Table 1-3: Clear CMOS

CMOSJP6

1 2 3

Clear

1 2 3

Normal

1.5.6Serial Ports (COM1 and COM2) Mode (RS-232/ 422/485)

This jumper is used to set the Serial ports to act in RS-232,422 or 485 transmission mode. The transmission mode of COM1 and COM2 ports can be selected using the following settings of JP1(Pin 1 to 18) and JP2(Pin 1 to 18) respectively.

1.RS-232 mode: close jumper JP1(5-6, 7-9, 8-10, 13-15, 14-16) for COM1, JP2(5-6, 7-9, 8-10, 13-15, 14-16) for COM2.

2.RS-422 mode: close jumper JP1(3-4, 9-11, 10-12, 15-17, 16-18) for COM1, JP2(3-4, 9-11, 10-12, 15-17, 16-18) for COM2.

3.RS-485 mode: close jumper JP1(1-2, 9-11, 10-12, 15-17, 16-18) for COM1, JP2(1-2, 9-11, 10-12, 15-17, 16-18) for COM2.

Table 1-4: COM 1 Mode (RS-232/422/485 Selection)

CMOS

2F JP1 and JP2

 

 

2

4

6

8

10

12

14

16

18

RS-232

 

 

 

 

 

 

 

 

RS-422

RS-485

1

3

5

7

9

11

13

15

17

2

4

6

8

10

12

14

16

18

1

3

5

7

9

11

13

15

17

2

4

6

8

10

12

14

16

18

1 3 5 7 9 11 13 15 17

Chapter 1 Hardware Configuration

1 1

Page 19
Image 19
Advantech MIC-3318 manual Serial Ports COM1 and COM2 Mode RS-232/ 422/485