12 serial interfaces com3 & com4 – BECKHOFF CB2051 User Manual
Page 30
Chapter: Connectors
Serial Interfaces COM3 & COM4
page 30
Beckhoff New Automation Technology CB2051
3.12 Serial Interfaces COM3 & COM4
The serial interfaces COM1 and COM2 are made available via two 2x5 pin connectors (JST B10B-
PHDSSLFSN, mating connector: PHDR-10VS). 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.
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
10
VCC
5 volt supply
This manual is related to the following products: