Beckhoff CB1061 User Manual Page 28

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Chapter: Connectors Back Panel Connectors
page 28 Beckhoff New Automation Technology CB1061
3.2.5 Serial Interface COM1
The serial interface COM1 is made available via a 9-pin standard DSUB-connector (male, e.g. FCI
75869-301LF). Signal level is RS232.
The port address and the interrupt are set via the BIOS setup.
Pinout serial port (DSUB connector):
Description
Name
Pin
Description
data carrier detect
DCD
1
6
data set ready
receive data
RXD
2
7
request to send
transmit data
TXD
3
8
clear to send
data terminal ready
DTR
4
9
ring indicator
ground
GND
5
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