Log In

Nucleus Command Systems

Tired of Paying $$ for
SCADA/HMI Software

Try Free Nucleus Command SCADA Software Today!

Contact Us
Celebrating 36 Years

Follow us on Facebook for all the latest news, updates and promotions

 

Credit Cards Accepted

website security

PCL-740

 
pcl-740 image

1-port RS-232/422/485/Current-Loop Card with 16C550 UART
 


 

Introduction
Applications
Features
Specifications
Ordering Information

Introduction Return to top of page

The PCL-740 offers a versatile range of high speed interfacing options. You can switch its single port between popular RS-232, long distance RS-422, multidrop RS-485, or noise-resistant current-loop. The card's 16C550 UART has an on-chip 16-byte FIFO buffer for faster and more reliable communication, especially under Windows.

The PCL-740 comes with a communication software package called PC-ComLIB. The package consists of a configurable DOS driver, a programming library that supports most common languages (such as C, Pascal, Visual Basic, assembly and Clipper) and DataScope. DataScope is a data viewer/ terminal emulator with self-diagnostics utilities for easy troubleshooting and debugging.

The RS-485 mode automatically senses the direction of incoming data and switches its transmission direction accordingly. This feature means your network looks and acts just like an RS-232 network. Moreover, you can simply and quickly build an RS-485 network over two wires. Application software written for half duplex RS-232 can be used without modification.

Applications Return to top of page

  • Instrument controller, distributed control systems
  • Interface to modem, bar code reader, scale, plotter feed and serial links for PCs and instruments
  • PLC monitoring and control
  • Data entry terminals
  • Remote data acquisition and control

Features Return to top of page

  • RS-232, RS-422, RS-485 or current-loop interface
  • 16C550 UART with 16-byte FIFO
  • Transmission speeds up to 115 Kbps
  • Flexible I/O address and IRQ selection
  • IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
  • Complete RS-232 modem control signals
  • Supports 2 wire or 4 wire operation for RS-422/485
  • Automatic RS-485 data flow control
  • Space reserved for termination resistors
  • Supports COM1, COM2, COM3, or COM4
  • PC-ComLIB software included

Specifications Return to top of page

  • Number of Ports: 1
  • Protocol: RS-232, RS-422/RS-485 or current-loop
  • UART: 16C550 with 16-byte FIFO
  • I/O address: From 200H to 3F8H
  • IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
  • Data bits: 5, 6, 7, 8
  • Stop bits: 1, 1.5, 2
  • Parity: Even, odd or none
  • Power consumption:
    5V@180 mA max. ,
    12V@20 mA max.
  • Connectors: DB-9 male and DB-25 male connectors
  • Operating temperature: 32 to 122 degF (0 to 50 degC)
  • Dimensions: 7.25" x 4.13" (185 mm x 100 mm)
  • Shipping weight: 0.44 lb. (0.2 Kg)

 

Ordering Information Return to top of page

PCL-740

RS-232/RS-422/RS-485/Current-loop Serial Interface Card. Includes PC-ComLIB software.
 
 
 
USA Office

Tel:1.877.902.2979-1.425.223.4311
Fax:1.877.329.4324
Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Fax:1.604.925.6170
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027
Fax:1.877.329.4324