BECKHOFF CB3052 - Manual (Page 32)

Chapter: Connectors Serial Interface COM1
page 32 Beckhoff New Automation Technology CB3052
3.16 Serial Interface COM1
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.
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