Connect Tech Xtreme/104 Plus User manual

Xtreme/104 Plus, PCI-104
and PCI/104 Express Family
User Manual
Connect Tech Inc.
42 Arrow Road
Guelph, Ontario
N1K 1S6
Tel: [phone]
Toll: 800-426-8979 (North America only)
Fax: [phone]
Email: [e-mail]
[email protected]
Web: www.connecttech.com
CTIM-00029 Revision 0.09 February 15, 2011

Connect Tech Xtreme/104-Plus, PCI-104 and PCI/104 Express Family User Manual
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1 Limited Lifetime Warranty
Connect Tech Inc. provides a lifetime warranty for all of our products. Should this product, in
Connect Tech Inc.‟s opinion, fail to be in good working order during the warranty period,
Connect Tech Inc. will, at our option, repair or replace this product at no charge, provided that
the product has not been subjected to abuse, misuse, accident, disaster or non Connect Tech Inc.
authorized modification or repair.
You may obtain warranty service by delivering this product to an authorized Connect Tech Inc.
business partner or directly to Connect Tech Inc. along with proof of purchase. Product returned
to Connect Tech Inc. must be pre-authorized by Connect Tech Inc. with an RMA (Return
Material Authorization) number marked on the outside of the package and sent prepaid, insured
and packaged for safe shipment. Connect Tech Inc. will return this product by prepaid ground
shipment service.
The Connect Tech Inc. lifetime warranty is defined as the serviceable life of the product. This is
defined as the period during which all components are available. Should the product prove to be
irreparable, Connect Tech Inc. reserves the right to substitute an equivalent product if available
or to retract lifetime warranty if no replacement is available.
The above warranty is the only warranty authorized by Connect Tech Inc. Under no
circumstances will Connect Tech Inc. be liable in any way for any damages, including any lost
profits, lost savings or other incidental or consequential damages arising out of the use of, or
inability to use, such product.
2 Copyright Notice
The information contained in this document is subject to change without notice. Connect Tech
Inc. shall not be liable for errors contained herein or for incidental consequential damages in
connection with the furnishing, performance, or use of this material. This document contains
proprietary information that is protected by copyright. All rights are reserved. No part of this
document may be photocopied, reproduced, or translated to another language without the prior
written consent of Connect Tech Inc.
Copyright 1997 - 2011 by Connect Tech Inc.
3 Trademark Acknowledgment
Connect Tech Inc. acknowledges all trademarks, registered trademarks and/or copyrights
referred to in this document as the property of their respective owners.
Not listing all possible trademarks or copyright acknowledgments does not constitute a lack of
acknowledgment to the rightful owners of the trademarks and copyrights mentioned in this
document.

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4 Table of Contents
1Limited Lifetime Warranty ............................................................................................................................... 2
2Copyright Notice............................................................................................................................................... 2
3Trademark Acknowledgment............................................................................................................................ 2
4Table of Contents.............................................................................................................................................. 3
4.1 List of Figures .......................................................................................................................4
4.2 List of Tables.........................................................................................................................4
5Customer Support Overview............................................................................................................................. 6
6Contact Information.......................................................................................................................................... 6
7Conventions used in this manual....................................................................................................................... 6
8Introduction....................................................................................................................................................... 7
8.1 Features................................................................................................................................7
8.1.1 Xtreme/104-Plus................................................................................................................ 7
8.1.2 Xtreme/104-Plus Opto....................................................................................................... 8
8.1.3 Xtreme/104-Express Opto.................................................................................................. 8
8.1.4 Xtreme/PCI-104 12 Port Opto........................................................................................... 9
9Xtreme/104-Plus Diagrams..............................................................................................................................10
10 Xtreme/104 Express Diagrams.........................................................................................................................15
11 Xtreme/PCI104 12 Port Opto Diagrams...........................................................................................................16
12 Xtreme/104 Installation Overview...................................................................................................................17
13 Hardware Installation.......................................................................................................................................17
13.1 ESD Warning ......................................................................................................................17
13.2 Installing Xtreme/104-Plus or Xtreme/104PCI Cards Into Your System .....................................17
14 Hardware Configuration...................................................................................................................................18
14.1 Interrupts and Memory Address Selection...............................................................................18
14.2 Xtreme/104 Plus and Xtreme/PCI-104 ID Selection.................................................................18
14.2.1 Xtreme/104 Plus ID Selection Using the Rotary Switch...................................................18
14.2.2 Xtreme/104 Plus and /PCI-104 ID Selection Using the Jumper Block.............................19
15 Electrical Interfaces Xtreme/104 Plus and Express (RS-232/422/485 and RS-423 Models) ...........................20
15.1 RS-232 Electrical Interface...................................................................................................20
15.2 RS-422/485 Electrical Interface.............................................................................................20
15.2.1 Full Duplex 4-Wire Mode.................................................................................................20
15.2.2 Half Duplex 2-Wire Mode ................................................................................................20
15.2.3 Multi-drop 4-Wire Mode ..................................................................................................20
15.2.4 Line Bias and Termination ...............................................................................................20
15.3 Jumper Block Settings ..........................................................................................................21
15.3.1 Four and Eight Port Xtreme/104 Plus models..................................................................21
15.3.2 Sixteen Port Xtreme/104 Plus models...............................................................................21
15.3.3 Jumper Details .................................................................................................................22
15.4 Power-on RS485 Tri-state for multidrop networks...................................................................23
15.4.1 Xtreme/104-Plus Opto and Xtreme/104 Express Opto models:........................................23
15.4.2 16 Port Models.................................................................................................................23
16 Electrical Interfaces (RS-232/422/485/TTL Models).......................................................................................24
16.1 RS-232/TTL Electrical Interface............................................................................................24
16.2 RS-422/485 Electrical Interface.............................................................................................24
16.3 Jumper Block Settings ..........................................................................................................24
17 Electrical Interfaces Xtreme/PCI-104 12 Port Opto.........................................................................................26
17.1 I/O Port Power for the Xtreme/PCI-104 Opto 12 Port .............................................................26
17.2 Line Modes .........................................................................................................................26
17.2.1 Low Power Shutdown.......................................................................................................26
17.2.2 RS-232 Electrical Interface ..............................................................................................26
17.2.3 Full Duplex 4-Wire RS485 ...............................................................................................26
17.2.4 Multi-drop 4-WireRS485..................................................................................................26
17.2.5 Half Duplex 2-Wire RS485...............................................................................................26
17.2.6 Line Bias/Termination......................................................................................................27
17.3 Jumper Block and Mode Settings for 12 Port Opto ..................................................................27
17.4 Bias and Termination Resistors.............................................................................................27
17.5 Line Interface Mode Jumpers for Xtreme/PCI-104 Opto 12 Port...............................................28
17.6 Power-on Tri-state for Xtreme/PCI-104 Opto 12 Port..............................................................28
18 Driver Software Configuration.........................................................................................................................29

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18.1 Driver Installation ...............................................................................................................29
18.2 RS-485 Multidrop 2 and 4 wire configuration.........................................................................29
19 Connectors/Pinouts ..........................................................................................................................................30
19.1 40 Pin Connector Pin Numbering..........................................................................................30
19.2 80 Pin Connector Pin Numbering..........................................................................................30
19.3 Xtreme/104 Plus RS423........................................................................................................31
19.4 Xtreme/104 Plus RS-232/422/485 ..........................................................................................32
19.5 Xtreme/104 Plus 16 Port.......................................................................................................33
19.6 Xtreme/104 Plus Opto 2 & 4 Port, Xtreme/104-Express Opto 8 Port.........................................34
19.7 Xtreme/PCI-104 Opto 12 Port..............................................................................................35
20 Cable Pinouts ...................................................................................................................................................36
20.1 Single, Quad and Octal cables ..............................................................................................36
20.2 Xtreme/PCI-104 12 Port Opto...............................................................................................36
20.3 Xtreme/104 Plus RS232/485/TTL model .................................................................................37
21 Wiring Examples..............................................................................................................................................38
21.1 RS232 Wiring Example.........................................................................................................38
21.2 RS423 Wiring Example.........................................................................................................38
21.3 RS-422/485 Wiring Examples................................................................................................39
22 Specifications...................................................................................................................................................40
22.1 Operating Environment ........................................................................................................40
22.2 Power Requirements ............................................................................................................40
22.3 PC/104 Bus Interface ...........................................................................................................40
22.4 PCIe/104 Bus Interface.........................................................................................................40
22.5 PCI-104..............................................................................................................................40
22.6 Dimensions .........................................................................................................................40
22.7 Communications..................................................................................................................41
22.7.1 Baud Rates most models:..................................................................................................41
22.7.2 UARTs ..............................................................................................................................41
22.7.3 Control Signals.................................................................................................................41
22.8 Certification........................................................................................................................42
23 Part Numbers ...................................................................................................................................................42
4.1 List of Figures
Figure 1: Xtreme/104-Plus RS-232/422/485 4 and 8 port models hardware components............................10
Figure 2: Xtreme/104-Plus RS-423 Model Hardware Components..............................................................11
Figure 3: Xtreme/104-Plus RS-232/422/485/TTL Models.............................................................................12
Figure 4: Xtreme/104-Plus Opto RS-232/422/485 Hardware Components (4 Port Model).........................13
Figure 5: Xtreme/104-Plus 16 Port RS-232/422/485 Hardware Components..............................................14
Figure 6: Xtreme/104-Express Opto 4 and 8 port Hardware Components...................................................15
Figure 7: Xtreme/PCI104-Opto 12 Port Hardware Components .................................................................16
Figure 8: Rotary Switch ID Selection............................................................................................................18
Figure 9: Jumper Settings for ID Selection...................................................................................................19
Figure 10: Example of Various Jumper Block Settings for RS-232/422/485 Models....................................21
Figure 11: Example of Various Jumper Block Settings for RS-232/422/485 Models....................................21
Figure 12: Examples of Various Jumper Block Settings for RS-232/422/485/TTL Models ..........................24
Figure 13: Examples of Various Jumper Block Settings for the 12 Port Opto model ...................................27
Figure 14: 40 Pin Connector: Pin Numbering..............................................................................................30
Figure 15: 80 Pin Connector: Pin Numbering..............................................................................................30
Figure 16: RS-232 Wiring Diagram..............................................................................................................38
Figure 17: RS-423 Wiring Diagram..............................................................................................................38
Figure 18: RS-422/485 Wiring Diagram (4 Wire) ........................................................................................39
Figure 19: RS-422/485 Wiring Diagram (4 Wire Multidrop) .......................................................................39
Figure 20: RS-422/485 Wiring Diagram (2 Wire) ........................................................................................39
4.2 List of Tables
Table 1: I/O Signal Assignments for RS-423 Models ....................................................................................31
Table 2: I/O Signal Assignments for RS-232/422/485 Models).....................................................................32
Table 3: I/O Signal Assignments for 16 Port model......................................................................................33

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Table 4: 10 Pin R/A Port Header Pinouts on Opto Models .........................................................................34
Table 5: 10 Pin R/A Port Header Pinouts on 12 Port Opto Models .............................................................35
Table 6: DB-9 Male Cable Pinouts...............................................................................................................36
Table 7: CBG067 DB-9 Male Cable Pinouts for 12 Port Opto model..........................................................36
Table 8: RS-232/TTL Px1 Right Angled Header Pinouts (CAG104 Compatible).........................................37
Table 9: RS-485 Px2 Vertical Header Pinouts..............................................................................................37
Table 10: Multipurpose I/O (MPIO) Header Pinout (Direct Connection to UART).....................................37

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5 Customer Support Overview
If you experience difficulties after reading the manual and/or using the product, contact the
Connect Tech Inc. reseller from which you purchased the product. In most cases the reseller can
help you with product installation and difficulties.
In the event that the reseller is unable to resolve your problem, our highly qualified support staff
can assist you. Our support section is available 24 hours a day, 7 days a week on our website at:
www.connecttech.com/sub/support/support.asp. See the contact information section below for
more information on how to contact us directly. Our technical support is always free.
6 Contact Information
We offer three ways for you to contact us:
Mail/Courier
You may contact us by letter at: Connect Tech Inc.
Technical Support
42 Arrow Road, Guelph, ON
Canada N1K 1S6
Email/Internet
You may contact us through the Internet. Our email and URL addresses on the Internet are:
[email protected]m
[email protected]m
www.connecttech.com
Note:
Please go to the Download Zone or the Knowledge Database in the Support Center on the
Connect Tech Inc. website for product manuals, installation guides, device driver software and
technical tips.
Submit your technical support questions to our customer support engineers via the Support
Center on the Connect Tech Inc. website.
Telephone/Facsimile
Technical Support representatives are ready to answer your call Monday through Friday, from
8:30 a.m. to 5:00 p.m. Eastern Standard Time. Our numbers for calls are:
Telephone: [phone] (North America only)
Telephone: [phone] (Live assistance available 8:30 a.m. to 5:00 p.m. EST, Monday to
Friday)
Facsimile: 519-836-4878 (online 24 hours)
7 Conventions used in this manual
This manual uses the following conventions:
When referring to the entire family of products Xtreme/104 Plus, Xtreme/PCI-104,
Xtreme/104 Express and Xtreme/104 Plus Opto are abbreviated to Xtreme/104.
Special or important tips are formatted with a Green Background.

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8 Introduction
Connect Tech's Xtreme/104-Plus, 104-PCI and 104/Express family combines the best of the
Universal PCI bus with the rugged and compact form factor of PC/104.
The various models are PCI 2.0, PC/104-Plus 2.0 or PCIe/104 compliant. The modular
Xtreme/104-Plus and Xtreme/104-Plus Opto cards include a PC/104 pass-through connector
option for compatibility with legacy PC/104 cards.
The Xtreme/104 family offer independent port configuration for baud rate, and data bit options
of 5, 6, 7 and 8, as well as, 1, 1.5 and 2 stop bits. Select between odd and even parity. The
Xtreme/104 Express offers a fractional baud rate generator which allows almost any baud rate to
be selected as well as a 9 bit addressing mode.
Connect Tech‟s Xtreme/104-Plus and Express cards are perfect for embedded applications such
as, industrial PCs, kiosks, military systems, aerospace, medical systems, POS devices and any
system requiring fast data transfer speeds and a rugged, compact form factor. These self-stacking
cards are low on power consumption and function in industrial temperature conditions.
8.1 Features
8.1.1 Xtreme/104-Plus
Universal PC/104-Plus adapter
o16 Port models require 5V power.
PCI 2.0 and PC/104-Plus compliant
2 port model: 2 ports RS-423
4 port models: 4 ports RS-423 or 4 ports jumper selectable RS-232/422/485
8 port models: 8 ports jumper selectable RS-232/422/485, TTL model as well
16 port models: 16 ports jumper selectable RS-232/422/485
TTL model has the ability to disable ports when not in use
Maximum data rates of 115.2 Kbps (RS-423), 921.6 Kbps (RS-232/TTL) and 1.8432 Mbps
(RS-422/485)
o16 port model maximum data rates are 1Mbps RS-232 and 4.16Mbps RS-422/485
Operating temperature range of -40ºC to 85ºC
Each port can be configured independently for baud rate, parity, data and stop bits
High performance PCI UARTs
PC/104 pass-through connectors installed for compatibility with legacy PC/104 cards on
select models
Software support for Windows 2000/XP/Server/Vista/7,Windows CE5, QNX 4, QNX6,
Linux. Contact sales or support for most recent list and model compatibility.
Available signals
RS-423 Model:
RS-423: TxD-, TxDRef, RxD+/-, RTS-, RTSRef, CTS+/-
RS-232/422/485 Models:
RS-232: TxD, RxD, RTS, CTS, RI, DTR, DSR, DCD and Signal Ground (SG)
RS-422/485: TxD+/-, RxD+/-, RTS+/-, CTS+/- and Signal Return (SR)
RS-232/422/485/TTL Models:
RS-232/TTL: TxD, RxD, RTS, CTS, RI, DTR, DSR, DCD, Signal Ground
(SG), +5V
RS-422/485: TxD+/-, RxD+/- and Signal Reference (SR)
Multilayer PCB built with EMI reduction techniques
Built with low power CMOS components

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8.1.2 Xtreme/104-Plus Opto
Universal PC/104-Plus adapter
PCI 2.0 and PC/104-Plus compliant
2 or 4 ports jumper selectable for RS-232/422/485
Supports full duplex, half duplex and multi-drop communication modes in RS-422/485
Maximum data rates of 921.6 Kbps (RS-232) and 1.8432 Mbps (RS-422/485)
Operating temperature range of -40ºC to 85ºC
Each port can be configured independently for baud rate, parity, data and stop bits
High performance PCI UARTs
3kV DC (2.12kV AC RMS) of optical isolation
PC/104 pass-through connectors installed for compatibility with legacy PC/104 cards
Software support for Windows 2000/XP/Server/Vista/7, QNX 4, QNX6, Linux and VxWorks.
Contact sales or support for most recent list and model compatibility.
Available signals
RS-232: TxD, RxD, RTS, CTS and Signal Ground (SG)
RS-422/485: TxD+/-, RxD+/-, RTS+/-, CTS+/- and Signal Reference (SR)
Multilayer PCB built with EMI reduction techniques
Built with low power CMOS components
8.1.3 Xtreme/104-Express Opto
PCIe/104 Version 1.1 compliant.
4 or 8 port models with jumper selectable for RS-232/422/485
Supports full duplex, half duplex and multi-drop communication modes in RS-422/485
Maximum data rates of 921.6 Kbps (RS-232) and 7.812Mbps +/-1.5% (RS-422/485) with
16x baud clock.
Fractional Baud rate generator that can generate just about any baud rate with less than 1%
error. Common baud rates like 1200, 9600, 19200, 57600, 230400 etc typically have less than
0.1% error.
256 byte RX and TX FIFO buffers, improve performance and eliminate lost receive data
Operating temperature range of -40ºC to 85ºC
Each port can be configured independently for baud rate, parity, data and stop bits
High performance PCI-Express four or eight port UART
3kV DC (2.12kV AC RMS) optical isolation
Software support for Windows XP/Vista/7, more support coming soon.
Available signals
RS-232: TxD, RxD, RTS, CTS and Signal Ground (SG)
RS-422/485: TxD+/-, RxD+/-, RTS+/-, CTS+/- and Signal Reference (SR)
Multilayer PCB built with EMI reduction techniques
Built with low power CMOS components

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8.1.4 Xtreme/PCI-104 12 Port Opto
PCI-104 Version 1.0 compliant
Highest port density isolated serial board on the market!
12 ports with jumper selectable for RS-232/422/485
Supports full duplex, half duplex and multi-drop communication modes in RS-422/485
Maximum data rates of 921.6 Kbps (RS-232) and 4.166Mbps (RS-422/485) with 8x baud
clock.
Fractional Baud rate generator that can generate just about any baud rate with less than 1%
error. Common baud rates like 1200, 9600, 19200, 57600, 230400 etc typically have less than
0.1% error.
64 byte RX and TX FIFO buffers, improve performance and eliminate lost receive data
Operating temperature range of -40ºC to 85ºC
Each port can be configured independently for baud rate, parity, data and stop bits
High performance UARTs on each port.
1kV AC RMS optical isolation
Software support for Windows 2000/XP/Server/Vista/7, QNX 4, QNX6, Linux. Contact sales
or support for most recent list and model compatibility.
Available signals
RS-232: TxD, RxD, RTS, CTS and Signal Ground (SG)
RS-422/485: TxD+/-, RxD+/-, RTS+/-, CTS+/- and Signal Reference (SR)
Multilayer PCB built with EMI reduction techniques
Built with low power CMOS components
Features locking connector on DB9M I/O cable to prevent accidental removal in applications
prone to vibration.
Built with low power components. Each port features a low power shutdown mode if port is
not used.

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9 Xtreme/104-Plus Diagrams
Figure 1: Xtreme/104-Plus RS-232/422/485 4 and 8 port models hardware components

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Figure 2: Xtreme/104-Plus RS-423 Model Hardware Components

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Figure 3: Xtreme/104-Plus RS-232/422/485/TTL Models

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Note: Configuration information for the RS-232/422/485/TTL model,
including jumper settings and pinouts, is located in Electrical Interfaces
(RS-232/422/485/TTL models).
Figure 4: Xtreme/104-Plus Opto RS-232/422/485 Hardware Components (4 Port Model)

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Figure 5: Xtreme/104-Plus 16 Port RS-232/422/485 Hardware Components

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10 Xtreme/104 Express Diagrams
P1
P2
P3
P4
P5
P6
P7
P8
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13 J14 J15
J16
J17 J19
Port I/O connectors
2x5 R/A headers
Line Interface
selection jumpers
Ports 1-4 Ports 5-8
RS485 control jumpers
PCI/104 Express Connector
P10
Figure 6: Xtreme/104-Express Opto 4 and 8 port Hardware Components

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11 Xtreme/PCI104 12 Port Opto Diagrams
Port1
Port6Port7
Port12
J1.1
J1.2
J2.1
J2.2
J3.1
J3.2
J4.1
J4.2
J5.1
J5.2
J6.1
J6.2J7.2
J7.1
J8.1 J8.2
J9.1 J9.2
J10.2
J10.1
J12.1
J12.2
J11.1
J12.2
FE DCBA
AB AB
AB CDE F
G-485 P-9-12 P-5-8 P-1-4
Figure 7: Xtreme/PCI104-Opto 12 Port Hardware Components

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12 Xtreme/104 Installation Overview
Before you begin, take a moment to ensure your package includes the components shipped with
your product. These components should include:
One Xtreme/104 adapter
One CD containing software and documentation
DB-9 male fan-out cable or DB9 male cables (optional)
If any of these components are missing, contact Connect Tech (see more Contact Details) or
your reseller.
There are three stages to installing your Xtreme/104:
1. Hardware Configuration
Interrupts and Memory selection will be set by the host computer‟s BIOS. This section
outlines jumper settings and the ID selection process.
2. Hardware Installation
Installation involves the physical connection of the Xtreme/104-Plus or Xtreme/104
Express within your computer‟s PC/104-Plus stack. (Please note that you should
configure any jumper settings, such as ID or electrical interface, if required, prior to
installing the board.)
3. Software/driver installation
Load the appropriate driver for your Operating System, as found on the accompanying
CD. Installation guides are also available on the CD to aid you in this process.
13 Hardware Installation
13.1 ESD Warning
Electronic components and circuits are sensitive to ElectroStatic Discharge (ESD). When handling
any circuit boards including Connect Tech PC/104 boards, it is recommended that ESD safety
precautions be observed. ESD safe best practices include, but are not limited to:
Leaving circuit boards in their antistatic packaging until they are ready to be installed.
Using a grounded wrist strap when handling circuit boards, at a minimum you should
touch a grounded metal object to dissipate any static charge that may be present on you.
Only handling circuit boards in ESD safe areas, which may include ESD floor and table
mats, wrist strap stations and ESD safe lab coats.
Avoiding handling circuit boards in carpeted areas.
Try to handle the board by the edges, avoiding contact with components.
13.2 Installing Xtreme/104-Plus or Xtreme/104PCI Cards Into Your System
Turn off the power to your system and open it to expose the PC/104 stack. Choose an available
position in the PCIe/104 or PC/104-Plus stack, and set the ID jumpers or rotary switch
accordingly (see ID Selection). Insert the Xtreme/104-Plus or Xtreme/104 Express adapter and
reassemble the stack.

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14 Hardware Configuration
14.1 Interrupts and Memory Address Selection
Xtreme/104 boards are PCI and PCI Express cards, so the host computer‟s BIOS or Operating
System will automatically set interrupts and memory addresses when you reboot after
installation.
14.2 Xtreme/104 Plus and Xtreme/PCI-104 ID Selection
Up to four PC/104-Plus or PCI-104 boards can reside within a single PC/104 module stack. Each
card within the stack must have a unique ID ranging from zero to three.
(this section does not apply to PCIe/104 cards )
Depending on the model of your Xtreme/104-Plus adapter, you will
be required to set either a pair of jumpers or a rotary switch to
specify where your card is located within the stack. (Ensure that no
two boards share an ID number.)
In systems designed prior to the PC/104-Plus 2.0 specification, the fourth ID was reserved for
target only devices and did not support bus mastering. Since the Xtreme/104-Plus is not a bus
mastering device, we would recommend an assignment of ID 3. This leaves three of the IDs in
the PC/104-Plus stack available for bus mastering devices.
In systems designed post PC/104-Plus 2.0 specification, all four IDs support bus mastering, so
there is no advantage to setting the Xtreme/104-Plus ID to 3. Regardless of which PC/104-Plus
specification version the system is using, , the Xtreme/104-Plus will work with any ID selected
as long as no other device in the system is using the same ID.
14.2.1 Xtreme/104 Plus ID Selection Using the Rotary Switch
If your Xtreme/104-Plus or Xtreme/104-Plus Opto is equipped with a rotary switch, turn the
knob on the switch so that the arrow points at the ID you would like to use. (See Figure 6 for the
location of the rotary switch on the board). Use the following settings to set your adapter‟s
location (or ID) within the stack:
Figure 8: Rotary Switch ID Selection
Module Slot
Switch Position
1
0 or 4
2
1 or 5
3
2 or 6
4
3 or 7
CPU
0
1
2
3

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14.2.2 Xtreme/104 Plus and /PCI-104 ID Selection Using the Jumper Block
If your Xtreme/104-Plus or Xtreme/PCI-104 card is equipped with a jumper block for ID
selection, set your board‟s location by changing jumper positions. Figure 7 depicts the jumper
settings required for each ID.
The jumpers remain unpopulated for an ID of zero. Populate the left jumper for an ID of one, the
right jumper for an ID of two or populate both for an ID of three.
Figure 9: Jumper Settings for ID Selection

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15 Electrical Interfaces Xtreme/104 Plus and Express
(RS-232/422/485 and RS-423 Models)
15.1 RS-232 Electrical Interface
This is the default setting for the interface selectable Xtreme/104-Plus and Xtreme/104-Plus
Opto. To operate a port in RS-232 mode, no jumpers are set on the corresponding jumper block.
15.2 RS-422/485 Electrical Interface
Xtreme/104 Express, Xtreme/104-Plus and Xtreme/104-Plus Opto RS-232/422/485 adapters
support three modes of RS-422/485 communication, as outlined below. (See Figure 8 to see
examples of jumper settings.)
15.2.1 Full Duplex 4-Wire Mode
In this mode, TxD+/- and RxD+/- are being driven to a known level all the time. This mode is
typically used in point-to-point situations much like RS-232. This is sometimes called RS-422
mode.
15.2.2 Half Duplex 2-Wire Mode
In Half Duplex 2-wire mode during transmission the TxD+/- line driver is enabled and the
RxD+/- is disabled. When the not transmitting, the TxD+/- is disabled and the RxD+/- is
enabled. The TxD+/- is disabled by tri-stating the output driver pins.
This mode is used in both point-to-point 2-wire connections and in multi-drop 2-wire bus type
connections. Special software setup is required so that the Xtreme/104 hardware automatically
performs the TxD and RxD enabled and disabling.
See the Driver Software Configuration section for software setup.
15.2.3 Multi-drop 4-Wire Mode
In this mode the TxD+/- line driver is enabled only when data is transmitted and RxD+/- is
enabled all of the time. This mode is used in multi-drop 4-wire connections. This mode is also
called “Multi-drop” slave.
See the Driver Software Configuration section for software setup.
15.2.4 Line Bias and Termination
The RS-422/485 transceivers, both transmit and receive can be optionally biased to produce a
line level mark condition through jumper selectable resistors. These options are typically used
in multi-drop 4-wire and 2-wire connections.
The RxD+/- features a combined Bias and Termination network.
The TxD+/- feature a single Termination resistor.
See the Jumper Block settings in the next section for more details.