Alloy-computer-products Network Device BWS-136 Manual de usuario descargar pdf (Pagina 6)

BWS-136 User Manual_amend.doc - 11 -

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 GND

6 DSR - -

7 RTS - -

8 CTS - -

9 - - -

BWS-136 User Manual_amend.doc - 12 -

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

1 2 3 4 5 6 7 8 9 10 11 ... 17 18

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Alloy-computer-products Network Device BWS-136 Manual de usuario Pagina 6