PCL-746+
Features
Speeds up to 115.2 kbps
4-port RS-232/422/485
COMM Card
Four independent RS-232/422/485 serial ports
Interrupts (jumper selectable): 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
Onboard interrupt status register for greater throughput
Automatic data flow control in RS-485 mode
RS-422 or RS-485 modes jumper selectable
Space reserved for optional surge protection on all port lines (in RS-422/485
modes)
Space reserved for termination resistors
Compatible with ARCNET
®
4-port cards supporting SCO UNIX/XENIX
Supports Windows
®
98/2000/XP, Linux
®
Powerful and easy-to-use utility (ICOM Tools)
Introduction
PCL-746+ is a four-port serial communication interface card. The main feature of this card is that each port can be configured individually to RS-232, RS-422 or RS-485 using on-
board jumpers. The card has 16C550 UARTs and improved interrupt handling for reliable operation at transmission speeds of up to 115.2 kbps.
PCL-746+ supports two operating modes: standard mode and enhanced mode. In standard mode each of the four ports can be set up as either the address or the IRQ channel individually.
In enhanced mode all four ports can be set to share the same IRQ. When an on-board interrupt occurs, the interrupt status register indicates which port has generated it. The shared
interrupt can be set to the most common (extended) AT interrupts. This simplifies programming, speeds up interrupt processing, and frees up interrupts for other devices.
The RS-485 mode automatically senses the direction of incoming data and switches its transmission direction accordingly. This feature makes your network look and act just like
an RS-232 network. Application software written for half duplex RS-232 can be used without modification. Moreover, you can simply and quickly build an RS-485 network with just
two wires.
Specifications
Ports
Protocol Selection
UART
Speed
Base I/O Address
Selection
Interrupt Status
Address Selection
IRQ Selection
Data Bits
Stop Bits
Parity
Power Consumption
4 serial ports
RS-232/422/485 (jumper selectable)
4 x 16C550 16-byte FIFO
50 bps ~ 115.2 kbps
From 000H to 3F8H
From 000H to 3F0H
Pin Assignments
3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
5, 6, 7, 8
1, 1.5, 2
None, even and odd
+5 V @ 800 mA typical, 1.5 A max.
±12 V @ 60 mA typical, 120 mA max.
Operating Temperature
0 ~ 50° C (32 ~ 122° F)
Cables
30cm male DB37 to four male DB25 cables
Dimensions
185 x 100 mm (7.3" x 3.9")
Weight
1.1 kg (2.4 lbs) (including cable)
RS-232
RS-422 / RS-485
Ordering Information
PCL-746+
PCL-746+/9
Opt4A
4-port serial interface card.(30cm DB37 to 4 DB25
cable included)
4-port serial interface card. (30cm DB37 to 4 DB9
cable included)
4-port RS-232/422/485 connector cable with male DB9
connector (30cm length)
Online Download
www.advantech.com/products
All product specifications are subject to change without notice
Last updated : January 2005
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