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Summary of Contents for Advantech iDAQ-784
- Page 1 User Manual iDAQ-784 4-ch, 32-bit, Encoder Counter/ Timer Industrial DAQ Modules...
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Page 2: Product Warranty (2 Years)
No part of this manual may be reproduced, copied, translated, or transmitted in any form or by any means without the prior written permission of Advantech Co., Ltd. The information provided in this manual is intended to be accurate and reliable. -
Page 3: Declaration Of Conformity
This product has passed the CE test for environmental specifications when shielded cables are used for external wiring. We recommend the use of shielded cables. This type of cable is available from Advantech. Please contact your local supplier for ordering information. -
Page 4: Document Feedback
Document Feedback To assist us with improving this manual, we welcome all comments and constructive criticism. Please send all such feedback in writing to support@advantech.com. Packing List Before system installation, check that the items listed below are included and in good condition. - Page 5 In accordance with IEC 704-1:1982 specifications, the sound pressure level at the operator's position does not exceed 70 dB (A). DISCLAIMER: These instructions are provided according to IEC 704-1 standards. Advantech disclaims all responsibility for the accuracy of any statements contained herein. iDAQ-784 User Manual...
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Page 6: Wichtige Sicherheishinweise
Conformément à la norme CEI 704-1:1982, l’opérateur ne doit pas expérimenter un niveau sonore supérieur à 70 dB (A). AVERTISSEMENT: Ces consignes suivent la norme CEI 704-1. Advantech décline toute responsabilité concernant l'exactitude des déclarations contenues dans ce document. - Page 7 Déconnectez l'alimentation avant de modifier la configuration. Une panne sou- daine après le raccordement ou l'installation d'une carte peut endommager les composants électroniques sensibles. iDAQ-784 User Manual...
- Page 8 User Manual viii...
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Page 9: Table Of Contents
Signal Connection and Pin Assignment ............ 7 2.2.1 Pin Assignment ................7 Figure 2.2 Pin assignment of iDAQ-784 ........7 Table 2.1: Description of each pin of iDAQ-784 ......7 2.2.2 Event Counting ................8 Figure 2.3 Event counting signal connection, differential (left), sin- gle end (right) ............. - Page 10 Figure 3.30Pulse width modulation output ......... 27 Figure 3.31Finite pulse generation ..........27 Figure 3.32Infinite pulse generation ........... 27 Figure 3.33Gated pulse width modulation output ....... 27 3.8.1 Static (Software-Timed) PWM Output ........28 Figure 3.34Static (software-timed) timer/pulse......28 iDAQ-784 User Manual...
- Page 11 Counter ....................32 Electric Properties ................... 34 Table A.1: Electric Properties ............ 34 Buffered Acquisition Properties............... 34 Trigger..................... 35 Power Consumption................35 General ....................35 Function Block..................35 Chapter B System Dimensions ......37 iDAQ Modules ..................38 iDAQ-784 User Manual...
- Page 12 User Manual...
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Page 13: Chapter 1 Start Using Idaq-784
Chapter Start Using iDAQ-784... -
Page 14: Product Overview
This chapter provides an overview of Advantech industrial data acquisition (iDAQ) module for iDAQ-784, ranging the product lineups, features, driver, utility and acces- sories. The iDAQ-784 is a 4-ch encoder & counter iDAQ module. It includes four 32- bit encoder counters with programmable trigger output (preload FIFO) for position comparison which is suitable for motor control and position monitoring applications. -
Page 15: Software Utility
All these software packages are available on the Advantech website: http://www.advantech.com/. The Advantech Navigator is a utility that allows you to set up, configure and test your device, and later stores your settings in a proprietary database. -
Page 16: Fpga Code Update
FPGA Code Update The FPGA can also be updated via the interface in Navigator. However, it isn’t normal to make an FPGA update. Advantech strongly suggests you to consult your technical support before starting an FPGA update process. Ordering Information... -
Page 17: Chapter 2 Installation And Field Application
Chapter Installation and Field Application... -
Page 18: Installation
Below are the steps to insert the iDAQ modules into the iDAQ chassis. Insert the module and follow the guide rail to the end. Fix the two screws tight onto the chassis. Figure 2.1 Installing iDAQ modules into the iDAQ chassis iDAQ-784 User Manual... -
Page 19: Signal Connection And Pin Assignment
Signal Connection and Pin Assignment iDAQ-784 has four general-purpose 32-bit counter/timers and one frequency genera- tor. The general-purpose counter/timers can be used for many measurement and pulse generation applications. The signal connection for each function are described in the following sections. -
Page 20: Event Counting
2.2.3 Frequency Measurement and Pulse Width Measurement In frequency measurement and pulse width measurement modes, the iDAQ-784 measures the frequency of a periodic pulse train via the Gate/Z pins. It also accepts both single end and differential connection types. The signal connection is shown in Figure 2.4. -
Page 21: Position Measurement And Continue Compare
Table 2.2: Encoder connection against different encoder types Encoder Types Counter Pin Pulse-Direction Two-pulse (CW/CCW) AB Phase (Quadrature) (Signed Pulse) CLKn/An Clock Up Counting Signal A AUXn/Bn Direction Down Counting Signal B GATEn/Zn Signal Z SCLKn Counting Latching OUTn Compare Output iDAQ-784 User Manual... -
Page 22: One-Shot (Delayed Pulse Generation)
OUT pin. They can also be controlled by Gate pin. The corresponded signal connection is shown in Figure 2.7. Figure 2.7 Signal Connection for Timer Pulse and Pulse Width Modulation, (Left) Differential gate, (Right) Single-ended gate iDAQ-784 User Manual... -
Page 23: Chapter 3 Function Details
Chapter Function Details... -
Page 24: Event Counting
Figure 3.1 and Figure 3.2, respectively. Figure 3.1 Rising edge event counting Figure 3.2 Falling edge event counting Counting may be temporarily paused by the counter gate signal as shown in Figure 3.3. Figure 3.3 Event counting with pause gate iDAQ-784 User Manual... -
Page 25: Instant (Software-Timed) Event Counting
Because the data is moved in large blocks instead of one point at a time, buffered event counting typically allow much higher transfer rates. Buffered event counting is also called hardware-timed event counting. iDAQ-784 User Manual... -
Page 26: Frequency Measurement
----------------- - --------------------------------------------------------------------------------------------------------------------- Period InternalClockCount InternalClockPer This method is suitable if the counter clock signal frequency is much smaller (< 0.1%) than the internal clock frequency. Measuring accuracy degrades as the counter clock signal frequency increases. iDAQ-784 User Manual... -
Page 27: Counting Number Of Pulses In Fixed Duration
0 Hz. For example, when setting 1 second for timeup, the counter would wait for 1 second after it receives the last pulse, and return 0 Hz when 1 second is reached and there’s not any pulse counted anymore during the period. iDAQ-784 User Manual... -
Page 28: Pulse Width Measurement
The advantage of instant pulse width measurement is low latency. It is typically used for reading a single sample of counter value. Note: In software-timed value reading, the response time is system resource depen- dent. For a stable data reading interval, please use buffered function instead. iDAQ-784 User Manual... -
Page 29: Sample Clock Buffered (Hardware-Timed) Pulse Width Measurement
Buffered pulse width measurement is also called hard- ware-timed pulse width measurement. The advantages of buffered pulse width measurement over instant pulse width mea- surement include: – The sample rate can be much higher. – The time of sample is deterministic. iDAQ-784 User Manual... -
Page 30: Measurement Time-Up
A signal by 90 degrees, the counter value is decreased by 1 for each pulse period. They are shown in Figure 3.11 and Figure 3.12, respectively. Figure 3.11 Quadrature x1 mode, counter A leads counter B Figure 3.12 Quadrature x1 mode, counter B leads counter A iDAQ-784 User Manual... -
Page 31: Quadrature X2 Mode
A signal by 90 degrees, the counter value is decrease by 4 for each pulse period. They are shown in Figure 3.15 and Figure 3.16, respectively. Figure 3.15 Quadrature x4 mode, counter A leads counter B iDAQ-784 User Manual... -
Page 32: Two Pulse (Cw/Ccw) Mode
B signal is low. It is decreased by 1 for each pulse of counter A sig- nal when counter B signal is high. This is shown in Figure 3.18. Figure 3.18 Signed pulse (pulse/direction) mode. iDAQ-784 User Manual... -
Page 33: Position Reset
The advantage of instant position measurement is low latency. It is typically used for reading a single sample of counter value. Note! In software-timed value reading, the response time is system resource dependent. For a stable data reading interval, please use buffered func- tion instead. iDAQ-784 User Manual... -
Page 34: Buffered (Hardware-Timed) Position Measurement
When the counter snapping function is started and receiving the trigger from SCLK pin, a software event would be generated, and the driver will scan all the counters and take a snapshot to these channels. The scanned data will be transferred to the user by the corresponding counter event. iDAQ-784 User Manual... -
Page 35: Position Comparison
The advantage of instant position comparison is that the next compare value can be decided on the fly. Note: In software-timed value reading, the response time is system resource depen- dent. For a stable data reading interval, please use buffered function instead. iDAQ-784 User Manual... -
Page 36: Buffered Position Comparison (Pre-Loaded Table)
3.5.3 Buffered Position Comparison (Fixed Interval) The position comparison can also be set using a fixed interval. With fixed interval N set, the counter output would be generated at every N encoder steps. iDAQ-784 User Manual... -
Page 37: One-Shot (Delayed Pulse Generation)
The output can be gated. If counter gate is in active level, pulses are output normally. On the other hand, if counter gate is in inactive level, output is disabled. Figure 3.28 shows an example of active high gate. Figure 3.27 Gated timer/pulse output iDAQ-784 User Manual... -
Page 38: Static (Software-Timed) Timer/Pulse
Buffered timer/pulse is also called hardware-timed timer/pulse. The advantages of buffered timer/pulse over static timer/pulse include: – The time of sample is deterministic. – The time of sample can be controlled by an external signal. iDAQ-784 User Manual... -
Page 39: Pulse Width Modulation (Pwm Output)
The output can be gated. If counter gate is high, pulses are output normally. On the other hand, if counter gate is low, output is disabled. This is shown in Figure 3.34. Figure 3.33 Gated pulse width modulation output iDAQ-784 User Manual... -
Page 40: Static (Software-Timed) Pwm Output
Figure 3.35. Figure 3.34 Static (software-timed) timer/pulse In software-timed value reading, the response time is system resource Note! dependent. For a stable data reading interval, please use buffered func- tion instead. iDAQ-784 User Manual... -
Page 41: Buffered (Hardware-Timed) Pwm Output
ID, model name and slot number. You can change the description in Navigator, or just leave it as default. The descrip- tion is used in your own program, in order to get control or device handler from the device. iDAQ-784 User Manual... - Page 42 User Manual...
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Page 43: Chapter A Specifications
Appendix Specifications... -
Page 44: Counter
Gate polarity: Rising edge or falling edge, software configurable – Output signal type: Positive pulse or negative pulse, software configurable Generation type: Static Timer/pulse – Timebase clock frequency: 50 MHz – Timebase clock accuracy: 50 ppm iDAQ-784 User Manual... - Page 45 Generation type: Static, implicit buffered, or sample clock buffered, software configurable Position Compare – Compare value: Instant, buffered, software configurable – Output signal type: Positive pulse or negative pulse, software configurable – Output Pulse width: 100 ns ~ 1 s, software configurable iDAQ-784 User Manual...
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Page 46: Electric Properties
– For output functions: 1,024 samples for each counter Sample clock rate: 200 kHz max. Sample clock source: From chassis (all channels share the same clock signal) or external (each channel uses independent clock signal) iDAQ-784 User Manual... -
Page 47: Trigger
Storage temperature: -40 °C to 85 °C (-40 °F to 185 °F) Operating humidity: Up to 90% RH, non-condensing Storage humidity: Up to 95% RH, non-condensing Vibration: 5Grms, Random Vibration Shock: 30G Indoor use only. Function Block iDAQ-784 User Manual... - Page 48 User Manual...
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Page 49: Chapter B System Dimensions
Appendix System Dimensions... -
Page 50: Idaq Modules
Modules iDAQ-784 User Manual... - Page 51 User Manual...
- Page 52 No part of this publication may be reproduced in any form or by any means, such as electronically, by photocopying, recording, or otherwise, without prior written permission from the publisher. All brand and product names are trademarks or registered trademarks of their respective companies. © Advantech Co., Ltd. 2024...
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