New High Speed PC/104 Eight and Four Port RS -232/422/485 Serial Communication Boards

These eight and four port, asynchronous, serial communication boards support field selectable RS-232/422/485 communication.

San Diego, Calif. -January 26, 2004 -ACCES I/O Products, Inc. announces the latest additions to its line of PC/104 boards, the 104 -COM -8SM and 104 -COM -4SM. These eight and four port, asynchronous, serial communication boards support field selectable RS -232/422/485 communication. Ports are accessed via two 40 -pin IDC type right angle header connectors. The boards include a convenient Auto -RTS feature, which makes half -duplex RS -485 communications effortless. The 104 -COM -8SM and 4SM are feature -rich and allow for the connection of multiple serial devices -ideal for a variety of applications such as POS, gaming systems, machine monitoring and control, military, high -density networking applications or any other application requiring the connection of RS -232/422/485 serial devices to a PC/104 compatible system.

The 104 -COM -8SM and -4SM were designed using type 16780 UARTS and include 64 -byte transmit/receive FIFO buffers to protect against lost data in multi -tasking systems while maintaining 100% compatibility with all operating system COM port drivers. A crystal oscillator located on the board permits baud rate capability up to 921.6K. ACCES offers the 104 -COM -8SM and 4SM in both standard and extended temperature versions ideal for outdoor applications or harsh industrial surroundings.

Other features of the Model 104 -COM -8SM and -4SM include:

Operating temperature range: 0 to +70C (Optional extended temp -40 to +80C)
Humidity: 5% to 95% RH, non -condensing
Low power required: +5VDC at 80mA typical, (0.4W) No +/ -12V required
Field selectable RS -232, RS -422 and RS -485
Programmable individual non -volatile COM base addresses with shared IRQs allow for flexible and easy universal system integration.
Fixed bias and jumper -selectable termination provided on each transmit -and -receive channel

The 104 -COM -8SM and -4SM are supported by all operating systems and include a free DOS, Linux and Windows 95/98/Me/NT/2000/XP compatible software package. This includes sample programs and source code in `C` and Pascal for DOS, and `C,` Delphi, C++ Builder, and Visual C++ for Windows. Also included is a graphical option configuration program in Windows. An easy -to -use Windows terminal program simplifies verification of proper operation. Linux support includes installation files and basic samples for register -level programming in `C.`

ACCES I/O Products, Inc. is a leading manufacturer of PC/104, PCI and ISA analog and digital/relay I/O boards, serial communication products and wireless/distributed data acquisition products, systems and accessories. Other PC/104 boards from ACCES include digital and analog I/O, signal conditioning, isolated input/relay output boards and serial communication boards. All hardware comes with a 30 -day, no -risk return policy and a three -year warranty. For further information, visit the company`s web site at

104 -COM -8SM - $249.00
104 -COM -4SM - $194.00

Availability: Now

Delivery: Stock to two weeks ARO

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