Advantech PCI-1784 specifications Introduction, Features, Encoder Interface

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1. Introduction

Thank you for buying the Advantech PCI-1784. The PCI-1784 is a 4- axis quadrature encoder and counter card for PCI bus. This card includes four 32-bit quadruple AB phase encoder counters, 8-bit timer with multi range time-base selector and four isolated digital input and four isolated digital output. Its flexible interrupt sources are suitable for motor control and position monitoring.

The following sections of this chapter will provide further information about features of the multifunction cards, a Quick Start for installation, together with some brief information on software and accessories for the PCI-1784 card.

1.1Features

❏Four 32-bit up/down counters

❏Single ended or differential inputs

❏Pulse/direction and up/down counter

❏x1, x2, x4 counts for each encoder cycle

❏Optically isolated up to 2500 VDC

❏4-stage digital filter with selectable sampling rate

❏On board 8-bit timer with wide range time-base selector

❏Multiple interrupt sources for precision application

❏Four isolated digital input

❏Four isolated digital output with flexible function

❏Board ID

The Advantech PCI-1784 offers the following main features:

Encoder Interface

Each channel includes a decoding circuit for incremental quadrature encoding. Inputs accept either single-ended or differential signals. Quadrature input works with or without an index, allowing linear or rotary encoder feedback.

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Contents Page Page Contents Appendix D. Operation Encoder Interface FeaturesIntroduction Digital Input and Interrupts CountersFlexible Digital Output function Special Shielded Cable for Noise ReductionBoard ID Applications Installation GuideInstallation Flow Chart Register-level Programming Software OverviewDevice Drivers Programming Tools Device Drivers Programming RoadmapProgramming with Device Drivers Function Library Troubleshooting Device Drivers ErrorWiring Boards AccessoriesWiring Cable Unpacking InstallationPage Setup Screen of Advantech Automation Software Driver InstallationSelect the Individual Drivers option Hardware InstallationPage Device name listed on the Device Manager Board selection Device Setup & Configuration‘Setup’ dialog box Setting Up and configure the deviceOperation dialog box Switch and Jumper Settings Signal ConnectionsOverview Names of Jumpers Function descriptionBoard ID setting SW1 Pin Assignment Signal ConnectionsConnector Signal Description Single ended Outputs Encoder Quadrature encoder inputQuadrature encoder up/down counter input connections Isolated digital output Isolated digital inputEncoder Output Appendix A. SpecificationsTimer General InterruptCounter Latch ADDRESS, Control and Data BUS Appendix B. Block DiagramPage I/O Port Address Map Appendix C. Register Structure and Format+ HEX Table C-1 PCI-1784 register format Part1CH Clock Control Table C-2 PCI-1784 Register for counter 0/1/2/3 mode Counter 0/1/2/3 mode BASE+00/04/08/0CHDI0 Table C-3 PCI-1784 Register for counter 0/1/2/3 latch data Counter 0/1/2/3 latch data BASE+00/04/08/0CHTable C-4 PCI-1784 Register for counter 0/1/2/3 compare data Counter 0/1/2/3 compare data BASE+10/14/18/1CHTable C-5 PCI-1784 Register for interrupt control Interrupt control register BASE+20HTable C-6 PCI-1784 Register for interrupt status Interrupt status register BASE+20HTable C-7 PCI-1784 Register for clock control Clear Interrupt BASE+24HTable C-8 PCI-1784 Register for clear interrupt Table C-9 PCI-1784 Register for software latch Software latch BASE+28HTable C-10 PCI-1784 Board ID data Board ID BASE+28HTable C-11 PCI-1784 Register for reset counter Reset counter BASE+2CHTable C-12 PCI-1784 Register for digital output Digital output BASE+30HTable C-13 PCI-1784 Register for digital input/output Digital input/output BASE+30HPage Quadrature encoder introduction Appendix D. OperationQuadrature input counter mode Mode Maximum input rate 8MHz 4MHz 2MHz 1MHzCounter modes Single-ended vs. differential inputPulse/direction mode Pulse modeDisabled mode Digital noise filterClock frequency Maximum width Latch modeLatch Index latchTimer function Counter reset valueInterrupt function