Advantech PCM-3335 Bedienungsanleitung PDF herunterladen (Seite 14)

10-14

Features

Industrial Communication

All product specifications are subject to change without notice Last updated : January 2005

Applications

 PLC monitoring and control

 Serial communication interface for harsh environments

 Data entry terminals

 Remote data acquisition and control systems

 Instrument controller and distributed control systems

Speciﬁcations

 Ports 2

 UART 2 x 16C550 with 16-byte FIFO

 Signal Support TxD+, TxD-, RxD+, RxD-, CTS+, CTS-, RTS+ and RTS-

 I/O Address From 200H to 3F8H

 IRQ 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15

 Isolation Voltage 3000 V

(PCL-745B/745S)

 Surge Protection 2500 V

(PCL-743S/745S)

 Power Consumption +5 V @ 400 mA typical, 950 mA max.

 Connectors Dual DB9 male connectors

 Operating Temperature 0 ~ 65°

C (32 ~ 149°

 Dimensions 185 x 100 mm (7.3" x 3.9")

 Shipping Weight 0.6 kg (1.3 lb)

Ordering Information

 PCL-745B 2-port RS-422/485 communication card with isolation

protection

 PCL-745S 2-port RS-422/485 communication card with isolation

and surge protection

 PCL-743B 2-port RS-422/485 communication card

 PCL-743S 2-port RS-422/485 communication card with surge

protection

PCL-743

PCL-745

2-port High-speed RS-422/485

COMM Cards

2-port High-speed RS-422/485

COMM Cards w/ Isolation

 Two independent RS-422/485 serial ports

 Provides 3000 V

isolation (PCL-745B/745S)

 Provides 2500 V

surge protection (PCL-743S/745S)

 16C550 UARTs with on-chip 16-byte FIFO

 Transmission speeds up to 921.6 kbps

 I/O address and interrupt selectable

 Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15

 Supports 2 wire or 4 wire operation

 Supports Tx, Rx, RTS, and CTS signals

 Automatic RS-485 data flow control or RTS control

 Termination resistors jumper enable/disable

 Space reserved for optional surge protection on data lines (PCL-743B/745B)

 Supports standard DOS COM1, COM2, COM3, and COM4

 Supports Windows

98/2000/XP, Linux

 Powerful and easy-to-use utility (ICOM Tools)

TX-

TX+

RX+

RX-

GND

DATA-

DATA+

GND

RTS-

RTS+

CTS+

CTS-

RS-422 RS-485

Introduction

PCL-743 and PCL-745 provide two RS-422/485 serial ports. Each port utilizes a 16C550 UART with an on-chip 16-byte FIFO buffer for reliable, high-speed serial I/O.

The UART buffer divides data into 16-byte packets before sending them onto the bus. This drastically reduces CPU load and avoids data loss due to failure to respond to the interrupt

request in time. The UART is especially useful for high speed serial I/O under Windows.

The PCL-745B/745S card differs from the PCL-743B/743S card in that the former uses on-board optical isolators to protect your PC and equipment against damages from ground

loops, increasing system reliability in harsh environments. To further increase reliability, PCL-743S and PCL-745S offers surge protection, protecting your system from abrupt high

voltage surges (up to 2500 V

) such as those caused by lightning.

Pin Assignments

PCL-743 PCL-745

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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