National Instruments SCXI-1160 User manual

© Copyright 1992, 1999 National Instruments Corporation.
All Rights Reserved.
SCXI-1160
User Manual
16-Channel Single-Pole Double-Throw (SPDT) Relay Module
March 1999 Edition
Part Number 320513B-01

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Warranty
The SCXI-1160 is warranted against defects in materials and workmanship for a period of one year from the
date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option,
repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts
and labor.
The media on which you receive National Instruments software are warranted not to fail to execute
programming instructions, due to defects in materials and workmanship, for a period of 90 days from date of
shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or
replace software media that do not execute programming instructions if National Instruments receives notice of
such defects during the warranty period. National Instruments does not warrant that the operation of the
software shall be uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the
outside of the package before any equipment will be accepted for warranty work. National Instruments will pay
the shipping costs of returning to the owner parts which are covered by warranty.
National Instruments believes that the information in this document is accurate. The document has been
carefully reviewed for technical accuracy. In the event that technical or typographical errors exist, National
Instruments reserves the right to make changes to subsequent editions of this document without prior notice to
holders of this edition. The reader should consult National Instruments if errors are suspected. In no event shall
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Instruments installation, operation, or maintenance instructions; ownerís modification of the product; ownerís
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Product and company names mentioned herein are trademarks or trade names of their respective companies.

WARNING REGARDING MEDICAL AND CLINICAL USE OF
NATIONAL INSTRUMENTS PRODUCTS
National Instruments products are not designed with components and testing for a level of reliability suitable
for use in or in connection with surgical implants or as critical components in any life support systems whose
failure to perform can reasonably be expected to cause significant injury to a human. Applications of National
Instruments products involving medical or clinical treatment can create a potential for death or bodily injury
caused by product failure, or by errors on the part of the user or application designer. Because each end-user
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designer may use National Instruments products in combination with other products in a manner not evaluated
or contemplated by National Instruments, the user or application designer is ultimately responsible for
verifying and validating the suitability of National Instruments products whenever National Instruments
products are incorporated in a system or application, including, without limitation, the appropriate design,
process and safety level of such system or application.

© National Instruments Corporation v SCXI-1160 User Manual
Contents
About This Manual ..........................................................................................................xi
Organization of This Manual .......................................................................................xi
Conventions Used in This Manual............................................................................... xii
Related Documentation................................................................................................ xiii
Customer Communication ........................................................................................... xiii
Chapter 1
Introduction ........................................................................................................................1-1
What Your Kit Should Contain.................................................................................... 1-2
Optional Software ........................................................................................................1-2
Optional Equipment .....................................................................................................1-3
Custom Cables ................................................................................................. 1-3
Unpacking .................................................................................................................... 1-4
Chapter 2
Configuration and Installation.....................................................................................2-1
Module Configuration.................................................................................................. 2-1
Jumper Configuration ...................................................................................... 2-5
Jumper W1 ........................................................................................... 2-5
Jumper W5 ........................................................................................... 2-5
Using Jumpers W1 and W5 ................................................................. 2-5
Using Jumpers W2, W3, and W4.........................................................2-7
Hardware Installation...................................................................................................2-7
Signal Connections ......................................................................................................2-8
Front Connector ............................................................................................... 2-9
Front Connector Signal Descriptions...............................................................2-10
Contact Protection for Inductive Load Connections........................................ 2-10
Terminal Block ................................................................................................ 2-12
SCXI-1324 Terminal Block .....................................................2-12
Signal Connection. ......................................................2-13
SCXI-1324 Installation. ...............................................2-15
Rear Signal Connector .....................................................................................2-15
Rear Signal Connector Signal Descriptions.....................................................2-17
Digital I/O Signal Connections ............................................................2-17
Timing Requirements and Communication Protocol....................................... 2-19
Communication Signals ....................................................................... 2-19
Chapter 3
Theory of Operation ........................................................................................................3-1
Functional Overview....................................................................................................3-1
SCXIbus Connector ......................................................................................... 3-2
SCXIbus Connector Signal Descriptions.........................................................3-4
Digital Interface ........................................................................................................... 3-5
Digital Control Circuitry..............................................................................................3-6
Relay Channels ............................................................................................................3-7

SCXI-1160 User Manual vi © National Instruments Corporation
Chapter 4
Register Descriptions ....................................................................................................... 4-1
Register Description..................................................................................................... 4-1
Register Description Format ............................................................................ 4-1
SCXI-1160 Registers ....................................................................................... 4-1
Address Handler ............................................................................................... 4-1
Module ID Register.............................................................................. 4-3
Data Register........................................................................................ 4-4
Status Register......................................................................................4-5
Parking Register...............................................................................................4-6
Slot 0 Register Descriptions............................................................................. 4-7
Slot-Select Register.............................................................................. 4-8
Chapter 5
Programming ......................................................................................................................5-1
Programming Considerations....................................................................................... 5-1
Notation............................................................................................................5-1
Register Writes ................................................................................................. 5-1
Register Selection and Write Procedure ..............................................5-2
Initialization .........................................................................................5-3
Examples......................................................................................................................5-3
Example 1 ........................................................................................................ 5-4
Example 2 ........................................................................................................ 5-4
Example 3 ........................................................................................................ 5-5
Appendix A
Specifications .......................................................................................................................A-1
Contact Ratings ........................................................................................................... A-1
Physical ........................................................................................................................A-2
Operating Environment................................................................................................ A-2
Storage Environment....................................................................................................A-2
Appendix B
Rear Signal Connector ....................................................................................................B-1
Rear Signal Connector Signal Descriptions.....................................................B-2
Appendix C
SCXIbus Connector .........................................................................................................C-1
SCXIbus Connector Signal Descriptions.........................................................C-3
Appendix D
SCXI-1120 Front Connector .........................................................................................D-1
Front Connector Signal Descriptions...............................................................D-2
Appendix E
SCXI-1160 Cabling...........................................................................................................E-1
SCXI-1340 Cable Assembly........................................................................................E-1
SCXI-1340 Installation ....................................................................................E-2
SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC
Cable Assembly ........................................................................................................... E-3

© National Instruments Corporation vii SCXI-1160 User Manual
SCXI-1341 and SCXI-1344 Installation .......................................................... E-4
SCXI-1342 PC-LPM-16 Adapter Board...................................................................... E-5
SCXI-1342 Installation ....................................................................................E-6
DIO-96 Board Connection AT-MIO-16D, and AT-MIO-64F-5 Board Connection...................E-6
SCXI-1351 and NB5 Cable Installation..........................................................E-7
SCXI-1348 DIO-32F Adapter Board...........................................................................E-8
SCXI-1348 Installation ................................................................................................E-10
SCXI-1180 Feedthrough Panel ....................................................................................E-10
SCXI-1180 Installation ....................................................................................E-10
SCXI-1302 50-Pin Terminal Block ............................................................................. E-12
SCXI-1302 Wiring Procedure.......................................................................... E-12
SCXI-1302 Installation ....................................................................................E-13
SCXI-1351 One-Slot Cable Extender .......................................................................... E-13
SCXI-1351 Installation ....................................................................................E-14
Multiple-Chassis Connections for the SCXI-1160 ...................................................... E-14
SCXI-1350 Multichassis Adapter ................................................................................ E-14
SCXI-1350 Installation ....................................................................................E-14
SCXI-1343 Rear Screw Terminal Adapter ..................................................................E-15
SCXI-1343 Installation ....................................................................................E-16
Appendix F
Aromat Relay Technical Data ......................................................................................F-1
Appendix G
Customer Communication.............................................................................................G-1
Glossary .......................................................................................................................Glossary-1
Index ..................................................................................................................................Index-1

SCXI-1160 User Manual viii © National Instruments Corporation
Figures
Figure 1-1. SCXI-1160 Relay Module ............................................................................... 1-1
Figure 2-1. SCXI-1160 General Parts Locator Diagram ....................................................2-2
Figure 2-2. Detailed Parts Locator Diagram....................................................................... 2-3
Figure 2-3. SCXI-1160 Front Connector Pin Assignment .................................................2-9
Figure 2-4. Contact Protection Using a Flyback Diode for DC Inductive Loads...............2-11
Figure 2-5. Arc Suppressor Pad Locations ......................................................................... 2-12
Figure 2-6. SCXI-1324 Parts Locator Diagram.................................................................. 2-14
Figure 2-7. SCXI-1160 Rear Signal Connector Pin Assignment .......................................2-16
Figure 2-8. Slot-Select Timing Diagram ............................................................................ 2-20
Figure 2-9. Serial Data Timing Diagram ............................................................................ 2-21
Figure 2-10. Address Handler Timing Diagram...................................................................2-22
Figure 2-11. Data Register Write Timing Diagram..............................................................2-23
Figure 2-12. SCXI-1160 Module ID Register Timing Diagram .......................................... 2-24
Figure 2-13. SCXI-1160 Status Register Timing Diagram ..................................................2-25
Figure 3-1. SCXI-1160 Block Diagram.............................................................................. 3-1
Figure 3-2. SCXIbus Connector Pin Assignment...............................................................3-3
Figure 3-3. Digital Interface Circuitry Block Diagram ...................................................... 3-5
Figure 3-4. SCXI-1160 Digital Control..............................................................................3-6
Figure B-1. SCXI-1160 Rear Signal Connector Pin Assignment .......................................B-1
Figure C-1. SCXIbus Connector Pin Assignment...............................................................C-2
Figure D-1. SCXI-1160 Front Connector Pin Assignment .................................................D-1
Figure E-1. SCXI-1340 Installation .................................................................................... E-3
Figure E-2. SCXI-1351 and NB5 Cable Installation........................................................... E-8
Figure E-3. SCXI-1180 Rear Connections..........................................................................E-11
Figure E-4. SCXI-1180 Front Panel Installation.................................................................E-12
Figure E-5. SCXI-1350 Cover Removal .............................................................................E-13
Tables
Table 2-1. Digital Signal Connections and Jumper Settings............................................. 2-6
Table 2-2. COM to NO Arc Suppressor Placement ..........................................................2-11
Table 2-3. COM to NC Arc Suppressor Placement .......................................................... 2-12
Table 2-4. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition Board
Pin Equivalences .............................................................................................. 2-19
Table 3-1. SCXIbus Equivalents for the Rear Signal Connector ...................................... 3-5
Table 4-1. Register Addresses...........................................................................................4-2
Table 4-2. Truth Table for Resetting and Setting Relays..................................................4-4
Table 5-1. SCXIbus to SCXI-1160 Rear Signal Connector to Data Acquisition
Board Pin Equivalences ...................................................................................5-2

© National Instruments Corporation ix SCXI-1160 User Manual
Table E-1. SCXI-1160 and Board Pinout Equivalences.................................................... E-2
Table E-2. SCXI-1341 and 1344 Pin Translations ...........................................................E-4
Table E-3. SCXI-1342 Pin Translations ............................................................................E-5
Table E-4. SCXI-1160 and DIO-96 Board Pinout Equivalences ......................................E-7
Table E-5. SCXI-1348 Pin Translations ............................................................................E-9
Table E-6. SCXI-1343 Pin Connections............................................................................ E-15

© National Instruments Corporation xi SCXI-1160 User Manual
About This Manual
This manual describes the electrical and mechanical aspects of the SCXI-1160 and contains
information concerning its operation and programming. The SCXI-1160 is a member of the
National Instruments Signal Conditioning eXtensions for Instrumentation (SCXI) Series modules
for the National Instruments data acquisition plug-in boards. This module is designed for
switching and controlling low-level and power signals. The SCXI-1160 operates as 16 relay
channels. Each channel is isolated and independently configurable.
This manual describes the installation, basic programming considerations, and theory of
operation for the SCXI-1160.
Organization of This Manual
The SCXI-1160 User Manual is organized as follows:
• Chapter 1, Introduction, describes the SCXI-1160; lists the contents of your SCXI-1160 kit;
describes the optional software, optional equipment, and custom cables; and explains how to
unpack the SCXI-1160 kit.
• Chapter 2, Configuration and Installation, describes the SCXI-1160 jumper configurations,
installation of the SCXI-1160 into the SCXI chassis, signal connections to the SCXI-1160,
and cable wiring.
• Chapter 3, Theory of Operation, contains a functional overview of the SCXI-1160 module
and explains the operation of each functional unit making up the SCXI-1160.
• Chapter 4, Register Descriptions, describes in detail the SCXI-1160 Address Handler, the
Module ID Register, the Data Register, the Status Register, and the Slot 0 registers.
• Chapter 5, Programming, contains a functional programming description of the SCXI-1160
and Slot 0.
• Appendix A, Specifications, lists the specifications for the SCXI-1160.
• Appendix B, Rear Signal Connector, describes the pinout and signal names for the
SCXI-1160 50-pin rear signal connector, including a description of each connection.
• Appendix C, SCXIbus Connector, describes the pinout and signal names for the SCXI-1160
96-pin SCXIbus connector, including a description of each connection.
• Appendix D, SCXI-1160 Front Connector, describes the pinout and signal names for the
SCXI-1160 front connector, including a description of each connection.
• Appendix E, SCXI-1160 Cabling, describes how to use and install the hardware accessories
for the SCXI-1160.
• Appendix F, Aromat Relay Technical Data, contains technical data on Aromat Corporation
relays.