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Chapter: Connectors Serial Ports COM2 through COM4

page 32 Beckhoff New Automation Technology CB3060

3.13 Serial Ports COM2 through COM4

There are three more serial interfaces on the board. Of these, COM3 is available through the power

connector (cf. p. 17), or, as an option, through a 2x5pin connector (FCI 98424-G52-10LF). COM2 and

COM4 and made available via a 2x10 pin connector (FCI 98424-G52-20LF). Signal level is RS232.

The port address and the interrupt are set via the BIOS setup.

Description

Name

Description

data carrier detect COM2

DCDB

DSRB

data set ready COM2

receive data COM2

RXDB

RTSB

request to send COM2

transmit data COM2

TXDB

CTSB

clear to send COM2

data terminal ready COM2

DTRB

RIB

ring indicator COM2

ground

GND

SVCC

5 volt supply

data carrier detect COM4

DCDD

DSRD

data set ready COM4

receive data COM4

RXDD

RTSD

request to send COM4

transmit data COM4

TXDD

CTSD

clear to send COM4

data terminal ready COM4

DTRD

RID

ring indicator COM4

ground

GND

SVCC

5 volt supply

Description

Name

Description

data carrier detect COM3

DCDC

DSRC

data set ready COM3

receive data COM3

RXDC

RTSC

request to send COM3

transmit data COM3

TXDC

CTSC

clear to send COM3

data terminal ready COM3

DTRC

RIC

ring indicator COM3

ground

GND

VCC

5 volt supply

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 112 113

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