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Fastcom RS-422 Hardware reference manual

Manual is about: 1.5Mbaud Dual Channel RS-422/RS-485 Interface for PCI Bus

Summary of RS-422

  • Page 1

    F ™ a astcom dapters fastcom™: 422/2-pci 1.5mbaud dual channel rs-422/rs-485 interface for pci bus hardware reference manual manufactured by: 9011 e 37th st n wichita ks 67226-2006.

  • Page 3

    9011 e. 37th street n. Wichita, kansas 67226-2006 (316) 636-1131 fax (316) 636-1163 http://www.Commtech-fastcom.Com/ copyright (c) 1999, 2002, 2003 all rights reserved, including those to reproduce this document or parts thereof in any form without permission in writing from commtech, inc. Fastcom a...

  • Page 4: Revision Notes

    Revision notes revision page number changes made 2.1 14 changed warranty to 2 years 2.2 6 added link to installation manual 2.3 12 updated contact information 2.4 8,9 updated fastcom serial settings 2.5 13 changed warranty period to lifetime.

  • Page 5: Contents

    Contents “ce” certificate .............................................................................................................. 1 introduction description / block diagram ............................................................................................ 3 specifications / features...

  • Page 7

    1 european union declaration of conformity information technology equipment the company commtech, inc. Declares under its own and full responsibility that the product " fastcom: 422/2-pci - revision 1.0 " on which is attached this certificate is compliant to the "89/336/eec" directive, amended by 92...

  • Page 8

    2.

  • Page 9: Introduction

    3 introduction the fastcom: 422/2-pci adapter is the fastest, most advanced two-channel rs-422/485 adapter in the industry. Primarily designed for commercial, industrial, and oem applications, the fastcom: 422/2-pci features two discrete rs-422/485 channels, complete with rts and cts hand-shaking si...

  • Page 10: Specifications:

    4 specifications: uart 16c850 baud range any rate up to 1.5 mbaud buffering transmit - 128 bytes receive - 128 bytes interface rs-422 / rs-485 tx, rx, rts, cts bus pci power requirements: +5 600ma (typical) address requirements: pci controller 128 bytes uarts 16 bytes control registers 4 bytes inter...

  • Page 11: Fastcom: 422/2-Pci

    5 fastcom: 422/2-pci board layout pci controller 16c850 uarts channel 1 (db9 connector) channel 2 (db9 connector) transmit/receive leds channel 1 channel 2 packing list fastcom: 422/2-pci card fastcom cd if an omission has been made, please call technical support for a replacement..

  • Page 12: Hardware Installation

    6 hardware installation important: observe electrostatic discharge (esd) precautions when handling the fastcom: 422/2-pci board. 1. Unpack the fastcom: 422/2-pci. Keep the box and static bag for warranty repair returns . 2. Select an open pci slot in your pc. 3. After removing the blank bracket from...

  • Page 13

    7 click the ok button to run the program. 3. With the tty program running, select settings from the menu. Select the com port number that has the loopback plug on it. Uncheck all of the flow control checkboxes (dtr/dsr, rts/cts, xon/xoff). Click ok. From the tty main menu select action, then connect...

  • Page 14: Fastcom Serial Settings

    8 fastcom serial settings clock/4 clock divisors of 1 and 4 are available. Clearing the checkbox selects a divisor of 1 and setting the checkbox selects a divisor of 4. It is best to leave this box unchecked. Auto 485 when checked, out1 of the uart becomes a 485 driver control signal, enabling autom...

  • Page 15

    9 baud rate not shown, type the baud rate in the box next to 115200 (e.G., type 128k as 128000), and hit the tab key. Do not hit enter. Hitting enter will exit the program. If the baud rate changes after you tab, move to the next box down and try again. Continue moving down until the baud rate stays...

  • Page 16: Db9 Pin Description

    10 db9 pin description the fastcom: 422/2-pci features two rs-422/rs-485 channels, which are accessed through two db9 connectors on the board. The following is a pin description of the db9 connectors: pin no. Signal name direction 1 signal ground (gnd) ground 2 ready to send + (rts+) output 3 ready ...

  • Page 17: Rs-422/rs485

    11 rs-422/rs485 most engineers have worked with rs-232 devices at least once in their career. If you have never worked with rs-422 or rs-485 devices, you will be pleased to know that working with the fastcom: 422/2-pci is not much different from working with an rs-232 device. The rs-422 standard was...

  • Page 18: Termination Resistance

    12 termination resistance in both the rs-422 and the rs-485 mode, the receiver end of the cable between two stations must be terminated with a resistor equal to the characteristic impedance of the wire. This is to prevent signal reflections in the wire and to improve noise rejection. However, you do...

  • Page 19: Technical Support

    13 technical support all products manufactured by commtech are warranted against defective materials and workmanship for the lifetime of the product. This warranty is available only to the original purchaser. Any product found to be defective will, at the option of commtech, be repaired or replaced ...

  • Page 20

    14 appendix a 16c850 uart data.