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2 hardware installation, 1 jumper setting, 2) jcomp1: com1 pin 9 function select – Aplex Technology AHM-6077 User Manual

Page 15: Pin 1 rx+ 2 rx- 3 tx- 4 tx

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AHM-6077 User Manual

15

2.2 Hardware Installation

2.2.1 Jumper Setting

(1) JCOM1: COM1 Port RS232/422/485 function select

3-4 closed : RS485

JCOM1

1

1-2 closed: RS232

1

1

5-6 closed : RS422

(2) JCOMP1: COM1 Pin 9 function select

3-4 c l o s e d

: + 1 2 V

J C O M P 1

1-2 c l o s e d

: R S 2 3 2

5-6 c l o s e d

: + 5 V

1

1

1

**COM1 Pin Define

(3) JP1: Inverter VCC 5V/12Vselect (3-pin)

1-2 c l o s e d

I n v e r t e r 1 2 V s e l e c t e d

2-3 c l o s e d

I n v e r t e r 5 V s e l e c t

JP1

JP1

1

3

1

3

Pin

1

RX+

2

RX-

3

TX-

4

TX+

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