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Chapter 2 Installation 31

Table 2-14: COM3 RI pin settings (J12)

+5 V +12 V *RI

J12

Table 2-15: COM4 RI pin settings (J11)

+5 V +12 V *RI

J11

2.17.3 COM1/COM2 RI pin setting (J14, J15)

COM1and COM2 can supply +5 V or +12 V power to the serial

devices via the RI pin of the COM port connector. The outputs of

the COM3 and COM4 RI pins are selected by setting J14 and J15

respectively.

Table 2-16: COM1 RI pin settings (J14)

+5 V +12 V *RI

J14

Table 2-17: COM2 RI pin settings (J15)

+5 V +12 V *RI

J15

* default setting

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

6

5

4

3

2

1

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