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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

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 77 78

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Beckhoff CB3052 Manual do Utilizador Página 32