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National Instruments 7334, 7344 TriggerInput, Shutdown Input, and Breakpoint Output Circuits

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Chapter5 SignalConnections

©NationalInstruments Corporation 5-11 7344/7334Hardware User Manual

TriggerInput, Shutdown Input, and BreakpointOutput Circuits

Figures 5-5, 5-6, and 5-7 show a simplified schematic diagram of the

circuitsused by the trigger inputs, shutdown inputs, and breakpo int outputs

for signal buffering.

Figure5-5. TriggerInput Circuit

Figure5-6. ShutdownInput Circuit

Figure5-7. BreakpointOutput Circuit

74HC244

Ω

1/8W

Fromthe external

connector

triggerpins

Tothe trigger

circuits

DGND

Vcc

3.3kΩ

74HC244

1kΩ

1/8W

Fromthe external

connector

shutdownpin

Tothe shutdown

circuits

DGND

Vcc

3.3kΩ

74AS760

Tothe external

connector

breakpointpins

Fromthe

breakpoint

circuits

Vcc

3.3kΩ

Contents

Main Page Important Information Warranty Copyright Trademarks WARNINGREGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS Contents Page Glossary Index Figures Tables About This Manual Conventions Related Documentation Introduction About the 7344/7334 Controller Features Hardware RTSI What You Need to Get Started Software Programming Choices National Instruments Application Software Optional Equipment Motion I/O Connections Configuration and Installation Software Installation Controller Configuration Hardware Installation Page Page Hardware Overview Figure3-2. PXI-7344Parts Locator Diagram Figure3-3. FW-7344Back Panel User Connectors Page Functional Overview Dual Processor Architecture Embedded Real-Time Operating System (RTOS) TrajectoryGenerators Analog Feedback Flash Memory Axes and Motion Resources Axes Motion Resources Onboard Programs (7344 only) Host Communications Signal Connections Motion I/O Connector Figure5-1. 68-PinMotion I/O Connector Pin Assignment Table5-1 describes the signals on the motion I/O connector. Table5-1. MotionI/O Signal Connections Motion Axis Signals Limit and Home Inputs Limit and Home Input Circuit Encoder Signals Encoder<1..4> Phase A/Phase B Encoder <1..4> Index Encoder Input Circuit TriggerInputs, Shutdown Input, and Breakpoint Outputs Page TriggerInput, Shutdown Input, and Breakpoint Output Circuits Figure5-7. BreakpointOutput Circuit Figure5-5. TriggerInput Circuit Figure5-6. ShutdownInput Circuit Analog Inputs Other Motion I/O Connections Digital I/O Connector Figure5-8. 68-PinDigital I/O Connector Pin Assignments PWM Features RTSI Connector RTSI Signal Considerations A Specifications Servo Performance (7344 only) Stepper Performance System Safety Motion I/O Page Digital I/O RTSI Power Requirements (Max) Page B Cable Connector Descriptions FigureB-1. 50-Pin Stepper Connector Pin Assignment FigureB-2. 50-PinServo Connector Pin Assignment (7344 only) C Technical Support Resources Web Support NI Developer Zone Customer Education System Integration Worldwide Support Glossary Numbers/Symbols A B C D E F G H I K L M N O P Q R S T V W Index Numbers A B C D E F I L M N O P R S T U W