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LV-651 User’s Manual Hardware Setup
Serial Port Jumper Setting
30
2.13 <Serial Port Jumper Setting >
The onboard CN_COM1 RS232 serial port, with jumper selectable RS232/422/485 for
CN_COM2
Connector:
COM1/2
Type: 9-pin Dip male connector on I/O Panel
Pin
Description
Pin
Description
1 DCD/422TX-/485- 2 RXD/422TX+/485+
3 TXD/422RX+
4 DTR/422RX-
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Jumper
: JV1
Type: Onboard 3-pin jumper
JV1
Mode
1-2
COM1 pin-1 for +5V output
2-3
MDCD1-
Default setting
Jumper
: JV2
Type: Onboard 3-pin jumper
JV2
Mode
1-2
COM1 pin-9 for +12V output
2-3
MRL1-
Default setting
Содержание LV-651
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