3onedata USB485 Series Руководство по эксплуатации - Страница 8

Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Медиаконвертер 3onedata USB485 Series. 3onedata USB485 Series 18 страниц. Usb to rs-232/485/422
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(2) In theory, RS-485 bus of USB485× at most can be connected with 32 standard 485

devices, but affected by load and communication distance, actual number of at most connecting

with devices may not reach the numerical value (generally more than 20).

V. Definition of Serial Port Pin

USB232:USB to RS-232 converter

USB485B:USB to RS-485 converter

USB485C: USB to RS-485/422 converter

RS-232：

1 :DCD 2: RXD 3 :TXD 4 :DTR 5: GND

6 :DSR 7 :RTS 8: CTS 9 :RI

RS-485：

1 :D-(B) 2 :D+(A) 5: GND

RS-422：

1: T- 2: T+ 3 :R+ 4: R- 5: GND

VI. Installation of Driver Program

Method I: (Recommended)

Enter CD catalog-Setup file folder and execute USB_drv.exe automatic installation wizard

program, and click Next.

USB485× driver program will be installed automatically in your system.

DB9M (male connector, needle type)