National Instruments CompactRIO cRIO-9066 User manual

OPERATING INSTRUCTIONS AND
SPECIFICATIONS
CompactRIO cRIO-9066 and
cRIO-9067
Embedded Real-Time Controller with Reconfigurable FPGA for
C Series Modules
This document describes how to get started with the National Instruments cRIO-9066 and
cRIO-9067, referred to inclusively as the cRIO-906x. This document contains device
specifications and information about installing hardware, configuring device I/O, powering the
device, and connecting the device to a network.
Figure 1. CompactRIO cRIO-906xFront Panel
1 RS-232 Serial Port
2LEDs
3 USB Device Port
4 RJ-45 Ethernet Port 2 (Not available on the cRIO-9066)
5 RJ-45 Ethernet Port 1
6 USB Host Port
7 Power Connector
8 Reset Button
™
POWERPOWER
STATUSSTATUS
USER1USER1
USER FPGA1USER FPGA1
RESETRESET
INPUTINPUT
9-30 V9-30 V
25 W MAX25 W MAX
ACT/ACT/
LINKLINK
10/100/10/100/
10001000
2
1
ACT/ACT/
LINKLINK
10/100/10/100/
10001000
DO NOT SEPARATE CABLES WHEN DO NOT SEPARATE CABLES WHEN
ENERGIZED IN HAZARDOUS LOCATIONS ENERGIZED IN HAZARDOUS LOCATIONS
V
C
POWERPOWER
STATUSSTATUS
USER1USER1
USER FPGA1USER FPGA1
RESETRESET
INPUTINPUT
9-30 V9-30 V
25 W MAX25 W MAX
1
ACT/
ACT/
LINKLINK
10/100/10/100/
10001000
DO NOT SEPARATE CABLES WHEN DO NOT SEPARATE CABLES WHEN
ENERGIZED IN HAZARDOUS LOCATIONS ENERGIZED IN HAZARDOUS LOCATIONS
V
C
7
8
1
6
7
8
1
3
5
2
3
4
5
2
6

2|ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Safety Guidelines
Caution Do not operate the cRIO-906xin a manner not specified in these operating
instructions. 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 National Instruments for repair.
Safety Guidelines for Hazardous Locations
The cRIO-906xis suitable for use in only Class I, Division 2, Groups A, B, C, D, T4 hazardous
locations; Class 1, Zone 2, AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and
nonhazardous locations. Follow these guidelines if you are installing the cRIO-906xin 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 Substitution of components may impair suitability for Class I, Division 2.
Caution For Zone 2 applications, install the CompactRIO system in an enclosure
rated to at least IP 54 as defined by IEC 60529 and EN 60529.
Caution The USB port requires NI industrial USB cables with locking screws, NI
part number 152166-XX or 15788A-01. The cable must pass through conduit or
cable gland to a nonhazardous location. Do not disconnect the cable unless the
cRIO-906xis powered off or the area is known to be nonhazardous.
Special Conditions for Hazardous Locations Use in Europe
Some chassis have been evaluated as Ex nA IIC T4 Gc equipment under DEMKO Certificate
No. 12 ATEX 1202658X. Each such chassis is marked II 3G and is suitable for use in Zone 2
hazardous locations in ambient temperatures of -20 °C ≤Ta ≤55 °C.
Caution You must ensure that transient disturbances do not exceed 140% of the
rated voltage.
Caution Mount the system in an ATEX certified enclosure with a minimum ingress
protection rating of at least IP 54 as defined in IEC/EN 60529 and use the system in
an environment of not more than Pollution Degree 2.
Caution The enclosure must have a door or cover accessible only by the use of a
tool.

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |3
Electromagnetic Compatibility Guidelines
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 modifications to the product not expressly approved by National Instruments
could void your authority to operate it under your local regulatory rules.
Caution To ensure the specified EMC performance, operate this product only with
shielded cables and accessories.
Special Guidelines 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 label.
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.

4|ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
What You Need to Install CompactRIO
Reconfigurable Embedded Hardware
NI cRIO-906xreconfigurable embedded chassis with integrated intelligent real-time
controller
C Series I/O modules
Panel, DIN rail, or desktop mounting kit
Three M4 or number 8 flathead screws (for mounting the chassis without one of the listed
mounting kits)
A number 2 Phillips screwdriver
Power supply1
USB A-to-B cable
Caution National Instruments recommends using a locking USB cable, such as
part number 157788-01, in order to meet the shock and vibration specifications of this
product.
Category 5 (CAT-5) or better shielded, twisted-pair Ethernet cable
Host computer running a Windows operating system, with the following NI software
installed in the following order:
• LabVIEW 20142or later
• LabVIEW Real-Time (RT) Module 2014 2or later
• LabVIEW FPGA Module 2014 2, 3 or later
• NI-RIO Device Drivers 14.0 2or later
1 Refer to the Power Requirements section.
2 Visit ni.com/info and enter the Info Code rdsoftwareversion to view the latest list of software
you can use with your device.
3 Required to program on-board FPGA.

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |5
Mounting the Chassis
In order to obtain the maximum allowable ambient temperature as specified in the
Environmental section of this document, you must mount the chassis horizontally on a flat,
vertical, metallic surface such as a panel or wall. You can mount the chassis directly to the
surface or you can use the NI Panel Mounting Kit. You can also mount the chassis in other
orientations, on a nonmetallic surface, on a 35-mm DIN rail, on a desktop, or in a rack. Mounting
the chassis in these or other configurations can reduce the maximum allowable ambient
temperature and can affect the typical accuracy of modules in the chassis. Figure 2 shows the
chassis mounted horizontally.
Figure 2. cRIO-906xMounted Horizontally
Figures 3 to 5 show the bottom, front, and side views with the dimensions of the chassis.
Note For more information about how different mounting configurations can cause
temperature derating, visit ni.com/info and enter the Info Code criomounting.
Note For more information about typical accuracy specifications for modules, visit
ni.com/info and enter the Info Code criotypical.
Note Measure the ambient temperature at each side of the chassis, 63.5 mm
(2.5 in.) from the side and 25.4 mm (1 in.) forward from the rear of the chassis, as
shown in Figure 3.
Caution Your installation must meet the following requirements for space and
cabling clearance:
• Allow 50.8 mm (2 in.) on the top and bottom of the chassis for air circulation,
as shown in Figure 4.
• Allow 50.8 mm (2 in.) in front of modules for cabling clearance for common
connectors, such as the 10-terminal, detachable screw terminal connector, as
shown in Figure 3.
Note For information about the minimum cabling clearance for C Series modules
with other connector types, visit ni.com/info and enter the Info Code
rdcrioconn.
Up

6|ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Figure 3. cRIO-906xBottom View with Dimensions
Figure 4. cRIO-906xFront View with Dimensions
Figure 5. cRIO-906xSide View with Dimensions
Note For more information about the dimensions of the system, including detailed
dimensional drawings, visit ni.com/dimensions.
1 Chassis Grounding Screw 2 Location for Measuring Ambient Temperature
62.3mm
(2.45 in.)
25.4 mm
(1.00 in.)
1
2
2
63.5 mm
(2.50 in.)
Cabling Clearance
50.8mm (2.00 in.)
29.1 mm
(1.14 in.)
50.8mm
(2.00 in.)
25.4 mm
(1.00 in.)
63.5 mm
(2.50 in.)
272.8mm
(10.74 in.)
88.1 mm
(3.47 in.)
47.2 mm
(1.86 in.)
141.7 mm
(5.58in.)
30.8mm
(1.21 in.)
47.0 mm
(1.85 in.)
4.1 mm
(0.16 in.)
44.1 mm
(1.74 in.) 29.3mm
(1.15 in.)
14.1 mm
(0.55 in.)
44.1 mm
(1.73in.)

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |7
Note For more information about mounting the chassis in environments with high
shock and vibration, visit ni.com/info and enter the Info Code criomounting.
The following sections contain 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 Ensure that no I/O modules are in the chassis before mounting it.
Mounting the Chassis Directly on a Flat Surface Using
the Mounting Holes
For environments with high shock and vibration, National Instruments recommends mounting
the chassis directly on a flat, rigid surface using the mounting holes in the chassis. Complete the
following steps to mount the chassis.
1. Use the dimensions shown in Figure 4 to prepare the surface for mounting the chassis.
2. Align the chassis on the surface.
3. Fasten the chassis to the surface using three M4 or number 8 screws appropriate for the
surface, as shown in Figure 6. Screws must be longer than 19 mm (0.75 in.) to pass all the
way through the chassis. National Instruments does not provide these screws with the
chassis.
Figure 6. Mounting the cRIO-906xDirectly on a Flat Surface

8|ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Mounting the Chassis Using the NI Panel Mounting Kit
You can use the NI panel mounting kit, part number 782863-01, to mount the chassis on a flat
surface. Ensure there is sufficient surface area prior to mounting by referring to the dimensions
shown in Figure 7.
Figure 7. Dimensions of cRIO-906xwith Panel Mounting Plate Installed
Complete the following steps to mount the chassis using the mounting kit.
1. Fasten the panel mounting plate to the chassis using a number 2 Phillips screwdriver and
three M4 ×23 screws, as shown in Figure 8. National Instruments provides these screws
with the panel mounting kit. You must use these screws because they are the correct depth
and thread for the panel mounting plate. Tighten the screws to a maximum torque of
1.3 N · m (11.5 lb · in.).
Figure 8. Installing the Panel Mounting Plate on the cRIO-906x
2. Fasten the panel mounting plate to the surface using the screwdriver and screws that are
appropriate for the surface. The maximum screw size is M5 or number 10.
355.6 mm
(14.00 in.)
336.5 mm
(13.25 in.)
9.5 mm
(0.38 in.)
17.6 mm
(0.69 in.)
88.1 mm
(3.47 in.)
31.7 mm
(1.25 in.)
63.5 mm
(2.50 in.)
7.2 mm
(0.29 in.)

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |9
Caution Ensure that no I/O modules are in the chassis before removing it from the
surface.
Mounting the Chassis on a DIN Rail
You can use the NI 9915 DIN rail mounting kit, part number 779018-01, to mount the chassis
on a standard 35-mm DIN rail. Complete the following steps to mount the chassis on a DIN rail.
1. Fasten the DIN rail clip to the chassis using a number 2 Phillips screwdriver and
two M4 ×25 flathead screws, as shown in Figure 9. National Instruments provides these
screws with the DIN rail mounting kit. Tighten the screws to a maximum torque of
1.3N·m(11.5lb·in.).
Figure 9. Installing the DIN Rail Clip on the cRIO-906x
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail clip, as shown in
Figure 10.
Figure 10. One Edge of the DIN Rail Inserted in a Clip
1 DIN Rail Clip 2 DIN Rail 3 DIN Rail Spring
3
2
1

10 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
3. Press down firmly on the chassis to compress the spring until the clip locks in place on the
DIN rail.
Caution Ensure that no I/O modules are in the chassis before removing it from the
DIN rail.
Mounting the Chassis on a Desktop
You can use the NI 9901 desktop mounting kit to mount the chassis on a desktop. You must
install the adapter bracket using two M3 × 20 screws. The adapter bracket and the screws are
included in the kit. Refer to the NI 9901 documentation for information about mounting the
chassis on a desktop.
Installing C Series I/O Modules in the Chassis
Figure 11 shows the mechanical dimensions of C Series I/O modules.
Figure 11. C Series I/O Module, Front and Side View with Dimensions
Complete the following steps to install a C Series I/O module in the chassis.
1. Ensure 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 Figure 12. The
module slots are labeled 1 to 8, left to right.
88.1 mm
(3.47 in.)
70.7 mm
(2.78in.)
22.9 mm
(0.90 in.)

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |11
Figure 12. Installing an I/O Module in the Chassis
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. Ensure 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 remove I/O modules.
2. Squeeze the latches on both sides of the module and pull the module out of the chassis.
Grounding the Chassis
You must connect the chassis grounding terminal to the grounding electrode system of your
facility. Complete the following steps to ground the chassis:
1. Attach a ring lug to a 2.08 mm2(14 AWG) or larger wire.
2. Remove the grounding screw from the grounding terminal on the right side of the chassis.
Refer to Figure 3 for the location of the grounding screw.
3. Attach the ring lug to the grounding terminal.
4. Tighten the grounding screw to 0.5 N · m (4.4 lb · in.) of torque.
5. Attach the other end of the wire to the grounding electrode system of your facility using a
method appropriate for the application.
1 Insertion Groove 2Latch
1
2

12 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Caution If you use shielded cabling to connect to a C Series I/O module with a
plastic connector, you must attach the cable shield to the chassis grounding terminal
using 1.31 mm2(16 AWG) or larger wire. Attach a ring lug to the wire and attach the
wire to the chassis grounding terminal. Solder the other end of the wire to the cable
shield. Use shorter wire for better EMC performance.
For more information about ground connections, visit ni.com/info and enter the Info Code
emcground.
Wiring Power to the Chassis
The cRIO-906x requires an external power supply that meets the specifications in the Power
Requirements section. The cRIO-906x filters and regulates the supplied power and provides
power for all I/O modules. The cRIO-906xhas one layer of reverse-voltage protection. Complete
the following steps to connect a power supply to the chassis.
1. Connect the positive lead of the power supply to the V terminal of the COMBICON power
connector shipped with the chassis, and tighten the terminal screw. Figure 13 shows the
terminal screws, which secure the wires in the screw terminals, and the screw flanges,
which secure the power connector on the front panel.
Figure 13. COMBICON Power Connector
2. Connect the negative lead of the power supply to the C terminal of the power connector and
tighten the terminal screw.
3. Install the power connector on the front panel of the chassis and tighten the screw flanges.
Powering On the cRIO-906x
When you apply power to the cRIO-906x, the controller starts up. The Power and Status LEDs
turn on briefly, and then the Status LED turns off. If the LEDs do not behave in this way when
the system powers on, refer to the Understanding LED Indications section.
Note After the initial powerup, you must install software on the chassis and
configure system settings in Measurement & Automation Explorer (MAX) as
described in the Configuring the System in MAX section of this document.
1 Terminal Screws 2 Screw Flanges
C
V
2
2
1

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |13
You can configure the chassis to launch an embedded stand-alone LabVIEW Real-Time
application each time you boot the controller. Refer to the Running a Stand-Alone Real-Time
Application (RT Module) topic of the LabVIEW Help for more information.
If you have downloaded a bitfile to the chassis, it will be autoloaded by default at startup. If you
want to disable bitfile autoloading, use the Disable FPGA Startup App setting in MAX.
Controller Startup Options
You can configure controller startup options in MAX. Select the controller under Remote
Systems in the MAX configuration tree and click the System Settings tab. You can configure
the following options under Startup Settings.
Safe Mode
When you reboot the controller with this setting on, the controller starts without launching
LabVIEW Real-Time or any startup applications. In safe mode the controller launches only the
services necessary for updating configuration and installing software.
Console Out
When you reboot the controller with this setting on, the controller redirects output to the RS-232
serial port. You can use a serial-port terminal program to read the IP address and firmware
version of the controller. Use a null-modem cable to connect the serial port to a computer. Ensure
that the serial-port terminal program is configured to the following settings:
• 115,200 bits per second
• Eight data bits
• No parity
• One stop bit
• No flow control
Disable RT Startup App
When you reboot the controller with this setting on, LabVIEW Real-Time startup applications
do not run.
Enable Secure Shell (SSH) Login
When you reboot the controller with this setting on, sshd starts on the controller. Starting sshd
enables logging in over SSH, an encrypted communication protocol. For information about SSH,
visit ni.com/info and enter the Info Code openssh.
Disable FPGA Startup App
When you reboot the controller with this setting on, FPGA applications do not autoload.
Caution When you reset the cRIO-906xcontroller either programmatically or by
using the Reset button, you also reset the FPGA. All FPGA I/O lines are tri-stated
after a reset, and will enter predefined states once loaded.

14 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Battery
The cRIO-906xcontains a lithium cell battery that stores the system clock information when the
system is powered off. A slight drain on the battery occurs when power is applied to the
cRIO-906xpower connector. The rate at which the battery drains when power is disconnected
depends on the ambient storage temperature. For longer battery life, store the cRIO-906xat
10 °C to 40 °C. Refer to the Battery section of the specifications for the expected battery
lifetime.
If the battery is dead, the system still starts, but the system clock resets to the date and time of
the BIOS release. The battery is not user-replaceable. If you need to replace the battery, please
contact National Instruments.
Configuring the System in MAX
Complete the following steps to configure the system for the first time in MAX:
1. Use a USB A-to-B cable to connect the USB device port of the cRIO-906xto a USB port
on the host computer. The device driver software automatically installs on the host
computer.
Caution National Instruments recommends using a locking USB cable, such as
part number 157788-01, in order to meet the shock and vibration specifications of this
product.
If the device driver software installation fails, refer to the What You Need to Install
CompactRIO Reconfigurable Embedded Hardware and verify that you have the
appropriate NI software installed on the host computer before trying again.
Note Alternatively, you can connect the cRIO-906xto the host computer using the
RJ-45 Ethernet port. The controller automatically attempts to connect to the network
using DHCP. If the controller cannot obtain an IP address, it connects to the network
with a link-local IP address with the form 169.254.x.x.
2. Launch MAX on the host computer.
3. Expand Remote Systems in the MAX configuration tree and find the system. MAX lists
the system as the model name followed by the serial number, such as,
NI-cRIO-9066-1856AAA.
Note If you are connecting through the RJ-45 Ethernet port instead of the USB
device port and cannot find the system in the MAX configuration tree, refer to the
Troubleshooting Network Communication section of this document.
4. Right-click the system and select Web Configuration to open the Web Configuration
window.
5. Click the Security Configuration icon to open the Security Configuration window.

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |15
6. Click Login.
7. Enter admin for the user name, leave the password blank, and click OK.
8. Set your password.
a. Click Change Password.
b. Enter and re-enter the new password, click OK, and click Save.
c. A message warns that the password is changing and you must log in again. Click OK.
9. Install software on the controller.
a. Expand the controller under Remote Systems in MAX and select Software.
b. Click Add/Remove Software in the toolbar to launch the LabVIEW Real-Time
software wizard.
c. Install LabVIEW Real-Time software and device drivers on the controller.
After software installation, the controller automatically reboots. You can now program it using
LabVIEW Real-Time. For information about configuring the controller to launch an application,
refer to LabVIEW Help.
Connecting the System to a Network
Connect the chassis to an Ethernet network using RJ-45 Ethernet port 1 on the controller front
panel. Use a standard Category 5 (CAT-5) or better shielded, twisted-pair Ethernet cable to
connect the chassis to an Ethernet switch or directly to a computer.
Caution To prevent data loss and to maintain the integrity of your Ethernet
installation, do not use a cable longer than 100 m.
Connecting Serial Devices to the cRIO-906x
The cRIO-906x has one RS-232 serial port to which you can connect devices such as displays
or input devices. Use VISA VIs to read from and write to a serial port from a LabVIEW
Real-Time application. For more information about VISA VIs, refer to the LabVIEW Help. For
information about available transceiver modes for serial communication, visit ni.com/info
and enter the Info Code serialtransceiver.

16 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Figure 14. Controller Serial Port Pin Locations
Using the USB Device Port
The USB device port is intended for use in device configuration, application deployment,
debugging, and maintenance. For example, you can install software or driver updates through
the USB device port during field maintenance instead of interrupting communication on the
RJ-45 Ethernet ports.
Caution National Instruments recommends using a locking USB cable, such as
part number 157788-01, in order to meet the shock and vibration specifications of this
product.
Using the USB Host Port
The cRIO-906xsupports common USB mass-storage devices such as USB Flash drives and
USB-to-IDE adapters formatted with FAT16 and FAT32 file systems. LabVIEW mounts USB
devices to the media/sdx1directory and the symbolic links /u, /v, /w, or /x to the media
mount point, starting with /u if it is available. You can connect multiple USB mass-storage
devices to the cRIO-906xif you use a USB hub. Refer to the LabVIEW Help for more
information about connecting USB mass-storage devices in LabVIEW.
Table 1. RS-232 Pin Descriptions
Pin Signal
1DCD
2RXD
3TXD
4DTR
5GND
6DSR
7RTS
8CTS
9RI
Pin 1
Pin 5
Pin 6
Pin 9

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |17
Note If the cRIO-906xis not in a hazardous location, you can connect and
disconnect USB devices without affecting operation.
Using the File System
The file system of the cRIO-906xfollows conventions established for UNIX-style operating
systems. Other LabVIEW Real-Time targets follow Microsoft Windows-style conventions. To
port applications from those targets, this target supports the Windows-style /C home directory.
Various LabVIEW Real-Time system files which would be accessible from C: (or /C) on other
LabVIEW Real-Time targets are found in different locations on this target.
UNIX-style file systems support the concept of a symbolic link, which allows access to a file
using an alternative file path. For example, it is possible to link /C/ni-rt/system, where
dynamic libraries are deployed on other LabVIEW Real-Time targets, to /usr/local/lib,
where they are stored on the cRIO-906x, if the application requires this. The target ships with a
link from /C/ni-rt/startup, which is the location on other LabVIEW Real-Time targets for
startup applications, to the /home/lvuser/natinst/bin, which is the default location for
startup applications on the cRIO-906x.
For more information, visit ni.com/info and enter the Info Code RT_Paths.
Using the Internal Real-Time Clock
The system clock of the cRIO-906xis synchronized with the internal high-precision real-time
clock at startup. This synchronization provides timestamp data to the controller. Refer to the
Internal Real-Time Clock specification in the Specifications section for the accuracy
specifications of the real-time clock.
Understanding LED Indications
Figure 15. cRIO-906xLEDs
POWER LED
The POWER LED lights up while the cRIO-906x is powered on. This LED indicates that the
power supply connected to the chassis is adequate.
POWER
STATUS
USER1
USER FPGA1

18 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
STATUS LED
The STATUS LED indicates several situations, as shown in Table 2.
USER1 LED
You can define the USER1 LED to meet the needs of your application. To define the LED, use
the RT LEDs VI in LabVIEW. Refer to the LabVIEW Help for more information about the
RT LEDs VI.
USER FPGA1 LED
You can use the USER FPGA1 LED to help debug your application or easily retrieve application
status. Use the LabVIEW FPGA Module and NI-RIO software to define the USER FPGA1 LED
to meet the needs of your application. Refer to the LabVIEW Help for information about
programming this LED.
Table 2. Status LED Indications
Status Indication
Off The chassis is operating normally.
Blinks twice and
pauses, every few
seconds
The 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 &
Automation Explorer (MAX) Help for information about installing
software on the chassis.
Blinks three times and
pauses, every few
seconds
The chassis is in safe mode. Refer to the Measurement &
Automation Explorer (MAX) Help for information about safe mode.
Blinks four times and
pauses, every few
seconds
The software has crashed twice without rebooting or cycling power
between crashes. This usually occurs when the chassis runs out of
memory. Review your RT VI and check the memory usage. Modify
the VI as necessary to solve the memory usage issue.
Continuously blinks The chassis has detected an unrecoverable error. Contact National
Instruments.
On for more than
five minutes
The chassis has detected an unrecoverable error. Contact National
Instruments.
On momentarily The chassis is booting. No action required.

CompactRIO cRIO-9066/cRIO-9067 Operating Instructions |© National Instruments |19
Troubleshooting Network Communication
Complete the following troubleshooting steps if the cRIO-906xcannot communicate with the
network.
1. Put the cRIO-906xin Safe Mode.
a. Hold the Reset button down until the Status LED lights up, which takes approximately
five seconds.
b. Release the Reset button. The Status LED remains on and starts blinking three times
every few seconds. The chassis is now in safe mode.
2. Establish a new DHCP connection.
a. Again, hold the Reset button down until the Status LED lights up, which takes
approximately five seconds.
b. Release the Reset button. The Status LED repeats the same behavior. The cRIO-906x
attempts to establish a new DHCP connection. If the connection fails, the cRIO-906x
assigns itself a link-local IP address. If the DHCP connection is successful and
appropriate for your application, skip to step 4.
3. Configure the IP and other network settings in MAX.
4. Press and release the Reset button to reboot the chassis.
For further troubleshooting steps, visit ni.com/info and enter the Info Code
RIOMAXTroubleshoot.

20 |ni.com |CompactRIO cRIO-9066/cRIO-9067 Operating Instructions
Where to Go Next
The ni.com/gettingstarted portal includesvideosand tutorialsto help
youbegin anew LabVIEW application. Visit ni.com/info and enter the
Info Code NewLVApp.
These help filescontain information about using NI productsin LabVIEW.
In LabVIEW, select Help»LabVIEW Help. Use the Index or Search tab of
the help and enter 9066 or 9067 to find product-specific help for the
cRIO-9066 or cRIO-9067.
Thisonline guide providesan overview of recommended architecturesand
development practices. Visit ni.com/compactriodevguide for the NI
CompactRIO DevelopersGuide.
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3
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Getting Started with NI Products
LabVIEW Help
NI CompactRIO Developers Guide
CompactRIO Sample Projects
These projectsinclude deterministic control, waveform acquisition, and
datalogging. Youcan find CompactRIO sample projectson the Create
Project dialog in LabVIEW.
These documentsexplain how to connect sensors, actuators, and other
devicesto C Seriesmodules.
C Series Module Getting Started Guides
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