Card PCI Express 4 cổng RS-422/485 ICP DAS VEX-144 CR

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Thương hiệu: ICP DAS Loại: Card PCI Express

Tình trạng: Còn hàng

Mã sản phẩm: VEX-144

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Mô tả sản phẩm

Card PCI Express 4 cổng RS-422/485 ICP DAS VEX-144 CR

Features

Supports PCI Express x1
Provides 4 RS-422/485 ports
Built-in COM-Selector
128 KB Software Buffer (max.) for Each COM Port Under Windows
128-byte Hardware FIFO for Each Port
±4 kV ESD Protection for i versions
2500 VDC Isolation for i versions
Short Card Design

Introduction

The VEX-144 series card provides 4 RS-422/RS-485 serial ports. Each port can be configured as either RS-485 for half-duplex or RS-422 for full-duplex communication. It supports for speed up to 115200 bps and supports full-duplex communication.

Users may specify a COM port number manually by setting DIP switch, or let the driver choose an available number automatically. The driver provides a maximum of 128 KB software FIFO for each COM port under Windows. It's practical for large file transmission.

The data lines of each serial ports on i version VEX cards come with photocouplers design. The on-board photo couplers use a short optical transmission path to transfer a signal between elements of a circuit, and keep the data lines electrically isolated. It can help cutting down on ground loops, common mode voltages and block voltage spikes, provide electrical isolation, and offer significant protection from serious over-voltage conditions in one circuit affecting the other.

In harsh industrial environments, the on-board ESD protection component (for i version) diverts the potentially damaging charge away from sensitive circuit to protects the computer and equipment from the sudden and momentary electric current.

Specification

Hardware
COM-Selector	Yes (8-bit DIP switch)
Connector	Female DB-37

COM Ports
Ports	4 x RS-422/485 (RS-422: TxD+, TxD-, RxD+, RxD-, RTS+, RTS-, CTS+, CTS-, GND / RS-485: Data+, Data-, GND)
Baud Rate	50 ~ 115200 bps
Parity	None, Even, Odd, Mark, Space
Data Bit	5, 6, 7, 8
Stop Bit	1, 1.5, 2
FIFO Size	Internal 128 bytes