National Instruments NI Vision CVS-1456, User Manual

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Chapter 3

Digital I/O Functionality

©

National Instruments Corporation

3-17

NI CVS-1450 Series User Manual

Figure 3-9 illustrates a typical single-camera setup.

Figure 3-9.

Typical Single-Camera Setup

1

Lighting Control Unit

2

Lighting Ring

3

Inspection Items

4

Proximity Sensor

NI 1454
Compact Vision System

1

2

3

4

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Summary of Contents for NI Vision CVS-1456

Page 1: ...NI Vision NI CVS 1450 Series User Manual NI CVS 1450 Series User Manual November 2007 373610F 01...

Page 2: ...ebanon 961 0 1 33 28 28 Malaysia 1800 887710 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7...

Page 3: ...ncluding photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation National Instruments...

Page 4: ...t of Communications DOC Changes or modifications not expressly approved by NI could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission Thi...

Page 5: ...nspection Vision Builder AI 1 5 LabVIEW 1 5 LabVIEW Real Time Module 1 6 NI Vision Acquisition Software 1 7 Chapter 2 LEDs DIP Switches and Connectors LED Indicators 2 1 POWER OK LED 2 2 STATUS LED 2...

Page 6: ...se I O 3 8 I O for Fault Conditions 3 9 Shutdown 3 10 Watchdog Timer 3 11 Overheat 3 12 Considerations When Connecting the Digital I O 3 12 Wiring an Isolated Input to a Sourcing Output Device 3 12 Wi...

Page 7: ...he last dialog box This icon denotes a tip which alerts you to advisory information This icon denotes a note which alerts you to important information This icon denotes a caution which advises you of...

Page 8: ...ns NI Vision Acquisition Software Release Notes Outlines new functionality system requirements installation procedures and descriptions of the documentation included with the NI IMAQdx driver software...

Page 9: ...nd status information and to configure the NI CVS 1450 device settings When configured the NI CVS 1450 device can run applications without a connection to the development computer Each NI CVS 1450 dev...

Page 10: ...e signal integrity Figure 1 1 shows the NI CVS 1450 Series front panel Figure 1 1 NI CVS 1450 Series Front Panel 1 Power LED 2 Status LED 3 Isolated Digital Input 4 TTL Digital Outputs 5 IEEE 1394a Po...

Page 11: ...ates and larger image sizes require a higher data transfer rate and use more bandwidth Table 1 1 shows the maximum number of cameras the NI CVS 1450 device supports for three common video formats Use...

Page 12: ...1450 Series Compact Vision System for installation and configuration instructions The following sections describe the software options For detailed information about individual software packages refe...

Page 13: ...3 0 or later No additional software is needed Vision Builder AI is configurable software for building benchmarking and deploying machine vision applications Vision Builder AI does not require program...

Page 14: ...analysis Gauging Taking measurements Grayscale color and binary image display With the NI Vision Development Module you can acquire display and store images as well as perform image analysis and proc...

Page 15: ...These VIs include routines for video configuration continuous and single shot image acquisition trigger control and register level camera configuration NI IMAQdx also handles many of the complex issue...

Page 16: ...IP switches and connectors on the NI CVS 1450 device The Connectors section provides signal names and descriptions for each connector LED Indicators Figure 2 1 shows the location of the POWER OK and S...

Page 17: ...operating conditions and flashes a specific number of times to indicate error conditions or certain DIP switch settings The STATUS LED remains lit if the NI CVS 1450 device detects an internal error R...

Page 18: ...K and 10 100 Mbps LEDs DIP Switches This section describes the SAFE MODE IP RESET NO APP and USER 1 DIP switches on the NI CVS 1450 device To enable a DIP switch move the switch to the ON left positio...

Page 19: ...e safe mode to reconfigure TCP IP settings and to download or update software from the development computer Downloading incorrect software to the NI CVS 1450 device may cause it to hang during restart...

Page 20: ...ration for the NI CVS 1450 device from a development machine on the same subnet or you can use an Ethernet crossover cable to connect the NI CVS 1450 device directly to the development computer NO APP...

Page 21: ...output circuitry Caution The isolation provided by the NI CVS 1450 device is intended to prevent ground loops that could introduce noise into the system This isolation does not provide safety isolatio...

Page 22: ...n the NI CVS 1450 device to connect the chassis to earth ground Connecting the grounding lug shown in Figure 2 5 to earth ground connects the common mode signal of the main power to earth ground throu...

Page 23: ...a Bandwidth section of Chapter 1 NI CVS 1450 Series Overview To access the IEEE 1394 connectors on the NI CVS 1450 device use any standard 6 pin IEEE 1394 cable Note You can use a 4 pin to 6 pin conve...

Page 24: ...he NI CVS 1450 device Table 2 3 VGA Connector Signals Pin Number Signal Name Signal Description 1 R Red 2 G Green 3 B Blue 4 NC No Connect 5 C Common mode signal of the NI CVS 1450 device main power 6...

Page 25: ...al Port VIs access COM1 as Port 0 Figure 2 7 shows the location and pinout of the COM1 DSUB 9 pin connector Figure 2 7 COM1 DSUB 9 Pin Connector 10 C Common mode signal of the NI CVS 1450 device main...

Page 26: ...vice automatically detects the speed of the connection and configures itself accordingly If you are connecting the NI CVS 1450 device to the development computer through a network port use a standard...

Page 27: ...o the TTL outputs use the National Instruments SMB 111 coaxial cable part number 763422 01 Note Additional TTL outputs are available on the 44 pin DSUB connector Caution Do not connect voltage or curr...

Page 28: ...om the Viso pins on the 44 pin DSUB connector Do not draw more than 100 mA from 24 V or 30 V isolated outputs Do not draw more than 50 mA from 5 V isolated outputs Table 2 5 44 Pin DSUB and 37 Pin Ter...

Page 29: ...se output 13 35 ISO Output 1 General purpose output 14 34 Ciso Isolated common mode signal 15 9 ISO Input 0 Input port Data 0 16 2 TTL Input 1 Pulse generator trigger input General purpose input 17 3...

Page 30: ...3 16 Ciso Isolated common mode signal 34 14 ISO Input 4 Input Port Data 4 35 15 ISO Input 5 Input port latch Data 5 Pulse generator trigger input 36 28 Ciso Isolated common mode signal 37 25 ISO Input...

Page 31: ...l 43 30 ISO Input 10 General purpose input General purpose input 44 31 ISO Input 11 User shutdown General purpose input Table 2 5 44 Pin DSUB and 37 Pin Terminal Block Connector Signals Continued 44 P...

Page 32: ...robe lighting outputting inspection results or communicating with PLCs Refer to the NI IMAQ I O documentation and examples in the following location LabVIEW examples imaq imaqio llb You can also defin...

Page 33: ...ops that can introduce noise into a system You can apply signals up to 30 V to the isolated inputs The voltage swing of the isolated outputs is determined by the Viso you supply on the connector Note...

Page 34: ...ion item is passing in front of the camera The NI CVS 1450 device uses this input to initiate a timed pulse Table 3 2 Isolated Inputs and Outputs Primary Function Input or Output Number Available Sign...

Page 35: ...configure the start of the pulse output generation to occur from software or from a rising or falling edge of a trigger input In addition to controlling the timing of pulse output you can also configu...

Page 36: ...ted Figure 3 1 Output Pulse When Trigger Is Selected Pulse Modes Each pulse generator has a Start and a Stop mode Configure the pulse generator when in Stop mode and then set it to Start mode Pulse De...

Page 37: ...have different polarities Figure 3 2 shows the output of a pulse generator configured to look for a rising edge trigger and output a high pulse with a microsecond width and delay Figure 3 2 High Puls...

Page 38: ...r Low Pulse with a Quadrature Encoder Delay Product Selection Port The product selection port consists of a group of five isolated digital inputs that the software running on the NI CVS 1450 device re...

Page 39: ...ny time the software running on the NI CVS 1450 device can read the inputs and drive the outputs high or low General Purpose Inputs The primary difference between general purpose inputs and trigger in...

Page 40: ...sing general purpose outputs is driving a relay that turns on an Inspection in Progress light for an operator to see while the inspection sequence is running I O for Fault Conditions The NI CVS 1450 d...

Page 41: ...me operation you must reset the NI CVS 1450 device For all fault conditions outputs operate according to user defined shutdown states Each TTL output is configurable to drive high drive low or 3 state...

Page 42: ...Indicator Only option only to test the watchdog timer If software becomes unresponsive it cannot be relied upon to send notification to the host Indicator Only This option sends the expiration signal...

Page 43: ...ting the Digital I O The isolated trigger inputs on the NI CVS 1450 device are current sinking and optically isolated Figure 3 5 shows the trigger input interface circuit Wiring an Isolated Input to a...

Page 44: ...The digital output circuit sources current to external loads as shown in the example in Figure 3 6 Caution Do not draw more than 100 mA from 24 V or 30 V isolated outputs Do not draw more than 50 mA...

Page 45: ...the power supply To limit flyback voltages at the inductive load install a flyback diode across the load Mount the flyback diode as close to the load as possible Use this protection method if you conn...

Page 46: ...onnect to the SMB connectors Figure 3 8 shows connections to the 44 pin DSUB connector and the TRIG 0 SMB connector that minimize transmission line effects Figure 3 8 Example Connections When connecti...

Page 47: ...I O capabilities of the SMB connectors on the NI CVS 1450 device are ideal for typical single camera applications The SMB connectors are labeled TRIG 0 TRIG 1 and TRIG 2 Table 3 5 summarizes a typical...

Page 48: ...Corporation 3 17 NI CVS 1450 Series User Manual Figure 3 9 illustrates a typical single camera setup Figure 3 9 Typical Single Camera Setup 1 Lighting Control Unit 2 Lighting Ring 3 Inspection Items...

Page 49: ...An Ethernet connection between the development computer and the NI CVS 1450 device allows you to assign an IP address configure the NI CVS 1450 device download inspection tasks and remotely monitor an...

Page 50: ...mming and monitoring of any NI CVS 1450 device not protected by a firewall or user password Use the NI CVS 1450 device serial number and media access control MAC address to uniquely identify each unit...

Page 51: ...ne All image acquisition inspection decision making and I O occurs on the NI CVS 1450 device itself For local monitoring of the inspection you can connect a monitor directly to the Video Out connector...

Page 52: ...nicate with unconfigured NI CVS 1450 devices even if these devices are on the same subnet You can test this by connecting the development computer and the NI CVS 1450 device directly to a network port...

Page 53: ...the CVS 1450 device has network connectivity If the CVS 1450 device is on the same subnet as the host computer then refreshing the list of remote devices in MAX or Vision Builder AI will cause the CV...

Page 54: ...e you want to reformat and select Format Disk The video output connected to the NI CVS 1450 device displays the status of the format 5 After the format completes disable the SAFE MODE switch and resta...

Page 55: ...cally isolated from the NI CVS 1450 device main supply they require power in addition to the NI CVS 1450 device main supply Runaway Startup Application If a runaway startup application causes the NI C...

Page 56: ...ng Started with the NI CVS 1450 Series Compact Vision System Using a power supply that is not within these specifications might result in an unresponsive or unstable system and could damage the NI CVS...

Page 57: ...nts part number 189154 01 Mounting the NI CVS 1450 Series If you want to create a custom mount Figures B 1 through B 4 provide dimensional drawings and clearance information for the NI CVS 1450 Series...

Page 58: ...ons Figure B 2 Side View of the NI CVS 1450 Series with Dimensions 49 28 mm 1 940 in 19 74 mm 0 777 in 1 52 mm 0 06 in 20 32 mm 0 80 in 24 64 mm 0 97 in 63 42 mm 2 497 in 4X 4 40 UNC Max Depth 5 08 mm...

Page 59: ...nd Connection section of Chapter 2 LEDs DIP Switches and Connectors for more information about the grounding lug Caution Your installation must meet the following space and cabling clearance requireme...

Page 60: ...ollowing steps to secure the NI CVS 1450 device to your mount 1 Align the screw holes of your mounting bracket with the four holes on the back of the NI CVS 1450 device Figure B 1 shows the location o...

Page 61: ...Instruments Application Engineers make sure every question receives an answer For information about other technical support options in your area visit ni com services or contact your local office at...

Page 62: ...i com calibration If you searched ni com and could not find the answers you need contact your local office or NI corporate headquarters Phone numbers for our worldwide offices are listed at the front...

Page 63: ...pecification Version 1 30 DIP switch Dual Inline Package switch E Ethernet cable standard CAT 5 or CAT 6 Ethernet cable used to connect a Real Time target to a network port Ethernet crossover cable CA...

Page 64: ...A signal consisting of a series of continuous pulses R rising edge The digital signal transition from the low state to the high state RS 232 Standard electrical interface for serial data communication...

Page 65: ...ndard protocols for communicating across a single network or interconnected set of networks UDP is for low overhead transmissions V VDC Volts direct current VI Virtual Instrument A combination of hard...

Page 66: ...rmity NI resources C 1 deployment 4 1 diagnostic tools NI resources C 1 digital camera specification vii 1 1 digital I O 44 pin DSUB 2 12 connection considerations 3 12 connector table 2 6 connector p...

Page 67: ...input sourcing output device 3 12 isolated output external load 3 12 K KnowledgeBase C 1 L label MAC address serial number 4 2 LabVIEW 1 5 LabVIEW Real Time Module description 1 6 latch 3 8 LEDs figu...

Page 68: ...1 NI IMAQdx 1 5 1 7 sourcing output device wiring 3 12 figure 3 12 STATUS LED 2 2 error indications table A 5 subnet 4 2 support technical C 1 T technical support C 1 terminal block 37 pin table 2 13...

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