Contec SPI-8451-LLVA User Manual

4. Jumper Setting 

38 

SPI-8451-LLVA, SPI-8452-LLVA, SPI-8451-LVA 

JP2

Terminator

---

CTS for RS-422

RTS for RS-422

RXD for RS-422/485

TXD for RS-422/485

Function

Terminating resisiter provided

Terminating resisiter provided

Terminating resisiter provided

Terminating resisiter provided

No terminating resister

 (Default)

10

2

9

1

9

10

2

1

9

10

2

1

9

10

2

1

9

10

2

1

 

 

The time, date, and CMOS values can be specified in the Setup program.    The CMOS values can be 
returned to their defaults by using the Setup program.    The RAM data contains the password information 
is powered by the onboard battery. User can erase the CMOS memory content by short pin2 and pin3 of 
JBAT1. 

JBAT1

Function

Normal Operation(Default)

Clear CMOS Content

3

2

1

3

2

1