ICS Advent ULTRA-485 User manual

Model ULTRA-485
Product Manual
MANUAL NUMBER : 00750-006-5A

Page - iii
FOREWORD
This product manual provides information to install, operate and or program the referenced product(s)
manufactured or distributed by ICS Advent. The following pages contain information regarding the
warranty and repair policies.
Check our Web site (www.icsadvent.com) for technical information, manuals, and BIOS updates.
Technical assistance is also available at: 800-480-0044 (U.S.) or 858-677-0877 (international).
Customer Comments: If you experience any problems with this manual or just want to provide some
feedback, please send us a message using the online "Service Form" on our Web site (www.icsadvent.com)
under "Support." Detail any errors you find. We will correct the errors or problems as soon as possible and
post the revised manual in our online Support Library. Thank you.
The information in this document is provided for reference only. ICS Advent does not assume any liability
arising from the application or use of the information or products described herein. This document may
contain or reference information and products protected by copyrights or patents and does not convey any
license under the patent rights of ICS Advent, nor the rights of others.
Copyright © 1995, a California Corporation, 6260 Sequence Drive, San Diego, CA92121-4371. ICSAdvent
is a Registered Trademark of ICS Advent. All trademarks and registered trademarks are the property of
their respective owners. All rights reserved. Printed in the United States ofAmerica. No part of this publi-
cation may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, elec-
tronic, mechanical, photocopying, recording , or otherwise, without the prior written permission of the pub-
lisher.

Page - iv
Shipments not in compliance with this Guarantee
and Limited Warranty Return Policy will not be ac-
cepted by ICS Advent.
Guarantee
A thirty day money-back guarantee is provided on all standard products sold. Special order products are
covered by our Limited Warranty, however they may not be returned for refund or credit. EPROMs,
RAM, Flash EPROMs or other forms of solid electronic media are not returnable for credit - but for
replacement only. Extended Warranty available. Consult factory.
Refunds
In order to receive a refund on a product for the purchase price, the product must not have been
damaged by the customer or by the common carrier chosen by the customer to return the goods and
the product must be returned complete (meaning all manuals, software, cables, etc.) within 30 days of
receipt and in an as-new and resalable condition. The Return Proceduremust be followed to assure
prompt refund.
Restocking Charges
Product returned after 30 days, and before60 days, of the purchase will be subject to a minimum20%
restocking charge and charges for any damaged or missing parts. Products not returned within 60
days of purchase, or products which are not in an as-new and re-saleable condition, are not eligible
for credit return and will be returned to the customer.
Limited Warranty
Effective April 1, 1998, all products carry a 2-year limited warranty. Within two years of purchase,
ICS Advent will repair or replace, at our option, any defective product. ICS Advent will service the
warranty for all standard catalog products for the first two years from the date of shipment.
Please note: The 2-year warranty may not apply to special promotion items. Please consult the factory for
warranty verification.
The limited warranty is void if the product has been subjected to alteration, neglect, misuse, or abuse; if any
repairs have been attempted by anyone other than ICS Advent or its authorized agent; or if the failure is
caused by accident, acts of God, or other causes beyond the control of ICS Advent or the manufacturer.
Neglect, misuse, and abuse shall include any installation, operation, or maintenance of the product other than
in accordance with the user’s manual.
No agent, dealer, distributor, service company, or other party is authorized to change, modify, or extend the
terms of this Limited Warranty in any manner whatsoever. ICS Advent reserves the right to make changes
or improvements in any product without incurring any obligation to similarly alter products previously
purchased.

Page - v
Return Procedure
For any Guarantee or Limited Warranty return, please contact ICS Advent's Customer Service at
800-480-0044 (U.S.) or 858-677-0877 (international) and obtain a Return Material Authorization (RMA)
Number. All product(s) returned to ICS Advent for service or credit must be accompanied by a Return
MaterialAuthorization (RMA) Number. Freight on all returned items mustbe prepaid by the customer who
is responsible for any loss or damage caused by common carrier in transit. Returns for Warranty must
include a Failure Report for each unit, by serial number(s), as well as a copy of the original invoice showing
date of purchase.
To reduce risk of damage, returns of product must be in an ICS Advent shipping container. If the original
container has been lost or damaged, new shipping containers may be obtained from ICS Advent Customer
Service at a nominal cost.
ICS Advent owns all parts removed from repaired products. ICS Advent uses new and reconditioned parts
made by various manufacturers in performing warranty repairs and building replacement products.
If ICS Advent repairs or replaces a product, its warranty term is not extended.
ICSAdvent will normally return your replacement or repaired items via Second DayAir. Overnight delivery
or delivery via other carriers is available at an additional charge.
Limitation of Liability
In no event shall ICS Advent be liable for any defect in hardware, software, loss, or inadequacy of data of
any kind, or for any direct, indirect, incidental, or consequential damages in connection with or arising out of
the performance or use of any product furnished hereunder. ICSAdvent liability shall in no event exceed the
purchase price of the product purchased hereunder. The foregoing limitation of liability shall be equally
applicable to any service provided by ICSAdvent or its authorized agent.
Some Sales Items and Customized Systems are not subject to the guarantee and limited warranty.
However in these instances , any deviations will be disclosed prior to sales and noted in the original invoice.
ICS Advent reserves the right to refuse returns or credits on software or special order items.

Page - vi
Advisories
Three types of advisories are used throughout the manual to stress important points or warn of potential
hazards to the user or the system. They are the Note, the Caution, and theWarning. Following is an example
of each type of advisory:
Note: The note is used to present special instruction, or to provide extra information which may
help to simplify the use of the product.
CAUTION!
A Caution is used to alert you to a situation which if ignored may cause injury or
damage equipment.
WARNING!
AWarningisusedtoalertyouofasituationwhichifignoredwillcauseseriousinjury.
Cautions and Warnings are accented with triangular symbols. The exclamation symbol is used in all cautions
and warnings to help alert you to the important instructions. The lightning flash symbol is used on the left
hand side of a caution or a warning if the advisory relates to the presence of voltage which may be of
sufficient magnitude to cause electrical shock.
Use caution when servicing any electrical component. We have tried to identify the areas which may pose
a Caution or Warning condition in this manual; however, ICS Advent does not claim to have covered all
situations which might require the use of a Caution or Warning.
You must refer to the documentation for any component you install into a computer system to ensure proper
precautions and procedures are followed.

Page - vii
Table of Contents
Chapter 1: Introduction ................................................................................................ 1
Overview ............................................................................................................................................... 1
What'sIncluded .................................................................................................................................... 1
FactoryDefaultSettings ....................................................................................................................... 1
Chapter 2: Card Setup ................................................................................................. 2
AddressSelection ................................................................................................................................ 2
IRQSelection ....................................................................................................................................... 3
InterruptModes..................................................................................................................................... 4
RS-485Enable Modes .......................................................................................................................... 5
ConnectorPinAssignments.................................................................................................................. 7
EIA-530 .......................................................................................................................................... 7
SIO-485.......................................................................................................................................... 8
RS-530/422 / 485LineTermination ..................................................................................................... 9
Chapter 3: Installation ................................................................................................ 10
SoftwareInstallation.............................................................................................................................10
HardwareInstallation............................................................................................................................11
Chapter 4: Technical Description.............................................................................. 12
Chapter 5: Specifications .......................................................................................... 13
EnvironmentalSpecifications................................................................................................................13
ManufacturingSpecifications................................................................................................................13
PowerConsumption.............................................................................................................................13
MeanTime BetweenFailure.................................................................................................................13
Physical Dimensions ...........................................................................................................................13
Appendix A: Troubleshooting ................................................................................... 14
Appendix B: Electrical Interface ................................................................................ 15
RS-422 ................................................................................................................................................15
RS-530and RS-449 .............................................................................................................................15
RS-485 ................................................................................................................................................16
Appendix C: Asynchronous Communications ........................................................ 17
CE Declaration of Conformity

Page - viii
List of Figures
Figure 1: Dip-switch SW-1 (Set for address 3F8 Hex) ................................................................................ 2
Figure2:Header E1, IRQSelection ............................................................................................................ 3
Figure3: HeaderE2, Normal IRQMode ..................................................................................................... 4
Figure4: HeaderE2, Shared IRQMode ..................................................................................................... 4
Figure5: HeaderE5 RS-485 TransmitMode .............................................................................................. 5
Figure6: Header E3RS-485Receive Mode................................................................................................ 6
Figure7: Dip-Shunt E4 (EIA-530Mode)...................................................................................................... 7
Figure8: Dip-ShuntE4 (SIO-485 Mode) ..................................................................................................... 8
Figure 9: SW-2, LineTermination ............................................................................................................... 9
Figure10: RS-422/530 Example................................................................................................................15
Figure11:RS-485TwoWire Example ........................................................................................................16
Figure12: Asynchronous Communications BitDiagram ............................................................................17
Current Revision 5A
May 2001

Chapter1: Installation
ManualNumber:000750-006-5 Page1
Chapter 1: Introduction
Overview
The ULTRA-485 provides the PC with an additional RS-422/485 serial port for terminals, PLC
communication, laboratory instrumentation, etc.
The unique feature of the ULTRA-485 is the ability to be RS-485 compatible without the need for
specialsoftware or drivers.This isespecially useful inWindows,WindowsNT, andOS/2environments
where the lower level I/O control is abstracted from the application program. Which means that the
user can effectively use the ULTRA-485 in an RS-485 application with existing (i.e. standard
RS-232) software drivers.
What’s Included
The ULTRA-485 is shipped with the following items. If any of these items are missing or damaged,
contact ICS Advent.
• ULTRA-485 Serial I/O Adapter
• I/O and Communication Documentation CD-ROM
• I/O and Communication Software "C" Series CD-ROM
Factory Default Settings
The ULTRA-485 factory default settings are as follows:
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To install the ULTRA-485 using factory default settings, refer to the Installation section of this
manual.
For your reference, record installed ULTRA-485 settings below:
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ManualNumber:00750-006-5Page2
ULTRA-485Manual
Chapter 2: Card Setup
The ULTRA-485 contains several jumper straps that must be set for proper operation.
Address Selection
The ULTRA-485 occupies 8 consecutive I/O locations and looks to the PC as a standard serial
port. A DIP-switch (SW1) is used to set the port address options for the ULTRA-485 . Be careful
when selecting the port addresses as some selections may conflict with existing ports. The following
table shows the addressing options available with the standard PAL. If different address options are
required, contact Technical Support about a custom PAL option.
2J1troP1-1WS2-1WS3-1WS4-1WS
delbasiDnOnOnOnO
8F3nOnOnOffO
8F2nOnOffOnO
8E3nOnOffOffO
8E2nOffOnOnO
0223nOffOnOffO
8223nOffOffOnO
0224nOffOffOffO
8224ffOnOnOnO
832ffOnOnOffO
003ffOnOffOnO
803ffOnOffOffO
082ffOffOnOnO
882ffOffOnOffO
092ffOffOffOnO
892ffOffOffOffO
Note: Each COM port in the system should have a unique address. Typically COM1: - COM4:
addresses are 3F8, 2F8, 3E8 & 2E8 Hex.
Figure 1: Dip-switch SW-1 (Set for address 3F8 Hex)

Chapter1: Installation
ManualNumber:000750-006-5 Page3
IRQ Selection
The ULTRA-485 contains several jumper which must be set for proper operation.
Header E1: This header selects the interrupt request for the ULTRA-485. If COM1: is selected,
this jumper must be on the IRQ4 setting. If COM2: is selected, this jumper must be on IRQ3.Any
two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting, and
setting the appropriate selections at E3. Consult your particular software for IRQ selection. If no
interrupt is desired, remove the jumper.
NOTE: Most communications software applications default COM3: to IRQ4 and COM4: to IRQ3.
This requires the sharing of interrupts between COM1: and COM3:, and between COM2: and
COM4:. While this is the default, it is not always the preferred setting. Windows 3.1, OS/2 and
UNIX applications typically require a separate IRQ setting for each address. Check your software
configuration instructions to determine the most appropriate.
Figure 2: Header E1, IRQ Selection
Any two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting at
header E1 and setting the appropriate selections at E2. Consult your particular software for IRQ
selection. If no interrupt is desired, remove the jumper.

ManualNumber:00750-006-5Page4
ULTRA-485Manual
Interrupt Modes
Header E2: This header selects the interrupt mode for the ULTRA-485.
“N” indicates the (N)ormal, single interrupt per port mode. This setting is the normal setting for most
applications.
The “S” indicates the (S)hared interrupt mode . Set jumpers to “S” for shared interrupt mode for all
ports sharing an IRQ except for one. Set one of the ports sharing an IRQ to “M”. This provides the
pull-down resistor circuit that makes sharing of IRQ’s possible. This is the preferred Windows and
OS/2 setting. Any two or more ports can share a common IRQ by placing the jumpers on the same
IRQ setting and setting the appropriate selections at E1. Consult your particular software for IRQ
selection. If no interrupt is desired, remove the jumper. ‘M’indicates the inclusion of a 1K ohm pull-
down resistor required on one port when sharing interrupts.
Figure 3: Header E2, Normal IRQ Mode
Set the jumper to ‘S’if you are using more than one ULTRA-485 in a bus or to completely remove
the pull-down resistor for hardware compatibility. Setting theadapterinthis configuration when
it is not accompanied by a pull-down resistor will prevent the ports from triggering an
interrupt.
The following example shows two ULTRA-485 adapters sharing a single IRQ.
Figure 4: Header E2, Shared IRQ Mode
NOTE: If you are using more than one ULTRA-485 or a compatible card in a bus sharing a single
interrupt, you should only have on port set to "M".

Chapter1: Installation
ManualNumber:000750-006-5 Page5
RS-485 Enable Modes
RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri-state driver (not
dual-state) that will allow the electrical presence of the driver to be removed from the line. The
driver is in a tri-state or high impedance condition when this occurs. Only one driver may be active
at a time and the other driver(s) must be tri-stated. The output modem control signal Request To
Send(RTS) istypically usedto controlthe stateof thedriver. Some communication software packages
refer to RS-485 as RTS enable or RTS block mode transfer.
One of the unique features of the ULTRA-485 is the ability to be RS-485 compatible without the
need for special software or drivers.This ability is especially useful in Windows, Windows NT, and
OS/2 environments where the lower level I/O control is abstracted from the application program.
This ability means that the user can effectively use the ULTRA-485 in a RS-485 application with
existing (i.e. standard RS-232) software drivers.
Header E5: This header is used to control the RS-485 mode functions for the transmitter circuit.
The selections are ‘RTS’enable, ‘Auto’enable, or ‘422’which means always enabled. The ‘Auto’
enable feature automatically enables/disables the RS-485 transmitter circuit. The ‘RTS’mode uses
the ‘RTS’ modem control signal to enable the RS-485 transmitter circuit and provides backward
compatibility with existing software products. The ‘422’ mode allows the port to be used in a point to
point RS-422 application where the tri-stating of the transmitter circuit is not required.
RTS
422
AUTO
E5
TX
Auto Driver automatically Enabled/Disabled
RTS Driver Enabled by UART RTS signal
422 Driver always Enabled
Figure 5: Header E5 RS-485 Transmit Mode
NOTE: This jumper is in the "422" position. Note that the modem control outputs (RTS, DTR) are
only valid when Header E5 is in the 422 mode.

ManualNumber:00750-006-5Page6
ULTRA-485Manual
Header E3: This header is used to control the RS-485 enable/disable functions for the receiver
circuit. The RS-485 “Echo” is the result of connecting the boards receiver inputs to the transmitter
outputs. Every time a character is transmitted, it is also received by the board. This can be beneficial
if your software can handle echoing (i.e. using received characters to throttle the transmitter) or it
can confuse your system if it does not. The ULTRA-485 provides a jumper block (E3) to enable or
disable this function.
Theselection atE3 shouldfollow theselection madeat E5if ‘NoEcho’ is desired. If Echo suppression
is not desired, leave the jumper in the ‘422’ position. Also note, the modem control inputs (DSR,
DCD, CTS) are only valid when Header E3 is in the 422 mode. These header blocks are described
in the illustration and table that follow.
RTS
422
AUTO
E3
RX
Auto Receiver automatically Enabled/Disabled
RTS Receiver Enabled by UART RTS signal
422 Receiver always Enabled
Figure 6: Header E3 RS-485 Receive Mode

Chapter1: Installation
ManualNumber:000750-006-5 Page7
Connector Pin Assignments
EIA-530
DIP-shunt E4 selects the pin out for the DB-25 connector P3. With the 5 position shunt in the
EIA-530 mode, the ULTRA-485 complies with the EIA-530 pin out with the following signals
supported:
EIA-530
E4
SIO-485
Figure 7: Dip-shunt E4 (EIA-530 Mode)
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ManualNumber:00750-006-5Page8
ULTRA-485Manual
SIO-485
With the 5 position shunt in the SIO-485 mode the ULTRA-485 supports the following pin out list.
EIA-530
E4
SIO-485
Figure 8: Dip-shunt E4 (SIO-485 Mode)
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Chapter1: Installation
ManualNumber:000750-006-5 Page9
RS-530 / 422 / 485 Line Termination
Typically, each end of the RS-530/422/485 bus must have line terminating resistors. A 100 ohm
resistor is across each RS-530/422/485 input in addition to a 1K ohm pull-up/pull-down combination
that bias the receiver inputs. Dip-switch SW2 allows the user to customize this interface to their
specific requirements. Each switch corresponds to a specific portion of the interface. If multiple
ULTRA-485 adapters are configured in a network, only the boards on each end should have switches
1, 2 & 3 ON. Refer to the following table for each switch‘s operation:
Name Function
TAdds or removes the 100 ohm termination. Switch 1 ON adds the
termination and OFF removes the terminations
PAdds or removes the 1K ohm pull-up resistor in the RS-422/RS-485
receiver circuit (Receive data only). Switch 2 ON adds the 1K
pull-up resistor and OFF removes the pull-up resistor.
PAdds or removes the 1K pull-down resistor in the RS-422/RS-485
receiver circuit (Receive data only). Switch 3 ON adds the 1K
pull-down resistor and OFF removes the pull-down resistor.
LConnects the TX+ to RX+ for RS-485 two wire operation.
LConnects the TX- to RX- for RS-485 two wire operation.
Figure 9: SW-2, Line Termination

ManualNumber:00750-006-5Page10
ULTRA-485Manual
Chapter 3: Installation
Software Installation
Windows 95/98/2000/ME
Install the software before installing the hardware as follows:
1. Insert the I/O and Communication Software “C” Series CD into your CD-ROM drive.
2. Go to the SeaCOM directory and click on Install to install the SeaCOM software to your
system.
Windows NT
Install the software before installing the hardware as follows:
1. Insert the I/O and Communication Software “C” Series CD into your CD-ROM drive.
2. Go to the SeaCOM directory and click on Install to install the SeaCOM software to your
system.
3. Install the board into an ISA expansion slot.
4. Go to Start > Settings > Control Panel and open the Advanced Ports control panel to
configure the card for Windows NT.
After installing the software for your new adapter card please choose Launch Help File. After
the help file comes up, choose the type of adapter that you have, i.e., ISA (Legacy), PCI, PCMCIA.
From there the help file will give you step by step instructions on the installation of your card type.
Please read the help file before installing your adapter. Most all questions you may have about
installation will be covered there.
Linux
Please refer to the Linux subdirectory on your supplied software for up-to-date instructions for
variousLinux installations. This is usuallyfound onthe Disk3 orOther subdirectoryof theSeaCOM
directory.
QNX
Please refer to the QNX subdirectory on your supplied software for up-to-date instructions for
various QNX installations. This is usually found on the Disk3or Other subdirectory of the SeaCOM
directory.

Chapter1: Installation
ManualNumber:000750-006-5 Page11
Hardware Installation
The ULTRA-485 can be installed in any 16-bit PC expansion slot. The ULTRA-485 contains several
jumper straps for each port that must be set for proper operation.
1. Turn off PC power. Disconnect the power cord.
2. Remove the PC case cover.
3. Locate an available slot and remove the blank metal slot cover.
4. Gently insert the ULRA-485 into the slot. Make sure that the adapter is seated
properly.
5. Replace the screw.
7. Replace the cover.
8. Connect the power cord.
Installation is complete.

ManualNumber:00750-006-5Page12
ULTRA-485Manual
Chapter 4: Technical Description
The ULTRA-485 utilizes the 16C554 UART. This chip features programmable baud rates, data
format, interrupt control and a 16-byte input and output FIFO. Also available as an option is the
16C854 UART that provides a 128-byte FIFO and enhanced clocking features.
The unique feature of the ULTRA-485 is the ability to be RS-485 compatible without the need for
specialsoftware or drivers.This isespecially useful inWindows,WindowsNT, andOS/2environments
where the lower level I/O control is abstracted from the application program. Which means that the
user can effectively use the ULTRA-485 in a RS-485 application with existing (i.e. standard
RS-232) software drivers.
Features Include
· Addressable as COM1: thru COM4: or twelve other pre-selected address options
· Automatic RS-485 driver enable/disable allows card to appear to be standard COM: port
requiringno additional drivers
· ‘PAL’option allows for unique OEM address selection
· ‘Shareable’ IRQs allow more than one port to share a single IRQ provided a polling type
driver is used
· IRQs 2/9-7, 10, 11, 12, 14, 15 supported
· 16C554 and 16C854 buffered UART standard models
· 16 -bit address decode allows for easier integration

Chapter1: Installation
ManualNumber:000750-006-5 Page13
Chapter 5: Specifications
Environmental Specifications
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Manufacturing Specifications
Boards are built to U.L. 94V0 rating and are 100% Electrically tested. Boards are solder mask over
bare copper or solder mask over tin nickel.
Power Consumption
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Mean Time Between Failure
Greater than 150,000 hours. (Calculated)
Physical Dimensions
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