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Page 2
USER MANUAL AND SPECIFICATIONS
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C
DO NOT SEPARATE CABLES WHEN
ENERGIZED IN HAZARDOUS LOCATIONS
2
3
4
1
NI 9148
Ethernet Expansion Chassis for C Series Modules
This document describes how to connect the NI 9148 to a network and how to use the NI 9148
features. This document also contains specifications for the NI 9148.
Figure 1. NI 9148 Front Panel
1. LEDs
2. RJ-45 Ethernet Port
3. Power Connector
4. DIP Switches
Safety Guidelines
Operate the NI 9148 only as described in this document.
Caution Do not operate the NI 9148 in a manner not specified in this document.
Product misuse can result in a hazard. You can compromise the safety protection
built into the product if the product is damaged in any way. If the product is
damaged, return it to NI for repair.
Safety Guidelines for Hazardous Locations
The NI 9148 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous
locations; Class I, Zone 2, AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are installing the NI 9148 in a
potentially explosive environment. Not following these guidelines may result in serious injury
or death.
Caution Do not disconnect the power supply wires and connectors from the
controller unless power has been switched off.
Caution Do not disconnect I/O-side wires or connectors unless power has been
switched off or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched off or the area is
known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I, Division 2.
Caution For Division 2 and Zone 2 applications, install the system in an enclosure
rated to at least IP54 as defined by IEC/EN 60079-15.
Special Conditions for Hazardous Locations Use in Europe and
Internationally
The NI 9148 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO Certificate
No. 07 ATEX 0626664X and is IECEx UL 14.0089X certified. Each device is marked II
3G and is suitable for use in Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤
Ta ≤ 70 °C.
Caution You must make sure that transient disturbances do not exceed 140% of
the rated voltage.
Caution The system shall only be used in an area of not more than Pollution
Degree 2, as defined in IEC 60664-1.
Caution The system shall be mounted in an ATEX/IECEx-certified enclosure with
a minimum ingress protection rating of at least IP54 as defined in IEC/EN 60079-15.
Caution The enclosure must have a door or cover accessible only by the use of a
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) stated in the product specifications. These requirements
and limits provide reasonable protection against harmful interference when the product is
operated in the intended operational electromagnetic environment.
This product is intended for use in industrial locations. However, harmful interference may
occur in some installations, when the product is connected to a peripheral device or test object,
or if the product is used in residential or commercial areas. To minimize interference 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 National
Instruments could void your authority to operate it under your local regulatory rules.
Special Conditions for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for marine (shipboard) applications.
To verify Lloyd’s Register certification for a product, visit ni.com/certification and search for
the LR certificate, or look for the Lloyd’s Register mark on the product.
Caution In order to meet the EMC requirements for marine applications, install the
product in a shielded enclosure with shielded and/or filtered power and input/output
ports. In addition, take precautions when designing, selecting, and installing
measurement probes and cables to ensure that the desired EMC performance is
attained.
Unpacking the Kit
Caution To prevent electrostatic discharge (ESD) from damaging the device,
ground yourself using a grounding strap or by holding a grounded object, such as
your computer chassis.
1.Touch the antistatic package to a metal part of the computer chassis.
2.Remove the device from the package and inspect the device for loose components or any
other sign of damage.
Caution Never touch the exposed pins of connectors.
Note Do not install a device if it appears damaged in any way.
3.Unpack any other items and documentation from the kit.
Store the device in the antistatic package when the device is not in use.
•Two M4 or number 8 flathead screws (for mounting the chassis without one of the listed
mounting kits)
•A number 2 Phillips screwdriver
•Power supply
•Ethernet cable
Note Visit ni.com/info and enter the Info Code rdsoftwareversion to
determine which software you need to use the NI 9148.
Mounting the Chassis
You can mount the chassis in any orientation on a 35 mm DIN rail or on a panel. Use the DIN
rail mounting method if you already have a DIN rail configuration or if you need to be able to
quickly remove the chassis. Use the panel mount method for high shock and vibration
applications.
Your installation must meet the following requirements for space and cabling clearance:
•Allow 25.4 mm (1 in.) on the top and the bottom of the chassis for air circulation.
•Allow 50.8 mm (2 in.) in front of modules for cabling clearance.
The following sections give instructions for the mounting methods. Before using any of these
mounting methods, record the serial number from the back of the chassis. You will be unable
to read the serial number after you have mounted the chassis.
Caution Make sure that no I/O modules are in the chassis before mounting it.
Mounting the Chassis on a Panel
You can use the NI 9905 panel mount kit to mount the NI 9148 on a flat surface. Complete the
following steps to mount the NI 9148 on a panel.
1.Fasten the chassis to the panel mount kit using a number 2 Phillips screwdriver and two
You must use these screws because they are the correct depth and thread for the panel.
31.8 mm
(1.25 in.)
15.5 mm
(0.61 in.)
9.5 mm
(0.38 in.)
28.1 mm
(1.11 in.)
63.5 mm
(2.50 in.)
88.1 mm
(3.47 in.)
311.2 mm
(12.25 in.)
330.2 mm
(13.00 in.)
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C
Tighten the screws to a maximum torque of 1.3 N · m (11.5 lb · in.).
Figure 5. Installing the Panel Mount Accessory on the NI 9148
Figure 6. Dimensions of NI 9148 with Panel Mount Accessory Installed
2.Fasten the NI 9905 panel to the wall using the screwdriver and screws that are
appropriate for the wall surface. The maximum screw size is M4 or number 8.
Caution Make sure that no I/O modules are in the chassis before removing it
from the panel.
Mounting the Chassis on a DIN Rail
You can order the NI 9915 DIN rail mount kit to mount the NI 9148 on a DIN rail. You need
one clip for mounting the chassis on a standard 35 mm DIN rail. Complete the following steps
to mount the chassis on a DIN rail.
The following figure shows the mechanical dimensions of C Series I/O modules.
Figure 9. C Series I/O Module, Front and Side View with Dimensions
1.Make sure that no I/O-side power is connected to the I/O module. If the system is in a
nonhazardous location, the chassis power can be on when you install I/O modules.
2.Align the I/O module with an I/O module slot in the chassis as shown in the following
figure. The module slots are labeled 1 to 8, left to right.
Figure 10. Installing an I/O Module in the Chassis
1
2
1. Insertion Groove
2. Latch
3.Squeeze the latches and insert the I/O module into the module slot.
4.Press firmly on the connector side of the I/O module until the latches lock the I/O module
into place.
5.Repeat these steps to install additional I/O modules.
Removing I/O Modules from the Chassis
Complete the following steps to remove a C Series I/O module from the chassis.
1.Make sure that no I/O-side power is connected to the I/O module.
2.Squeeze the latches on both sides of the module and pull the module out of the chassis.
Connecting the Chassis to a Network
Connect the chassis to an Ethernet network using Ethernet port 1 on the front panel. Use a
standard Category 5 (CAT-5) or better shielded, twisted-pair Ethernet cable to connect the
chassis to an Ethernet hub or a computer.
Caution To prevent data loss and to maintain the integrity of your Ethernet
C
NC
C
V
2
1
2
installation, do not use a cable longer than 100 m.
If you need to build your own cable, refer to the Cabling section for more information about
Ethernet cable wiring connections.
Note You will configure the IP settings as described in the Configuring IP Settings
section, after connecting power and powering the chassis on.
The host computer communicates with the chassis over a standard Ethernet connection. If the
host computer is on a network, you must configure the chassis on the same subnet as the host
computer. If neither the host computer nor the chassis is connected to a network, you can
connect the two directly using a crossover cable.
If you want to use the chassis on a subnet other than the one the host computer is on, first
connect the chassis on the same subnet as the host computer. Use DHCP to assign an IP
address or reassign a static IP address for the subnet where you want it to be and physically
move it to the other subnet.
Wiring Power to the Chassis
The NI 9148 requires an external power supply that meets the specifications in the Power
Requirements section.
The NI 9148 filters and regulates the supplied power and provides power for all of the I/O
modules. The NI 9148 has one layer of reverse-voltage protection. Complete the following
steps to connect a power supply to the chassis.
1.Ensure that the power supply is turned off.
2.Connect the positive lead of the power supply to the V terminal of the COMBICON
power connector shipped with the NI 9148, and tighten the terminal screw. The following
figure shows the terminal screws, which secure the wires in the screw terminals, and the
connector screws, which secure the power connector on the controller.
Figure 11. COMBICON Power Connector
1. Terminal Screw
2. Connector Screws
3.Connect the negative lead of the power supply to the C terminal of the power connector
and tighten the terminal screw.
4.Install the power connector on the front panel of the NI 9148 and tighten the connector
screws.
5.Turn on the power supply.
Powering On the NI 9148
When you apply power to the NI 9148, the chassis runs a power-on self test (POST). During
the POST, the Power and Status LEDs turn on. The Status LED turns off, indicating that the
POST is complete. If the LEDs do not behave in this way when the system powers on, refer to
the Understanding LED Indications section.
Chassis Startup Options
The following table lists the startup options available for the NI 9148. These options determine
how the chassis behaves when it starts up in various conditions. Use the RIO Device Setup
utility to select startup options. Access the RIO Device Setup utility by selecting Start»AllPrograms»National Instruments»NI-RIO»RIO Device Setup.
Table 1. NI 9148 Reset Options
Startup OptionsBehavior
Do Not Autoload VIDoes not load the FPGA bit stream from flash memory.
Autoload VI on device
powerup
Autoload VI on device rebootLoads the FPGA bit stream from flash to the FPGA when
Loads the FPGA bit stream from flash memory to the FPGA
when the chassis powers on.
you reboot the chassis either with or without cycling power.
Configuring IP Settings
When you power on the NI 9148 for the first time, it boots into safe mode because there is no
software installed on it. This section describes how to configure the IP settings and install
software on the chassis.
1.Launch MAX on the host computer and expand Remote Systems in the MAX
configuration tree. MAX lists the NI 9148 as the model name of the chassis followed by
the serial number, for example, NI9148-XXXXXXXX.
The chassis automatically attempts to connect to the network using DHCP. If DHCP is
not available, the chassis connects to the network with a link-local IP address with the
form 169.254.x.x. You must connect the chassis directly to the host computer to
configure it in this state.
2.Select the chassis under Remote Systems to see the Network Settings tab in the middle
pane of MAX.
4.Select settings for the chassis in the IP Settings section, then click Apply.
1 2
OFF
SAFE MODE
IP RESET
Note For information about configuring network settings, refer to the
Configuring Network Settings book of the MAX Remote Systems Help. In
MAX, click Help»Help Topics»Remote Systems. On the Contents tab,
browse to LabVIEW Real-Time Target Configuration»ConfiguringNetwork Settings.
5.When you click Apply, you are prompted to reboot the chassis for the changes to take
effect. Click Yes. You can also reboot the chassis by right-clicking the name underRemote Systems and selecting Reboot.
6.After rebooting, the chassis appears under Remote Systems with the assigned name.
Expand the chassis and select Software.
7.Click Add/Remove Software in the toolbar to launch the LabVIEW Real-Time Software
Wizard.
8.Install the Recommended Software Set that appears in the LabVIEW Real-Time Software
Wizard.
For more information about configuring the chassis in MAX, refer to the MAX Help. For
information about installing and using LabVIEW FPGA, refer to the LabVIEW FPGA ModuleRelease and Upgrade Notes.
Configuring DIP Switches
Both DIP switches are in the OFF position when the chassis is shipped from National
Instruments.
Figure 12. DIP Switches
SAFE MODE Switch
Safe mode is for troubleshooting, updating configuration, and installing software. Keep the
SAFE MODE switch in the OFF position during normal operation. If the switch is in the ON
position at startup, the NI 9148 launches only the essential services required for updating
configuration and installing software.
Push the SAFE MODE switch to the ON position if the software on the chassis is corrupted.
Even if the switch is not in the ON position, if there is no software installed on the chassis, the
chassis automatically boots into safe mode. The SAFE MODE switch must be in the ON
position to reformat the drive on the chassis. Refer to the Measurement & AutomationExplorer Help for more about installing software and reformatting the drive.
IP RESET Switch
Push the IP RESET switch to the ON position and reboot the chassis to reset the IP address
and other TCP/IP settings of the chassis to the factory defaults. Refer to the Troubleshooting
Network Communication section for more information about resetting the IP address. You also
POWER
USER FPGA1
STATUS
can push this switch to the ON position to unlock a chassis that was previously locked in
MAX.
Understanding LED Indications
The following figure shows the NI 9148 chassis LEDs.
Figure 13. NI 9148 LEDs
POWER LED Indicators
The following table lists the POWER LED indicators.
Table 2. POWER LED Indicators
LED Color LED PatternIndication
GreenSolidThe NI 9148 is powered on and the connected power supply is
adequate.
—OffThe NI 9148 is powered off.
User LED
You can define the USER FPGA1 LED to meet the needs of your application. The following
table lists the USER FPGA1 LED indicators.
Table 3. User LEDs
LEDLED ColorDescription
USER FPGA1 Green/Yellow Use the LabVIEW FPGA Module and NI-RIO Device
Drivers software to define the USER FPGA1 LED. Use the
USER FPGA1 LED to help debug your application or
retrieve application status. Refer to the LabVIEW Help for
information about programming this LED.
STATUS LED
The STATUS LED is off during normal operation. The NI 9148 indicates specific error
conditions by flashing the STATUS LED a certain number of times every few seconds, as
shown in the following table.
1The chassis is unconfigured. Use MAX to configure the chassis. Refer to
the Measurement & Automation Explorer Help for information about
configuring the chassis.
2The chassis has detected an error in its software. This usually occurs
when an attempt to upgrade the software is interrupted. Reinstall
software on the chassis. Refer to the Measurement & AutomationExplorer Help for information about installing software on the chassis.
3The chassis is in safe mode because the SAFE MODE DIP switch is in
the ON position. Refer to the Configuring DIP Switches section for
information about the SAFE MODE DIP switch.
4The software has crashed twice without rebooting or cycling power
between crashes. This usually occurs when software on the chassis is
corrupted. Reinstall software on the chassis. If the problem persists,
contact National Instruments.
Indication
Continuous
flashing or solid
The device may be configured for DHCP but unable to get an IP address
because of a problem with the DHCP server. Check the network
connection and try again. If the problem persists, contact National
Instruments.
Troubleshooting Network Communication
If the NI 9148 cannot communicate with the network, you can perform the following
troubleshooting steps.
1.Move the IP RESET switch to the ON position.
2.Disconnect and reconnect chassis power.
3.Move the IP RESET switch to the OFF position.
4.Configure the IP and other network settings in MAX.
Restoring the BIOS Network Settings
If you are unable to fix network communication with the network settings restored, you can
restore the BIOS network settings of the chassis. Refer to the Configuring IP Settings section
for information about the BIOS network settings for different chassis revisions. Complete the
following steps to restore the BIOS network settings of the chassis.
1.Move the IP RESET and SAFE MODE switches to the ON position.
3.Move the IP RESET and SAFE MODE switches to the OFF position.
4.Configure the IP and other network settings in MAX.
Caution If the chassis is restored to the BIOS network settings, the LabVIEW
run-time engine does not load. You must reconfigure the network settings and
restart the chassis for the LabVIEW run-time engine to load.
NI 9148 Specifications
This document lists the specifications for the NI 9148 Ethernet Expansion Chassis. The
following specifications are typical for the -40 °C to 70 °C operating temperature range unless
otherwise noted.
Caution Do not operate the NI 9148 in a manner not specified in this document.
Product misuse can result in a hazard. You can compromise the safety protection
built into the product if the product is damaged in any way. If the product is
damaged, return it to NI for repair.
Network
Network interface10BaseT and 100BaseTX Ethernet
CompatibilityIEEE 802.3
Communication rates10 Mbps, 100 Mbps, auto-negotiated
Maximum cabling distance100 m/segment
Reconfigurable FPGA
TypeXilinx Spartan-3 2M
Number of logic cells46,080
Available embedded RAM720 kbits
Power Requirements
Voltage input range19 V to 30 V
Maximum power input20 W maximum
Maximum power consumption20 W maximum
Physical Characteristics
If you need to clean the NI 9148, wipe it with a dry towel.
Tip For two-dimensional drawings and three-dimensional models of the NI 9148,
visit ni.com/dimensions and search by module number.
Wire strip length6 mm (0.24 in.) of insulation stripped from the
end
Temperature rating85 °C
Torque for screw terminals0.20 N · m to 0.25 N · m (1.8 lb · in. to
2.2 lb · in.)
Wires per screw terminalOne wire per screw terminal
Connector securement
Securement typeScrew flanges provided
Torque for screw flanges0.3 N · m to 0.4 N · m (2.7 lb · in. to
3.5 lb · in.)
Safety Voltages
Connect only voltages that are within the following limits:
V terminal to C terminal35 V maximum, Measurement Category I
Measurement Category I is for measurements performed on circuits not directly connected to
the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live
electrical supply system that powers equipment. This category is for measurements of voltages
from specially protected secondary circuits. Such voltage measurements include signal levels,
special equipment, limited-energy parts of equipment, circuits powered by regulated lowvoltage sources, and electronics.
Caution Do not connect the NI 9148 to signals or use for measurements within
Measurement Categories II, III, or IV.
Note Measurement Categories CAT I and CAT O are equivalent. These test and
measurement circuits are not intended for direct connection to the MAINS building
installations of Measurement Categories CAT II, CAT III, or CAT IV.
Safety and Hazardous Locations Standards
This product is designed to meet the requirements of the following electrical equipment safety
standards for measurement, control, and laboratory use:
Note For UL and other safety certifications, refer to the product label or the Online
Product Certification section.
Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for sensitive electrical
equipment for measurement, control, and laboratory use:
•EN 61326-2-1 (IEC 61326-2-1): Class A emissions; Industrial immunity
•EN 55011 (CISPR 11): Group 1, Class A emissions
•AS/NZS CISPR 11: Group 1, Class A emissions
•FCC 47 CFR Part 15B: Class A emissions
•ICES-001: Class A emissions
Note In the United States (per FCC 47 CFR), Class A equipment is intended for
use in commercial, light-industrial, and heavy-industrial locations. In Europe,
Canada, Australia and New Zealand (per CISPR 11) Class A equipment is intended
for use only in heavy-industrial locations.
Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical
equipment that does not intentionally generate radio frequency energy for the
treatment of material or inspection/analysis purposes.
Note For EMC declarations and certifications, and additional information, refer to
the Online Product Certification section.
CE Compliance
This product meets the essential requirements of applicable European Directives, as follows:
Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance
information. To obtain product certifications and the DoC for this product, visit ni.com/
certification, search by model number or product line, and click the appropriate link in the
NI is committed to designing and manufacturing products in an environmentally responsible
manner. NI recognizes that eliminating certain hazardous substances from our products is
beneficial to the environment and to NI customers.
For additional environmental information, refer to the Minimize Our Environmental Impact
web page at ni.com/environment. This page contains the environmental regulations and
directives with which NI complies, as well as other environmental information not included in
this document.
EU Customers At the end of the product life cycle, all NI products must be
disposed of according to local laws and regulations. For more information about
how to recycle NI products in your region, visit ni.com/environment/weee.
Battery Replacement and Disposal
Battery Directive This device contains a long-life coin cell battery. If you need to
replace it, use the Return Material Authorization (RMA) process or contact an
authorized National Instruments service representative. For more information about
compliance with the EU Battery Directive 2006/66/EC about Batteries and
Accumulators and Waste Batteries and Accumulators, visit ni.com/environment/
batterydirective.
电子信息产品污染控制管理办法(中国 RoHS)
中国客户 National Instruments 符合中国电子信息产品中限制使用某些有害物
质指令(RoHS)。关于 National Instruments 中国 RoHS 合规性信息,请登录
ni.com/environment/rohs_china。(For information about China RoHS
compliance, go to ni.com/environment/rohs_china.)
Worldwide Support and Services
The NI website is your complete resource for technical support. At ni.com/support, you have
access to everything from troubleshooting and application development self-help resources to
email and phone assistance from NI Application Engineers.
Visit ni.com/services for NI Factory Installation Services, repairs, extended warranty, and
other services.
Visit ni.com/register to register your NI product. Product registration facilitates technical
support and ensures that you receive important information updates from NI.
A Declaration of Conformity (DoC) is our claim of compliance with the Council of the
European Communities using the manufacturer’s declaration of conformity. This system
affords the user protection for electromagnetic compatibility (EMC) and product safety. You
can obtain the DoC for your product by visiting ni.com/certification. If your product supports
calibration, you can obtain the calibration certificate for your product at ni.com/calibration.
NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas,
78759-3504. NI also has offices located around the world. For telephone support in the United
States, create your service request at ni.com/support or dial 1 866 ASK MYNI (275 6964). For
telephone support outside the United States, visit the Worldwide Offices section of ni.com/
niglobal to access the branch office websites, which provide up-to-date contact information,
support phone numbers, email addresses, and current events.
Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on NI trademarks. Other product and
company names mentioned herein are trademarks or trade names of their respective companies. For patents covering NI
products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the
National Instruments Patent Notice at ni.com/patents. You can find information about end-user license agreements (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 ANY ERRORS. U.S. Government Customers: The data contained in
this manual was developed at private expense and is subject to the applicable limited rights and restricted data rights as set forth
in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.