Alloy Computer Products Network Device BWS-136 ユーザーズマニュアル

BWS-136 User Manual_amend.doc

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Serial Port Pin Assignments

Serial Port COM1 uses a Male DB9 connector and it includes

RS-232, RS-422 and RS485 signal and pin assignments are

described as follow:

Transmission Signals

Number

RS-232 4-wire

RS485

RS-485

1 DCD

TxD- -

2 RxD

TxD+

3 TxD

RxD+

Data+

4 DTR

RxD-

Data-

5 GND

GND

6 DSR - -

7 RTS - -

8 CTS - -

9 - - -

BWS-136 User Manual_amend.doc

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Digital I/O

Digital I/O uses DB9 connector and the pin assignments

are described as follow

Pin 1: DIO4

Pin 2: DIO3

Pin 3: DIO2

Pin 4: DIO1

Pin 5: DIO0

Pin 6: GND

Pin 7: DIO7

Pin 8: DIO6

Pin 9: DIO5

DIO0 to DIO5 are TTL compatible Programmable

DIO and DIO 6 to DIO7 are CMOS compatible Programmable DIO.

All the DIO channel are pull up +5VDC with a 4.7K Ohm resistor.

As an Output

DIO

GND

As an Input

DIO

GND