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Advantech PCI DAQ Card Training Jason Ng Advantech IAG Product Support Group Jason Ng Advantech IAG Product Support Group.

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Presentation on theme: "Advantech PCI DAQ Card Training Jason Ng Advantech IAG Product Support Group Jason Ng Advantech IAG Product Support Group."— Presentation transcript:

1 Advantech PCI DAQ Card Training Jason Ng Advantech IAG Product Support Group Jason Ng Advantech IAG Product Support Group

2 Agenda Knowing the signal Select the right tools Setup the DAQ card Setup the software Develop software

3 Step by Step Prepare: Understand various type of input and output needs. Understand various type of input and output needs. Understand with various data acquisition topologies and industrial technologies. Understand with various data acquisition topologies and industrial technologies. Understand each DAQ cards specification and specialties. Understand each DAQ cards specification and specialties. Understand the connectivity. Understand the connectivity.Selection: Select the right sensor. Select the right sensor. Select the appropriate signal conditioner and/or wiring terminal. Select the appropriate signal conditioner and/or wiring terminal. Select the right DAQ card. Select the right DAQ card. Select the appropriate software tools. Select the appropriate software tools.

4 Input signal: Voltage Voltage Current Current Temperature Temperature Speed Speed Pressure Pressure Knowing the signal Sensors: Transducer /Conditioner Transducer /Conditioner Thermocouple / RTD Thermocouple / RTD Encoder Encoder Strain gauge Strain gauge Data type: Voltage Voltage Current Current Voltage Voltage Counter / Frequency Counter / Frequency Voltage Voltage

5 Knowing the signal – Cont. 01010 10111 10001 Digital Input 24 to 144 bits TTL and Isolated input Vector Interrupt Counter Function 10111 10011 00100 24 to 144 bits TTL, Relay and Isolated output Timer Function Digital Output Analog Input 25 KHz to 30 MHz 12 to 16 bits 8 to 32 channels Isolated input 12 to 16 bits Voltage output Current output Isolated Output Analog Output Signal Conditioning Amplifier gain up to 1000 Thermocouple, RTD Multiplex up to 256 channels Signal Isolation Relay Output Rating form 30 VDC to 250 VAC Form A, Form C and SSR Opto-22 compatible

6 A/D Resolution: 12 bits - 2 resolution = 2 12 = 4,096 levels 12 bits - 2 resolution = 2 12 = 4,096 levels 16 bits - 2 resolution = 2 16 = 65,536 levels 16 bits - 2 resolution = 2 16 = 65,536 levels Each level also known as Least Significant bit (LSB) represent how small a voltage level can be detect in a specific full scale range. For 12 bits AI, input range is +/-10V: Resolution = 20V / 4096 = 4.88 mV per division For 16 bits AI, input range is +/-10V: Resolution = 20V / 65,536 = 0.305 mV per division Input range is ±0.005V (PCI-1710HG): Input range is ±0.005V (PCI-1710HG): Resolution = 0.01 / 4096 = 2.44μV Resolution = 0.01 / 4096 = 2.44μV Analog Input

7 Sampling rate: 1Hz, 100Hz, 1KHz, 100KHz, 250KHz, 1MHz, 30MHz Nyquist sampling theorem: Sampling rate >= 2 x signal bandwidth Sampling rate: 1Hz, 100Hz, 1KHz, 100KHz, 250KHz, 1MHz, 30MHz Nyquist sampling theorem: Sampling rate >= 2 x signal bandwidth Analog Input – Cont. Measured signal Sampling rate Multiplexing means that the sampling rate is shared across all active input channels. For example, 100KS/s / 16 channels = 6.25KS/s per channel !!! But PCI-1714 is capable of up to 30MS/s per channel – 4 A/D converters Multiplexing means that the sampling rate is shared across all active input channels. For example, 100KS/s / 16 channels = 6.25KS/s per channel !!! But PCI-1714 is capable of up to 30MS/s per channel – 4 A/D converters

8 Other spec: Number of channels – 4, 8,16, 32 Number of channels – 4, 8,16, 32 Input Ranges - Bipolar (0-0.01, 0-2.5, 0-10, etc) Input Ranges - Bipolar (0-0.01, 0-2.5, 0-10, etc) - Unipolar (±10, ±5, ±1, ±0.005, etc) Gain – High gain ( PCI-1710HG/L), programmable gain Gain – High gain ( PCI-1710HG/L), programmable gain FIFO Buffer Size – 1K, 4K, 32K (PCI-1714) samples FIFO Buffer Size – 1K, 4K, 32K (PCI-1714) samples Data transfer mode – Software, Interrupt transfer, DMA transfer (BUS master) Data transfer mode – Software, Interrupt transfer, DMA transfer (BUS master) Trigger mode – Software, Pacer, Pre-Trigger, Post-Trigger, Delay-Trigger, About-Trigger Trigger mode – Software, Pacer, Pre-Trigger, Post-Trigger, Delay-Trigger, About-Trigger Auto-calibration - Auto-calibration - The built-in calibration circuitry corrects gain and offset errors in analog input and analog output channels eliminating the need for external equipment and user adjustments. Board ID Board ID Analog Input – Cont. Single Ended / Differential: CH0 CH1 CH14 CH15 + - CH0H CH1H CH0L CH1L + - Differential has advantage of immune to induced noise on the two input terminals. Since these two signals are subtracted from each other, rather than one terminal to ground, hence, the term is differential. Differential has advantage of immune to induced noise on the two input terminals. Since these two signals are subtracted from each other, rather than one terminal to ground, hence, the term is differential.

9 Analog Input Card Selection ModelChannelResolution Sampling rate Special *PCI-1710/L 16 SE/8 Diff 12 bits 100 KS/s *PCI-1710HG/L 16 SE/8 Diff 12 bits 100 KS/s With High Gain *PCI-1711/L 16 SE 12 bits 100 KS/s *PCI-1712/L 16 SE/8 Diff 12 bits 1 MS/s Bus Master *PCI-1716/L 16 SE/8 Diff 16 bits 250 KS/s Hi Res., Bus Master PCI-1713 32 SE/16 Diff 12 bits 100 KS/s Isolation PCI-1714 4 SE 12 bits 30 MS/s Adv. High Speed * Multi-function Card, /L means no Analog Output

10 Analog Input DAQ card - Quiz 1.Which board has High Gain that can accept Thermocouple input directly, without a signal conditioner? ChannelResolution Sampling rate Special 16 SE/8 Diff 12 bits 100 KS/s 16 SE 12 bits 100 KS/s 16 SE/8 Diff 12 bits 1 MS/s Bus Master 32 SE/16 Diff 12 bits 100 KS/s IsolationModel*PCI-1710/L *PCI-1710HG/L *PCI-1711/L *PCI-1712/L *PCI-1716/L PCI-1713 PCI-1714 3.Which board is capable to sample up to 15MHz of sine wave? 2.Which board has the highest resolution of A/D converter? 16 SE/8 Diff 12 bits 100 KS/s With High Gain 16 SE/8 Diff 16 bits 250 KS/s Hi Res., Bus Master 4 SE 12 bits 30 MS/s Adv. High Speed

11 Analog Output Specs Number of Output Channels - 2, 4, 8, 24 channels Number of Output Channels - 2, 4, 8, 24 channels Output Ranges - Bipolar (0-5V, 0-10V) Output Ranges - Bipolar (0-5V, 0-10V) - Unipolar (±5, ±10) - Current loop (0~20mA, 4~20mA) D/A Resolution - 12, 14, 16 (PCI-1723) bits D/A Resolution - 12, 14, 16 (PCI-1723) bits Throughput - 15, 38, 250KHz and 10MHz Throughput - 15, 38, 250KHz and 10MHz Advanced Features – Retain last output setting after system reset (PCI- 1720), Waveform output, Synchronized output Advanced Features – Retain last output setting after system reset (PCI- 1720), Waveform output, Synchronized output FIFO Buffer Size – 1K samples FIFO Buffer Size – 1K samples Calibration – Auto calibrate and save settings Calibration – Auto calibrate and save settings Board ID Board ID Analog Output Specs Number of Output Channels - 2, 4, 8, 24 channels Number of Output Channels - 2, 4, 8, 24 channels Output Ranges - Bipolar (0-5V, 0-10V) Output Ranges - Bipolar (0-5V, 0-10V) - Unipolar (±5, ±10) - Current loop (0~20mA, 4~20mA) D/A Resolution - 12, 14, 16 (PCI-1723) bits D/A Resolution - 12, 14, 16 (PCI-1723) bits Throughput - 15, 38, 250KHz and 10MHz Throughput - 15, 38, 250KHz and 10MHz Advanced Features – Retain last output setting after system reset (PCI- 1720), Waveform output, Synchronized output Advanced Features – Retain last output setting after system reset (PCI- 1720), Waveform output, Synchronized output FIFO Buffer Size – 1K samples FIFO Buffer Size – 1K samples Calibration – Auto calibrate and save settings Calibration – Auto calibrate and save settings Board ID Board ID Analog Output

12 Analog Output Card Selection ModelChannelResolutionThroughputSpecial PCI-1720 4 Isolated 12 bits 15 KS/s PCI-17214 12 bits 10MHz update Bus master, Waveform output PCI-17238 16 bits 15 KS/s Hi resolution PCI-1724U32 14 bits 15 KS/s

13 Analog Output Card – Quiz 1.Which board has the highest resolution of D/A converter? ChannelResolutionThroughputSpecial 4 Isolated 12 bits 15 KS/s 4 12 bits 10MHz update Bus master, Waveform output 2.Which board has highest number of Analog Output channel? ModelPCI-1720 PCI-1721 PCI-1723 PCI-1724U 8 16 bits 15 KS/s Hi resolution 32 14 bits 15 KS/s

14 Specs: Number of channels – 16, 32, 48, 96, 192* channels / bits Number of channels – 16, 32, 48, 96, 192* channels / bits I/O types – TTL level, Opto-Isolated up to 2500V DC, Relay output (Form A /C), Dry / Wet Contact I/O types – TTL level, Opto-Isolated up to 2500V DC, Relay output (Form A /C), Dry / Wet Contact Transfer Rate – 10KB/s, 80MB/s (PCI-1755) Transfer Rate – 10KB/s, 80MB/s (PCI-1755) FIFO Buffer Size – 16KB for DI & 16KB for DO FIFO Buffer Size – 16KB for DI & 16KB for DO Advance Features – Retain last output values when system hot reset, Pattern match and Change of state detection, PWM, Digital Filter Advance Features – Retain last output values when system hot reset, Pattern match and Change of state detection, PWM, Digital Filter Mixture of I/O type – 32 TTL level and 32 Isolated (PCI-1730) Mixture of I/O type – 32 TTL level and 32 Isolated (PCI-1730) Universal PCI support – Support both 3.3V and 5V PCI slot (PCI-1760U) Universal PCI support – Support both 3.3V and 5V PCI slot (PCI-1760U) On-board diagnostic – LED indicators to show activated relays On-board diagnostic – LED indicators to show activated relays Board ID Board ID Digital Input / Output * Total of 192 bits is possible by expand a PCI-1753E to a PCI-1753

15 CategoryModelInput ChannelOutput ChannelCounter Channel Non-Isolated (TTL) PCI-1751483 x 16 bits PCI-1753/E96 / 192 PCI-1755323 x 16 bits PCI-1757UP24 PCI-1730 16 Isolated 16 (Sink) PCI-173332 (Sink) PCI-173432 (Sink) PCI-175016 (Sink) 1 x 16 bits PCI-175264 (Sink) PCI-175464 (Sink) PCI-175632 (Sink) PCI-1760U8 (Sink)8 (Relay)2 Up Counter (16 bits) PCI-17618 (Sink)8 (Relay) PCI-176216 (Sink)16 (Relay) Digital Input / Output card selection

16 Digital Input / Output card - Quiz 1. Which board can be extended for up to 192 bits? 2. Which board can be plug in to both 3.3V and 5V PCI slot? 3. Which board has low profile form factor? CategoryModel Non-Isolation (TTL) PCI-1751 PCI-1753/E PCI-1755 PCI-1757UP PCI-1730 96 / 192 24 Input Channel Output Channel Counter Channel 48 3 x 16 bits 32 1616

17 Digital Input / Output card - Quiz 1. Which board(s) is Relay output board? 2. Which board has counter for interrupt purpose? 3. Which board has both TTL and Isolated I/O? CategoryModelInput ChannelOutput ChannelCounter Channel Isolated PCI-1730 PCI-1733 PCI-1734 PCI-1750 PCI-1752 PCI-1754 PCI-1756 PCI-1760U PCI-1761 PCI-1762 32 (Sink) 64 (Sink) 32 (Sink) 8 (Sink) 8 (Relay) 2 Up Counter (16 bits) 8 (Sink) 8 (Relay) 16 (Sink) 16 (Relay) 16 (Sink) 1 x 16 bits 16 (Sink)

18 Specification: Number of channels – 4, 8 channels Number of channels – 4, 8 channels Resolution – 16, 32 bits independent counters Resolution – 16, 32 bits independent counters Input Frequency – 8, 20 MHz Input Frequency – 8, 20 MHz Quadruple Encoder – 4 axis AB phase w/ w/t index (PCI-1784) Quadruple Encoder – 4 axis AB phase w/ w/t index (PCI-1784) Digital filter – 4 stage with selectable sampling rate Digital filter – 4 stage with selectable sampling rate Board ID Board ID Counter /Encoder ModelResolutionChannelsFrequencyI/O PCI-1780 16 bits 8 20 MHz 8 In 8 Out TTL PCI-1784 32 bits 4 8 MHz 4 In 4 Out Isolated

19 Counter /Encoder - Quiz 1. Which board support quadrature input? ModelResolutionChannelsFrequencyI/O PCI-1780 PCI-1784 2. Which board has maximum input frequency? 16 bits 8 20 MHz 8 In 8 Out TTL 32 bits 4 4 In 4 Out Isolated 8 MHz

20 You understand various type of input / output signal… You know each Advantech DAQ cards specification and specialties… What else is needed in between the DAQ card and signal?

21 Signal Conditioning and Screw Terminal Board ADAM-3000 Modules Signal Conditioning (T/C, RTD, Strain Gauge, Amplifier) Wiring Terminal (20pin flat, DB-25,37,62, Relay, etc.) PCLD Signal Conditioning Boards Opto-Isolation, Relay, T/C CJC, Screw Terminal

22 ADAM-3000 Series - Signal Conditioning Module ThermocoupleRTD DC Voltage / CurrentStrainGaugeADAM-3011 J, K, T, E, S, R, B type ADAM-3013 Pt or Ni type ADAM-3014 ±10mV, ±10V, 0~10mV, 0~10V, ±20mA, 0~20mA ADAM-3016 ±10, 20, 30, 100mV Sensors ADAM-3000Analog Input CardPlatform

23 ADAM-3900 Series – Screw Wiring Terminal Wiring cable: Wiring cable: – Connector type is 68-pin SCSI-II female connector, also has 50, 37, 25 and 20 pin cable for different terminal board / configuration. – Two cable length: 1m and 2m Wiring terminal boards: Wiring terminal boards: All DAQ Boards All Multi Function DAQ except PCI-1712 PCI-1712 ADAM-3900 Series Pin-to-pin screw terminal board ADAM-3900 Series Pin-to-pin screw terminal board PCLD-8710 for PCI-1710/1711/1716 boards Ps. same pin assignments PCLD-8710 for PCI-1710/1711/1716 boards Ps. same pin assignments ADAM-8712 for PCI-1712 boards

24 PCLD Series – Multifunction DAQ Wiring Solution ModelTypeChannelDescription PCLD-782/B Opto-Isolated DI 16/24 Provide isolation up to 24V DC to TTL level signal PCLD-785/B Relay Output 16/24 Provide relay output from TTL level control signal PCLD-786 SSR Carrier Board 8 Hold up to 8 SSR I/O Modules PCLD-788 Relay Multiplexer 16 Multiplex 16 AI channel to 1 AI PCLD-885 Power Relay Output 16 Provide high power relay output from TTL level control signal PCLD-7216 SSR Carrier Board 16 Hold up to 16 SSR I/O Modules

25 Ready? Now we are going to look at a project and we will select appropriate components from what we had gone through to do measure and control of signals.

26 1. Need to: a) Measure 4 channels of 5V DC analog signals b) Control 2 channel of 5V DC analog signals c) Input 8 digital signals and output 8 digital signals d) 16 bit of resolution Criteria… 2.What do we need? a)4 AI – 5V DC b)2 AO – 5V DC c)8 DI - TTL d)8 DO – TTL 3.A multifunction DAQ card with 16-bit resolution

27 Select the DAQ card Type Mode Name ResolutionAI Max. Gain SpeedAO/DI/DO/CTR Low Cost PCI-1711 12 bits 16SE1,2,4,8,16 100 KS/s 2AO,16DI,16DO,1CTR GeneralPCI-1710 12 bits 16SE/8DI 0.5, 1,2,4,8 100 KS/s 2AO,16DI,16DO,1CTR High Gain PCI-1710HG 12 bits 16SE/8DI 0.5 ~ 1000 100 KS/s 2AO,16DI,16DO,1CTR High Speed PCI-1712 12 bits 16SE/8DI0.5,1,2,4,8 1 MS/s 2AO,16DI,16DO,3CTR High Resolution PCI-1716 16 bits 16SE/8DI0.5,1,2,4,8 250 KS/s 2AO,16DI, 16DO, 1CTR Criteria: 4 AI – 5VDC, 2 AO – 5VDC, 8 DI – TTL, 8 DO – 24VDC, 16 bits

28 Select the terminal board ModelTypeChannelDescription PCLD-8710 Wiring terminal 68 Basic wiring terminal for PCI DAQ cards PCLD-782/B Opto-Isolated DI 16/24 Provide isolation up to 24V DC to TTL level signal PCLD-785/B Relay Output 16/24 Provide relay output from TTL level control signal PCLD-788 Relay Multiplexer 16 Multiplex 16 AI channel to 1 AI output PCLD-789D Amp. & Multiplexer 16 Multiplex 16 AI channel to 1 AI with gain PCLD-885 Power Relay Output 16 Provide high power relay output from TTL level control signal

29 The selected DAQ card and Terminal board PCI-1716 – 16 bits, 16SE/8Diff, 16DI, 16 DO PCI-1716 – 16 bits, 16SE/8Diff, 16DI, 16 DO PCLD-8710 – Basic wiring terminal for PCI DAQ cards PCLD-8710 – Basic wiring terminal for PCI DAQ cards

30 Software driver support OCX Linux Driver LinuxApplication Windows 95/98/NT/2000/ME/XP DLL Driver ActiveX LabVIEWDriver Signal Conditioning Comm. Motion Data Acquisition GPIB Data Acquisition Tool Box LabVIEWMATLAB How to get up-to-date driver support status: Please visit www.advantechdirect.com/60DayTrial/Products.htm for detailwww.advantechdirect.com/60DayTrial/Products.htm Windows Utility Windows Application VC ExampleVB ExampleBCB ExampleDelphi Example

31 Setup the DAQ card Hardware and software: Install Advantech Device Manager Install Advantech Device Manager Install individual DLL driver Install individual DLL driver Configure any DIP switches or jumpers Configure any DIP switches or jumpers Install the DAQ card in the platform Install the DAQ card in the platform Connect any daughter board and signal conditioner Connect any daughter board and signal conditioner Launch Advantech Device manager Launch Advantech Device manager Configure DAQ cards configuration – Input range, Output range, Daughter board Configure DAQ cards configuration – Input range, Output range, Daughter board

32 How to connect: 1.PCL-10168 68 pin SCSI-II cable to connect from PCI-1716 to PCLD-8710

33 Additional wiring On PCLD-8710: On PCLD-8710: 1. Wire DA0 OUT to AI0 2. Wire AI2 to AI GND next to it 3. Plug the 20-pin ribbon cable on CN2 (DIG OUT) and CN3 (DIG IN) 4. Wire PACER OUT to DI15 for Counter test 5. Wire +5V to AI1

34 Advantech Device Manager

35 Device Manager Test Utility

36 Setup the software Install programming examples file – All_Examples.exe Install Advantech ActiveDAQ driver for ActiveX control – ActiveDAQ.exe Install Advantech LabView driver – LabVIEW.exe Install programming examples file – All_Examples.exe Install Advantech ActiveDAQ driver for ActiveX control – ActiveDAQ.exe Install Advantech LabView driver – LabVIEW.exe

37 Step 1: Open MS Studio.NET Step 2: Open an Analog Input example at C:\Program Files\Advantech\ActiveDAQ\Examples\VBNET\AI\AI.sln C:\Program Files\Advantech\ActiveDAQ\Examples\VBNET\AI\AI.sln Testing the DAQ card Step 3: Press F5 to run the example and select the PCI-1716 card. Step 4: Configure the channels and input range. Click on Start and then Get buffer to read values from channels.

38 Auto-Calibration What if the ADC is offset and cause the reading is not accurate? What if the ADC is offset and cause the reading is not accurate? Install the Auto-Calibration utility from the DAC CDs utility folder – Utility.exe Install the Auto-Calibration utility from the DAC CDs utility folder – Utility.exe

39 Auto-Calibration – Cont. Follow the step by step method on the utility to finish the calibration. Note: Remember to configure the DA Voltage Ref as Internal and the range as +/-5V. Follow the step by step method on the utility to finish the calibration. Note: Remember to configure the DA Voltage Ref as Internal and the range as +/-5V.

40 Now we are ready for the real programming hands on We will exercise: 1.ActiveDAQ 2.LabVIEW 3.C++ We will exercise: 1.ActiveDAQ 2.LabVIEW 3.C++ DRV_DeviceOpen Function Group DRV_DeviceClose

41 ActiveDAQ – Intro. Advantech ActiveDAQ is a collection of ActiveX controls that allows you to perform versatile I/O operations easily through the control properties, methods, and events. It significantly reduces the complexity and effort of the programming. Advantech ActiveDAQ is a collection of ActiveX controls that allows you to perform versatile I/O operations easily through the control properties, methods, and events. It significantly reduces the complexity and effort of the programming. Note: ActiveDAQ 1.6.1 only support PCI DAQ cards, for PCL ISA DAQ card support please install ActiveDAQ 1.56.

42 Exercise… ActiveDAQ Create a simple analog read program by using ActiveDAQ in VB.NET. You can refer to the C:\Program Files\Advantech\ActiveDAQ\ActiveDAQ User Manual.chmC:\Program Files\Advantech\ActiveDAQ\ActiveDAQ User Manual.chm Step 1: Add PCI-1716 card in Advantech Device Manager Step 2: Open a new Visual Basic project in Visual Studio.NET Step 3: On Tools menu | Add/Remove Toolbox Items…| COM Components | Check all (6 components) Advantech ActiveDAQ Controls. All the components can be found in Windows Forms of the Toolbox. Step 4: Design the Form by referring to the ActiveDAQ hand out Step 5: Configure AI Control in the Properties Window Step 6: Writing Code for the ActiveDAQ Controls – Code can be find in here.here Step 7: Test Your Program with PCI-1716 card

43 Exercise… ActiveDAQ – Cont. Now we want to read it continuously. 1: Add a Timer and 3 buttons control to the form and configure it Step 1: Add a Timer and 3 buttons control to the form and configure it Step 2: Writing code for the additional ActiveDAQ controls Step 3: Test your new program

44 LabVIEW driver – Intro. The LabVIEW driver forms an interface between Advantech DAC device (DLL) drivers, which contain all the relevant functions to control the DA&C device, and the LabVIEW software. The LabVIEW driver forms an interface between Advantech DAC device (DLL) drivers, which contain all the relevant functions to control the DA&C device, and the LabVIEW software.

45 Exercise… LabView Create a simple analog read program by using LabView, follow the instructions on the LabVIEW handouts. C:\Program Files\National Instruments\LabVIEW 7.0\LabVIEW Driver Manual.chm for description on Advantech LabVIEW VIs functions. You can refer to the C:\Program Files\National Instruments\LabVIEW 7.0\LabVIEW Driver Manual.chm for description on Advantech LabVIEW VIs functions.C:\Program Files\National Instruments\LabVIEW 7.0\LabVIEW Driver Manual.chmC:\Program Files\National Instruments\LabVIEW 7.0\LabVIEW Driver Manual.chm

46 C++ Programming- Intro Free DLL drivers available in all Advantech DAQ cards. Free DLL drivers available in all Advantech DAQ cards. Lower software development cost. Lower software development cost. Provide a flexible low level programming environment. Provide a flexible low level programming environment.

47 Exercise… C++ Create a simple analog read program by using VC++. You can refer to the C:\Program Files\Advantech\ADSAPI\Examples\Console\AD_SOFT 1. Create a new project in Win32 Application 2. Name the project 3. Add the source codes (file) to the project source codes (file) source codes (file) 4. Add the resource library file to the project 5. Compile the project

48 Projects Based on your choice of programming tools, try to add a Analog Output (AO) to the existing program so that you can read back the output values. If you have time left, add a Digital I/O function as well.

49 Questions?

50 Wet Contact: 5~40V DC – High 0~2V DC – Low Dry Contact: Open – High Close – Low Wet Contact: 5~40V DC – High 0~2V DC – Low Dry Contact: Open – High Close – Low


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