Beckhoff CB1051, Manual

Page: 19 / 82

Back Panel Connectors Chapter: Connectors
Beckhoff New Automation Technology CB1051 page 19
3.2.2 Parallel port, serial ports, VGA
On the rear panel, there is a combo connector which comprises three DSUB connectors, one for the
parallel port LPT, one for the serial port COM1, and one for VGA signals.
The LPT port is provided via a 25pin DSUB connector (female).
The serial interface COM1 is made available via a 9-pin standard DSUB-connector. According to the
product order, TTL level signals or RS232 standard signals are provided.
The port address and the interrupt are set via the BIOS setup.
The remaining 15pin DSUB connector (female) is used to attach a VGA display.
Pinout parallel port LPT:
Description Name Pin Name Description
strobe STB# 1 14 AFD# auto feed
data bit 0 PD0 2 15 ERR# error
data bit 1 PD1 3 16 INIT# initialize
data bit 2 PD2 4 17 SLIN# select in
data bit 3 PD3 5 18 GND ground
data bit 4 PD4 6 19 GND ground
data bit 5 PD5 7 20 GND ground
data bit 6 PD6 8 21 GND ground
data bit 7 PD7 9 22 GND ground
acknowledge ACK# 10 23 GND ground
busy BUSY 11 24 GND ground
paper end PE 12 25 GND ground
select SLCT 13
Pinout serial port (DSUB connector):
Description Name Pin Name Description
data carrier detect DCD 1 6 DSR data set ready
receive data RXD 2 7 RTS request to send
transmit data TXD 3 8 CTS clear to send
data terminal ready DTR 4 9 RI ring indicator
ground GND 5