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Line Topology

In a line topology—also known as daisy-chaining or bus topology—the host communicates
directly with all nodes through one bus line. A standard Ethernet device or switch can be
added to the end of the chain if desired and used as normal. Be aware that these devices will
compete for network bandwidth with the FieldDAQ device. Reliable system design requires
awareness of the bandwidth consumed by each device during operations. This topology offers
no redundant links.

Figure 22. Line Topology

Networking

Node

Node

Node

Host

Advantages:
•

Simple and inexpensive installation, expansion, and troubleshooting

•

Ideal for low number of nodes. NI recommends a maximum of 15 nodes.

•

No external switch needed

•

Can cover long distances

Disadvantages:
•

Any unpowered nodes and/or node failure disrupts network communication

•

Addition or removal of any node disrupts network communication

•

Failure of any Ethernet cable and/or improper cable termination disrupts network
communication

•

Network performance and synchronization affected when node count exceeds 15.
Consider the 

Star Topology

 for systems that require a greater number of nodes.

Note

 

For information about daisy-chaining power, refer to 

Power Connectors and

Wiring

.

Ring Topology

In a ring topology, the host communicates with all nodes through the most effective path. You
must use an external switch in a ring topology. You must configure the network properly with
a recommended external switch before creating redundant links in the network. Refer to 

External Switch Requirements

 for information about what to look for in an external switch.

32

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ni.com

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FD-11634 User Guide

Summary of Contents for FD-11634

Page 1: ...onal Instruments FD 11634 Manual Get Pricing Availability at ApexWaves com Call Today 1 800 915 6216 Email sales apexwaves com https www apexwaves com modular systems national instruments fielddaq FD 11634 ...

Page 2: ...EEE 802 1AS devices Figure 1 FD 11634 Front Panel FD 11634 1 V 10 V 24 Bit IEPE Input STATUS IN 10 A TOTAL 9 30 V FieldDAQ OUT 0 10 100 1000 LINK ACT SYNC 1 0 1 2 3 0 1 2 3 BANK 1 BANK 2 NC AI AI NC NC 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 1 4 5 2 3 3 1 4 2 3 5 6 7 8 10 9 1 2 4 5 6 1 Power IN Connector 2 Power LED 3 Ethernet Port 0 and LED 4 Bank 1 Input Connectors ...

Page 3: ...ing 19 IEPE Excitation 19 Open Short Circuit Detection 19 Filtering 19 Data Rates 24 Programming the FieldDAQ Device 25 Time Based Triggers 26 Timebases 27 Synchronization across a Network 27 More Information about Synchronization 28 Ethernet Ports and Networking 28 Ethernet Ports 28 Ethernet LEDs 29 Internal Ethernet Switch 30 Topology Options 31 External Switch Requirements 34 Connecting to a Re...

Page 4: ...or pinout Refer to Signal Input Connectors on page 15 Ethernet connector pinout Refer to Ethernet Ports on page 28 Power connector pinout Refer to Power Connectors on page 12 Driver Support Earliest driver support version for your FieldDAQ device Table 1 FD 11634 Driver Support Driver Earliest Version Support NI DAQmx 18 6 Cables and Accessories The following table lists some cables and accessorie...

Page 5: ... O Connector 785941 01 FD 11951 M125F RA Field serviceable I O Connector 785942 01 M12 Torque Wrench Ethernet and I O 786181 01 M12 Torque Wrench Power 786182 01 Universal M12 Male Cap Plastic 786177 01 Universal M12 Male Cap Metal 786178 01 Universal M12 Female Cap Plastic 786180 01 Universal M12 Female Cap Metal 786179 01 FD 11960 DIN Rail Mounting Kit 786443 01 FD 11634 Documentation Documents ...

Page 6: ...rence with radio and television reception and prevent unacceptable performance degradation install and use this product in strict accordance with the instructions in the product documentation Furthermore any changes or modifications to the product not expressly approved by NI could void your authority to operate it under your local regulatory rules Electromagnetic Compatibility Notices Refer to th...

Page 7: ...maged device Store the device in the antistatic package when the device is not in use Hardware Symbol Definitions The following symbols are marked on your FieldDAQ device When this symbol is marked on a product refer to Safety Guidelines for information about precautions to take At the end of the product life cycle all NI products must be disposed of according to local laws and regulations For mor...

Page 8: ...t environment ADE readme files for specific version compatibility 2 Install NI DAQmx from ni com downloads drivers Complete the instructions 3 Register your NI hardware online at ni com register when prompted The last dialog box opens with the following options Restart Later to install more NI software or documentation Shut Down or Restart if you are ready to install your device If you have proble...

Page 9: ... to Power LED for information about Power LED status 8 To add the FieldDAQ to your software configuration open NI MAX on your Windows host computer Expand Devices and Interfaces Network Devices If the device is on your local subnet the device automatically appears in the list of available devices Right click the FieldDAQ device and select Add Device If the device is not on your local subnet right ...

Page 10: ...ld of the Find Network NI DAQmx Devices window and click the button Enter the hostname of the device The default hostname is FD11634 serial number 2 Click Add Selected Devices The FieldDAQ device icon changes from white to dark grey indicating that it is recognized and present on the network FD 11634 User Guide National Instruments 9 ...

Page 11: ...fter the STATUS LED turns off then click Refresh List Contact your system administrator to confirm that the network is working and that a firewall is not interfering with discovery For additional troubleshooting resources for the FieldDAQ device refer to the Troubleshooting Device Connectivity in this guide and the Finding a Network DAQ Device in MAX topic in the Measurement Automation Explorer He...

Page 12: ...ements Cover the unused connectors with the included plastic caps whenever water dust or dirt are present Note Avoid long periods of exposure to sunlight For instructions on networking to a real time controller refer to Connecting to a Real Time Controller Power Connectors and Wiring The FieldDAQ device has two 5 pin L coded M12 power connectors power IN and power OUT The power connectors provide ...

Page 13: ...n your network The FieldDAQ device does not make use of the auxiliary power itself If you are connecting power through the auxiliary power lines ensure that the total combined current between V Input and Aux power lines does not exceed 10 A Refer to the FD 11634 Specifications for information about the power connectors power requirements and current limits of your FieldDAQ device Cap the power con...

Page 14: ...e primary power source to the V terminal pin 1 inside the power connector plug b Connect the negative lead of the primary power source to the C terminal pin 3 inside the power connector plug c Connect the Chassis Ground terminal pin 5 inside the power connector plug to earth ground This terminal is internally connected to the C terminal d Optional To power non FieldDAQ devices through the power ne...

Page 15: ...ations for information about the maximum voltage from terminal to chassis ground Signal Input Connectors and Measurements The following figures show the signal input circuitry and block diagram of the FD 11634 Figure 8 FD 11634 Input Circuitry Amplifier ADC AI AI AC DC Coupling 4 mA IEPE On off Hardware Data 50 Ω 1 MΩ 2 4 Filter 14 ni com FD 11634 User Guide ...

Page 16: ...ing you to sample all channels simultaneously AI channels are referenced to isolated ground through a 50 Ω resistor AC DC coupling is software selectable For AI channels set to AC coupling IEPE excitation current is software selectable The FD 11634 features TEDS Class I circuitry The FieldDAQ device provides overvoltage protection for each channel refer to the FD 11634 Specifications for more info...

Page 17: ...ough NI Other manufacturers cable wire colors may vary Note M12 connectors must be mated to cables or have caps installed on them to meet IP65 IP67 requirements Cover the unused connectors with the included plastic caps whenever water dust or dirt are present M12 BNC Cabling You can use the SHM125M BNCF and SHM125M BNCF RA cables with the FD 11634 The following figure shows the pinouts for the M12...

Page 18: ...dDAQ device Signal Input LEDs Each signal input connector has an LED Refer to Open Short Circuit Detection for information about troubleshooting open or shorted sensors Table 7 LED State Status LED State Connector Status Off Excitation off Red solid Open sensor or shorted sensor with excitation enabled Green solid IEPE sensor connected with excitation enabled Yellow blinking alternating User defin...

Page 19: ...ection even though the case of the sensor is grounded Floating Signal Sources Figure 12 Connecting Floating Signal Sources to the FieldDAQ Device Signal Source AI AI 2 4 Grounded Signal Sources To ensure proper operation make sure the voltage on the AI and AI connections adhere to the channel to earth ground safety voltage specifications listed in the FD 11634 Specifications Figure 13 Connecting G...

Page 20: ...E signal conditioning on a per channel basis on the FieldDAQ device When you enable IEPE signal conditioning the sensor generates a DC voltage offset that is dependent on its design enable AC coupling described in Input Coupling to remove this unwanted DC offset Open Short Circuit Detection When you enable IEPE signal conditioning the FieldDAQ device monitors each channel for open sensor and short...

Page 21: ...e Filtering out specific noise sources Analyzing signals in the time domain Control applications Refer to the FD 11634 Specifications for details on the amount of variation in the response you can expect for different input frequency ranges Frequency Response of FieldDAQ Filters The FieldDAQ device uses a combination of analog and digital filtering to provide an accurate representation of in band ...

Page 22: ...n the alias rejection and how signals are represented in the time domain for example step response Stopband The range of frequencies at which the filter attenuates input signals to its maximum attenuation level Ideally you want to choose a filter with a stopband that covers frequencies of noise sources that you do not want in your measurements Phase Response Input Delay Filters delay the input sig...

Page 23: ...ore flexibility when filtering out noise that is below one half of the sample rate However depending on your settings you may see alias components of higher frequency signals in your measurement that extend beyond one half of the sample rate due to the larger transition band Comb Has a smaller passband because its transition band starts early in the frequency range The comb filter has shorter grou...

Page 24: ...by a variable amount depending on their frequency Comb All input frequencies have the same amount of delay when going through the filter The comb filter has a shorter delay than the brickwall filter Choose this filter for applications where linear phase short delay or data correlation of different devices and configurations is required Figure 17 Comparing Typical Input Delay for FieldDAQ Filters C...

Page 25: ... The output signal does not show overshoot or undershoot Figure 18 Comparing Typical Step Response of FieldDAQ Filters Amplitude Time 1 0 Butterworth Comb Brickwall Rise Time Group Delay Undershoot Overshoot Refer to the FD 11634 Specifications for details on the amount of variation in the response you can expect for different input frequency ranges Data Rates You can use the 13 1072 MHz 12 8 MHz ...

Page 26: ...4 is considered a Delta Sigma device it contains multiple A D converters that require a high frequency oversample clock to produce accurate synchronized data The FieldDAQ device returns a sample on every Sample Clock pulse The oversample clock is used as the AI Sample Clock Timebase The FieldDAQ device supplies 13 1072 MHz 12 8 MHz 12 288 MHz and 10 24 MHz timebases By default NI DAQmx automatical...

Page 27: ...sed features in the NI DAQmx API Note To accurately synchronize Delta Sigma devices in two or more separate tasks you must specify the same sync pulse Otherwise a sync pulse is initiated by software implicitly even if time start triggers are specified for the tasks However for multidevice tasks the sync pulses and start triggers are automatically synchronized Time Based Triggers FieldDAQ devices f...

Page 28: ... Triggering topic in the NI DAQmx Help for more information on accessing time based features in the NI DAQmx API Timebases The following figure shows the FD 11634 clock routing circuitry and timebases Figure 20 Clock Routing Circuitry 13 1072 MHz Timebase 12 288 MHz Timebase 12 8 MHz Timebase Clock Generator Onboard 100 MHz Oscillator 10 24 MHz Timebase You can use the 13 1072 MHz 12 8 MHz 12 288 ...

Page 29: ...racy measurements Visit ni com info and enter fdsync Synchronization accuracy explained Visit ni com info and enter syncacc Synchronizing FieldDAQ and TSN Enabled Ethernet cDAQ Chassis to a PXI System Visit ni com info and enter fd1588 Ethernet Ports and Networking The Ethernet Network Interface transfers data between the FieldDAQ device and the network It gathers the data into TCP IP packets that...

Page 30: ...e BI_DC No Connect You can use the Ethernet ports to reset the FieldDAQ device to factory default settings Refer to Resetting the FieldDAQ to Factory Default Settings for more information Cap the Ethernet ports when not in use Ethernet LEDs Each Ethernet port has a green LED that indicates network activity and link speed Table 10 LED State Device Status LED State Device Status On Ethernet link Bli...

Page 31: ...using the FieldDAQ device To prevent these loops from disrupting the network the FieldDAQ device implements the IEEE 802 1Q Rapid Spanning Tree Protocol RSTP Using this protocol each FieldDAQ device can find the shortest path for incoming packets to reach the rest of the network When multiple paths exist this adds a form of redundancy If a link fails the protocol automatically switches to use the ...

Page 32: ...chronization Listed in MAX Not listed in MAX The switch MAC address is used to implement the following switch protocols IEEE 802 1AS 2011 Precision Time Protocol IEEE 802 1Q Rapid Spanning Tree Protocol RSTP implemented IEEE 1588 Delay Request Response Default Precision Time Protocol The switch MAC address only appears in packets exchanged between the switch embedded in the FieldDAQ device and the...

Page 33: ... cover long distances Disadvantages Any unpowered nodes and or node failure disrupts network communication Addition or removal of any node disrupts network communication Failure of any Ethernet cable and or improper cable termination disrupts network communication Network performance and synchronization affected when node count exceeds 15 Consider the Star Topology for systems that require a great...

Page 34: ... traffic patterns can make troubleshooting difficult Requires an external switch Note For information about daisy chaining power refer to Power Connectors and Wiring Star Topology In a star topology the host communicates directly with each node through the external switch You must use an external switch in a star topology for network synchronization you must use an external IEEE 802 1AS switch Red...

Page 35: ... and enter fdenet for information about exploiting link redundancy and automatically improving reliability Disadvantages Most costly of the recommended topologies Requires an external switch external IEEE 802 1AS switch for network synchronization Covers the least distance Note For information about daisy chaining power refer to Power Connectors and Wiring Other Topologies For information about de...

Page 36: ... best practices and requirements visit ni com info and enter fdenet Connecting to a Real Time Controller You can use the FieldDAQ device as expansion I O from certain NI Linux Real Time controllers Discover and configure the NI Linux Real Time controller in NI MAX then discover and configure the FieldDAQ device Note When using an NI Real Time controller as the host you can only use select controll...

Page 37: ...nect the FieldDAQ device directly to your computer Complete the following steps 1 Install the LabVIEW LabVIEW Real Time Module and controller driver software on the host machine as instructed in the getting started or quick start document for the Real Time controller 2 Install NI DAQmx on the host machine if the driver was not installed in step 1 a Download NI DAQmx from ni com downloads drivers C...

Page 38: ... turns on Refer to Power LED for information about Power LED status 8 To add the FieldDAQ to the software configuration on the Real Time target open NI MAX on the host computer In the MAX configuration tree expand Remote Systems your Real Time Controller Devices and Interfaces Network Devices 9 Click Add Network Device and then Find Network NI DAQmx Devices 10 In the Find Network NI DAQmx Devices ...

Page 39: ...cation or if an error occurred If an error occurs refer to ni com support daqmx 14 Run a Test Panel in MAX by expanding Devices and Interfaces Network Devices your FieldDAQ device right clicking the bank of connectors in your FieldDAQ device and selecting Test Panels If the test panel displays an error message refer to ni com support Click Close to exit the test panel Note When in use the FieldDAQ...

Page 40: ...r to the Finding a Network DAQ Device in MAX topic in the Measurement Automation Explorer Help for NI DAQmx Reserving the Device in MAX When the FieldDAQ device is connected to a network multiple users can access the device To perform any DAQ functionality on the device including reset and self test you must reserve the device in MAX In MAX an unreserved device or device reserved by another host a...

Page 41: ...e FieldDAQ to Factory Default Settings To reset your FieldDAQ device to factory default settings complete the following steps 1 Verify the power source is turned off 2 Connect Ethernet port 0 and port 1 with an Ethernet cable Figure 28 Connecting Port 0 and Port 1 0 10 100 1000 SYNC 1 LINK ACT 3 Turn on the power source to the device After about 15 seconds the STATUS LED blinks red indicating that...

Page 42: ...trate in any orientation if the ambient temperature is 75 C or less However to ensure proper functionality during use above 75 C you must mount the FieldDAQ device in the reference mounting configuration shown in the following figure Observe the following guidelines to mount the FieldDAQ device in the reference mounting configuration FD 11634 User Guide National Instruments 41 ...

Page 43: ...62 in thick and extends a minimum of 76 2 mm 3 in beyond all edges of the device 3 Observe the cooling dimensions in Mounting Requirements 4 Allow space for cabling clearance according to the Mounting Requirements Before using any mounting methods record the serial number from the back of the FieldDAQ device so that you can identify it in MAX You will be unable to read the serial number after you ...

Page 44: ...device for air circulation as shown in the following figure Figure 30 Cooling Dimensions 76 2 mm 3 00 in All Around Cooling Dimensions STATUS IN 10 A TOTAL 9 30 V FieldDAQ OUT 0 10 100 1000 LINK ACT SYNC 1 Allow the appropriate space in front of the device for cabling clearance as shown in the following figure FD 11634 User Guide National Instruments 43 ...

Page 45: ... vertical mounting configurations Figure 32 Ambient Temperature Locations Horizontal Mounting Configuration 25 4 mm 1 00 in 76 2 mm 3 00 in 25 4 mm 1 00 in 38 7 mm 1 50 in 76 2 mm 3 00 in 38 7 mm 1 50 in 76 2 mm 3 00 in 76 2 mm 3 00 in Measure the ambient temperature here Measure the ambient temperature here Measure the ambient temperature here Measure the ambient temperature here STATUS IN 10 A T...

Page 46: ...s For detailed dimensional drawings and 3D models visit ni com dimensions and search for FD 11634 Mounting the Device Directly on a Flat Surface For environments with high shock and vibration NI recommends mounting the FieldDAQ device directly on a flat rigid surface using the mounting holes on the device This mounting technique requires four M5 or 10 32 panhead or sockethead cap screws appropriat...

Page 47: ...1 184 0 mm 7 24 in 2 Align the device on the surface 3 Fasten the device to the surface using the M5 or 10 32 screws Tighten the screws to a maximum torque of 2 5 N m 25 0 lb in Figure 35 Fastening the Device to the Surface STATUS IN 10 A TOTAL 9 30 V FieldDAQ OUT 0 10 100 1000 LINK ACT SYNC 1 46 ni com FD 11634 User Guide ...

Page 48: ... and accuracy Mounting the Device on a DIN Rail The FD 11960 DIN rail mounting kit is an accessory you can use to mount a FieldDAQ device to a DIN rail The hardware in the FD 11960 DIN rail mounting kit includes a bracket panel a DIN rail clip four M5 x 10 mm screws four M5 washers and two 8 32 x 1 4 in screws Complete the following steps to install a FieldDAQ device onto a DIN rail using the FD 1...

Page 49: ...V 10 A TO TA L 3 2 1 4 5 1 Bracket panel 2 DIN rail clip 3 M5 x 10 mm screw 4 8 32 x 1 4 in screw 5 M5 washers Note You can also horizontally mount the FieldDAQ device to the DIN rail 3 Clip the device onto the DIN rail Figure 37 DIN Rail Clip Parts Locator 1 2 3 1 DIN rail clip 2 DIN rail spring 3 DIN rail 48 ni com FD 11634 User Guide ...

Page 50: ...ce For FieldDAQ firmware information and updates visit ni com info and enter the Info Code fdfw Maintenance If you need to clean your device wipe it with a dry towel Note M12 connectors must be mated to cables or have caps installed on them to meet IP65 IP67 requirements Cover the unused connectors with the included plastic caps whenever water dust or dirt are present FD 11634 User Guide National ...

Page 51: ...rolling measurement devices The following references to documents assume you have NI DAQmx 18 6 or later FieldDAQ The FD 11634 Quick Start packaged with your device describes how to install your NI DAQmx for Windows software how to set up your FieldDAQ device and confirm that your device is operating properly The FD 11634 Specifications lists all specifications for your FieldDAQ device Go to ni co...

Page 52: ...Real Time The Real Time Module Concepts book of the LabVIEW Real Time Module Help includes conceptual information about real time programming techniques application architectures and Real Time Module features you can use to create real time applications Refer to the Real Time Module Concepts before attempting to create a deterministic real time application LabWindows CVI The Data Acquisition book ...

Page 53: ...s using Visual C and Visual Basic NET without Measurement Studio Refer to the NI DAQmx Readme for specific versions supported ANSI C without NI Application Software The NI DAQmx Help contains API overviews and general information about measurement concepts Select Start All Programs National Instruments NI DAQmx NI DAQmx Help The NI DAQmx C Reference Help describes the NI DAQmx Library functions wh...

Page 54: ...FD 11634 User Guide National Instruments 53 ...

Page 55: ...ements EULAs and third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compliance for the NI global trade compliance policy and how to obtain relevant HTS codes ECCNs and other import export data NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR AN...

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