ground
busy BUSY 21 22 GND ground
paper end PE 23 24 GND ground
select printer SLCT 25 26 VCC 5 volt supply
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