Beckhoff CB1061 User Manual Page 38

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Chapter: Connectors Internal Connectors
page 38 Beckhoff New Automation Technology CB1061
3.4.2 Serial ports COM2 to COM4
The three serial ports COM2 to COM4 are made available via a 2x5 pin connector each (FCI
75869-301LF, mating connector FCI 71600-610LF). Signals are RS232.
The port address and the interrupt are set via the BIOS setup.
Pinout COM connector:
Description
Name
Pin
Description
data carrier detect
DCD
1
2
data set ready
receive data
RXD
3
4
request to send
transmit data
TXD
5
6
clear to send
data terminal ready
DTR
7
8
ring indicator
ground
GND
9
10
5 volt supply
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