Specifications

Chapter 1 Introduction 3
Features
 Two independent RS-232 or Current-loop serial ports
 Each port can be individually configured to RS-232 or current-
loop
 16C550 FIFO UARTs (16-byte FIFO)
 Baud rate up to 56 Kbps
 IRQ selection: 3, 4, 5, 7, 9, 10, 11, 12 or 15
 Complete RS-232 modem-control signals
 Up to four cards per system for a total of eight ports
 Provides 500 VDC isolation protection
 Fully isolated ground and signal lines
 COM1, COM2, COM3 and COM4 software compatibility
Applications
 PLC monitoring and control
 Serial communication in harsh environments
 Data entry terminals
 Remote data acquisition and control
 Instrument controller, distributed control systems
 Interface to modem, bar code reader, scale, plotter