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LV-651 User’s Manual Hardware Setup

Serial Port Jumper Setting

30

2.13

The onboard CN_COM1 RS232 serial port, with jumper selectable RS232/422/485 for
CN_COM2

Connector: COM1/2

Type: 9-pin D-sub male connector on I/O Panel

Pin

Description

Pin

Description

1 DCD/422RX-/485- 6 RXD/422RX+/485+
2 TXD/422TX+

7 DTR/422TX-

3 GND

8 DSR

4 RTS

9 CTS

5 R1

CN_COM1/2

JCSEL1

10

2

1

9

JCSEL1

JCSEL2