2 serial ports com2 to com4 – BECKHOFF CB1061 User Manual
Page 38
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
Name
Description
data carrier detect
DCD
1
2
DSR
data set ready
receive data
RXD
3
4
RTS
request to send
transmit data
TXD
5
6
CTS
clear to send
data terminal ready
DTR
7
8
RI
ring indicator
ground
GND
9
10
VCC
5 volt supply
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