National Instruments Computer Drive NI USB 6509 User Manual

USER GUIDE AND SPECIFICATIONS  
NI USB-6509  
This document contains information about using the National Instruments  
USB-6509 data acquisition (DAQ) device with NI-DAQmx 8.7 and later.  
The NI USB-6509 is a bus-powered 96-channel, digital input/output (I/O)  
device. The NI USB-6509 features 96 TTL/CMOS-compatible digital I/O  
output programmable power-up states. The NI USB-6509 also features an  
I/O Protection................................................................................... 12  
I/O State at Power-On/Power-Off/Suspend..................................... 13  
I/O Pull-Up/Pull-Down Resistor...................................................... 13  
High DIO State ......................................................................... 13  
Low DIO State.......................................................................... 14  
Increasing Current Drive on NI USB-6509 Devices ....................... 15  
 
Installing the Hardware  
The NI-DAQmx for USB Devices Getting Started Guide contains  
non-software-specific information about how to install USB devices.  
USB Cable Strain Relief  
The two strain relief options for your USB cable are as follows:  
Cable Strain Relief Groove Method—Press the USB cable into one  
of the two grooves on the underside of the NI USB-6509. Choose the  
USB cable groove that matches your USB cable size, as shown in  
Figure 1.  
Zip Tie Method—Thread a zip tie through the zip tie bar on the  
underside of the NI USB-6509 and tighten around the USB cable,  
as shown in Figure 1.  
4
3
3
2
1
5
1 USB Cable Strain Relief Groove (Large)  
2 USB Cable Strain Relief Groove (Small)  
3 USB Cable  
4 Zip Tie  
5 Zip Tie Bar  
Figure 1. USB Cable Strain Relief Options  
Mounting the NI USB-6509  
You can use the NI USB-6509 on a desktop or mount it to a standard DIN  
rail or a panel.  
Desktop Use  
You can use the NI USB-6509 on a desktop. The NI USB-6509 has grooves  
on the underside that allow it to be stacked on top of other NI USB-6509  
devices.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
         
For secure desktop use, you can adhere the supplied rubber non-skid feet to  
the underside of the device, as shown in Figure 2.  
Note Do not apply the rubber feet if you are panel mounting the NI USB-6509 or stacking  
multiple NI USB-6509 devices.  
Figure 2. Applying Rubber Feet to the NI USB-6509  
DIN Rail Mounting  
The DIN rail mounting kit (part number 779689-01, not included in your  
NI USB-6509 kit) is an accessory you can use to mount the NI USB-6509  
to a standard DIN rail.  
Note Apply strain relief, as described in the USB Cable Strain Relief section, before  
mounting the NI USB-6509 to a DIN rail.  
NI 6509 User Guide and Specifications  
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Panel Mounting  
To mount the NI USB-6509 to a board or panel, complete the following  
steps while referring to Figure 3.  
Figure 3. Mounting the NI USB-6509 on a Panel  
Notes Do not apply the rubber feet to the NI USB-6509 when panel mounting the device.  
Apply strain relief, as described in the USB Cable Strain Relief section, before panel  
mounting the NI USB-6509.  
1. Go to ni.com/infoand enter the info code rd3233to download and  
print the panel mounting template PDF.  
2. Using the template, mark the bottom point and top point on the panel.  
The points will be 162 mm (6.375 in.) from each other.  
3. Remove the USB cable from the connector on the NI USB-6509.  
4. Screw a #8 or M4 screw into the bottom point on the panel.  
5. Set the NI USB-6509 on the screw by fitting it into the bottom screw  
notch on the underside of the NI USB-6509.  
6. Screw a #8 or M4 screw through the NI USB-6509 top screw hole into  
the panel.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
   
Hardware Overview  
Figure 4 shows the key functional components of the NI USB-6509.  
+5 V  
Fuse and  
Filter  
24 mA DIO  
Tranceivers  
12 VDC Input  
External Power  
Port 0  
Port 1  
Port 2  
Port 3  
Port 4  
Port 5  
Port 6  
Port 7  
Port 8  
Port 9  
Port 10  
Port 11  
12 V to 5 V  
Regulation  
VBUS Power  
VBUS Current  
Sense  
I/O  
Protection  
96 DIO  
96 DIO  
Industrial Digital  
I/O Control FPGA  
Programmable  
Power-Up States  
USB  
Interface  
USB  
Port  
Watchdog Timer  
96 DIO  
Data/Control  
USB Data  
Digital  
Filtering  
Change  
Detection  
Figure 4. NI USB-6509 Block Diagram  
Figure 5 shows the back panel of the NI USB-6509.  
2
3
I/O LINE PULL  
4
1
HIGH  
LOW  
+
12VDC  
, 1A  
1
2
I/O Line Pull Switch  
LED  
3
4
Recessed USB Port  
DC Power Jack  
Figure 5. NI USB-6509 Back Panel  
Refer to the Safety Guidelines section of this document for important safety  
information.  
NI 6509 User Guide and Specifications  
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Programming Devices in Software  
National Instruments measurement devices for USB are packaged with  
NI-DAQ driver software, an extensive library of functions and VIs you  
can call from your application software, such as LabVIEW or  
LabWindows/CVI, to program all the features of your NI measurement  
devices. Driver software has an application programming interface (API),  
which is a library of VIs, functions, classes, attributes, and properties for  
creating applications for your device.  
NI-DAQ 8.x includes NI-DAQmx, which has its own API, hardware  
configuration, and software configuration. Refer to the NI-DAQmx for USB  
Getting Started Guide for more information.  
NI-DAQmx includes a collection of programming examples to help you get  
started developing an application. You can modify example code and save  
it in an application. You can use examples to develop a new application or  
add example code to an existing application.  
To locate LabVIEW and LabWindows/CVI examples, open the National  
Instruments Example Finder:  
In LabVIEW, select Help»Find Examples.  
In LabWindows/CVI, select Help»NI Example Finder.  
Measurement Studio, Visual Basic, and ANSI C examples are in the  
following directories:  
NI-DAQmx examples for Measurement Studio-supported languages  
are in the following directories:  
MeasurementStudio\VCNET\Examples\NIDaq  
MeasurementStudio\DotNET\Examples\NIDaq  
NI-DAQmx examples for ANSI C are in the NI-DAQ\Examples\  
DAQmx ANSI C Devdirectory  
For additional examples, refer to zone.ni.com.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
 
Related Documentation  
The following documents contain information that you may find helpful as  
you use this user guide:  
NI-DAQmx for USB Getting Started Guide—This guide describes how  
to install the NI-DAQmx software, the DAQ device, and how to  
confirm that the device is operating properly.  
NI-DAQmx Help—This help file contains information about using  
NI-DAQmx to program National Instruments devices. NI-DAQmx  
is the software you use to communicate with and control NI DAQ  
devices.  
Measurement & Automation Explorer Help for NI-DAQmx—This  
help file contains information about configuring and testing DAQ  
devices using Measurement & Automation Explorer (MAX) for  
NI-DAQmx, and information about special considerations for  
operating systems.  
DAQ Assistant Help—This help file contains information about  
creating and configuring channels, tasks, and scales using the DAQ  
Assistant.  
I/O Connector  
The 100-pin high-density SCSI connector on the NI USB-6509 provides  
access to 96 digital inputs and outputs. Use this connector to connect to  
external devices, such as solid-state relays (SSRs) and LEDs. For easy  
connection to the digital I/O connector, use the National Instruments  
SH100-100-F shielded digital I/O cable with the SCB-100 connector block,  
or use the R1005050 ribbon cable with the CB-50 or CB-50LP connector  
block.  
Caution Do not make connections to the digital I/O that exceed the maximum I/O  
specifications. Doing so may permanently damage the NI USB-6509 device and the  
computer. Refer to the Signal Descriptions and Specifications sections for information  
about maximum input ratings.  
Pin Assignments  
SH100-100-F Pin Assignments  
Figure 6 shows the pin assignments for the NI USB-6509 using the  
SH100-100-F cable. The naming convention for each pin is PX.Y, where X  
is the port (P) number, and Y is the line number or name.  
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P2.7  
P5.7  
P2.6  
P5.6  
P2.5  
P5.5  
P2.4  
P5.4  
P2.3  
P5.3  
P2.2  
P5.2  
P2.1  
P5.1  
P2.0  
P5.0  
P1.7  
P4.7  
P1.6  
P4.6  
P1.5  
P4.5  
P1.4  
P4.4  
P1.3  
P4.3  
P1.2  
P4.2  
P1.1  
P4.1  
P1.0  
P4.0  
P0.7  
P3.7  
P0.6  
P3.6  
P0.5  
P3.5  
P0.4  
P3.4  
P0.3  
P3.3  
P0.2  
P3.2  
P0.1  
P3.1  
P0.0  
P3.0  
+5 V  
GND  
1
2
3
4
5
6
7
8
9
51  
52  
53  
54  
55  
56  
57  
58  
59  
P8.7  
P11.7  
P8.6  
P11.6  
P8.5  
P11.5  
P8.4  
P11.4  
P8.3  
P11.3  
P8.2  
P11.2  
P8.1  
P11.1  
P8.0  
P11.0  
P7.7  
P10.7  
P7.6  
P10.6  
P7.5  
P10.5  
P7.4  
P10.4  
P7.3  
P10.3  
P7.2  
P10.2  
P7.1  
P10.1  
P7.0  
P10.0  
P6.7  
P9.7  
P6.6  
P9.6  
P6.5  
P9.5  
P6.4  
P9.4  
P6.3  
P9.3  
P6.2  
P9.2  
P6.1  
P9.1  
P6.0  
P9.0  
+5 V  
GND  
10 60  
11 61  
12 62  
13 63  
14 64  
15 65  
16 66  
17 67  
18 68  
19 69  
20 70  
21 71  
22 72  
23 73  
24 74  
25 75  
26 76  
27 77  
28 78  
29 79  
30 80  
31 81  
32 82  
33 83  
34 84  
35 85  
36 86  
37 87  
38 88  
39 89  
40 90  
41 91  
42 92  
43 93  
44 94  
45 95  
46 96  
47 97  
48 98  
49 99  
50 100  
Figure 6. Pin Assignments for the NI USB-6509 using the SH100-100-F  
Refer to the Signal Descriptions section for information about the signals  
available on this connector.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
 
R1005050 Pin Assignments  
Figure 6 shows the pin assignments for the NI USB-6509 using the  
R1005050 cable. The naming convention for each pin is PX.Y, where X is  
the port (P) number, and Y is the line number or name.  
Positions 1 through 50  
Positions 51 through 100  
1
3
5
7
9
2
4
1
3
5
7
9
2
4
P2.7  
P2.6  
P2.5  
P2.4  
P2.3  
P2.2  
P2.1  
P2.0  
P1.7  
P1.6  
P1.5  
P1.4  
P1.3  
P1.2  
P1.1  
P1.0  
P0.7  
P0.6  
P0.5  
P0.4  
P0.3  
P0.2  
P0.1  
P0.0  
+5 V  
P8.7  
P8.6  
P8.5  
P8.4  
P8.3  
P8.2  
P8.1  
P8.0  
P7.7  
P7.6  
P7.5  
P7.4  
P7.3  
P7.2  
P7.1  
P7.0  
P6.7  
P6.6  
P6.5  
P6.4  
P6.3  
P6.2  
P6.0  
+5 V  
P5.7  
P5.6  
P5.5  
P5.4  
P5.3  
P5.2  
P5.1  
P5.0  
P4.7  
P4.6  
P4.5  
P4.4  
P4.3  
P4.2  
P4.1  
P4.0  
P3.7  
P3.6  
P3.5  
P3.4  
P3.3  
P3.2  
P3.0  
GND  
P11.7  
P11.6  
P11.5  
P11.4  
P11.3  
P11.2  
P11.1  
P11.0  
P10.7  
P10.6  
P10.5  
P10.4  
P10.3  
P10.2  
P10.1  
P10.0  
P9.7  
6
6
8
8
10  
10  
11 12  
13 14  
15 16  
17 18  
19 20  
21 22  
23 24  
25 26  
27 28  
29 30  
31 32  
33 34  
35 36  
37 38  
39 40  
41 42  
43 44  
45 46  
47 48  
49 50  
11 12  
13 14  
15 16  
17 18  
19 20  
21 22  
23 24  
25 26  
27 28  
29 30  
31 32  
33 34  
35 36  
37 38  
39 40  
41 42  
43 44  
45 46  
47 48  
49 50  
P9.6  
P9.5  
P9.4  
P9.3  
P9.2  
P9.1  
P9.0  
GND  
Figure 7. Pin Assignments for the NI USB-6509 using the R1005050  
Refer to the Signal Descriptions section for information about the signals  
available on this connector.  
NI 6509 User Guide and Specifications  
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Signal Descriptions  
Table 1 lists the signals and descriptions for all signals available on the  
NI USB-6509 device.  
Table 1. NI USB-6509 Signal Descriptions  
Pin  
Signal Name  
Description  
MSB  
P2.7  
LSB  
P2.0  
1, 3, 5, 7, 9, 11, 13, 15  
P2.<7..0>  
Bi-directional data lines for  
port 2  
2, 4, 6, 8, 10, 12, 14, 16 P5.<7..0>  
Bi-directional data lines for  
port 5  
P5.7  
P1.7  
P4.7  
P0.7  
P3.7  
P5.0  
P1.0  
P4.0  
P0.0  
P3.0  
17, 19, 21, 23, 25, 27,  
29, 31  
P1.<7..0>  
P4.<7..0>  
P0.<7..0>  
P3.<7..0>  
+5 V supply  
GND  
Bi-directional data lines for  
port 1  
18, 20, 22, 24, 26, 28,  
30, 32  
Bi-directional data lines for  
port 4  
33, 35, 37, 39, 41, 43,  
45, 47  
Bi-directional data lines for  
port 0  
34, 36, 38, 40, 42, 44,  
46, 48  
Bi-directional data lines for  
port 3  
49, 99  
+5 Volts; provide +5 V power  
source  
50, 100  
Ground; connected to the  
computer ground signal  
51, 53, 55, 57, 59, 61,  
63, 65  
P8.<7..0>  
P11.<7..0>  
P7.<7..0>  
P10.<7..0>  
P6.<7..0>  
P9.<7..0>  
Bi-directional data lines for  
port 8  
P8.7  
P8.0  
52, 54, 56, 58, 60, 62,  
64, 66  
Bi-directional data lines for  
port 11  
P11.7  
P7.7  
P11.0  
P7.0  
67, 69, 71, 73, 75, 77,  
79, 81  
Bi-directional data lines for  
port 7  
68, 70, 72, 74, 76, 78,  
80, 82  
Bi-directional data lines for  
port 10  
P10.7  
P6.7  
P10.0  
P6.0  
83, 85, 87, 89, 91, 93,  
95, 97  
Bi-directional data lines for  
port 6  
84, 86, 88, 90, 92, 94,  
96, 98  
Bi-directional data lines for  
port 9  
P9.7  
P9.0  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
   
Digital I/O  
Static DIO on NI USB-6509 Devices  
You can use each of the NI USB-6509 DIO lines as a static digital  
input (DI) or digital output (DO) line. You can use static DIO lines to  
monitor or control digital signals. Each DIO port can be configured as a  
DI or DO port.  
All samples of static DI lines and updates of DO lines are software-timed.  
The NI USB-6509 provides 96 lines of bidirectional DIO signals,  
P<0..11>.<0..7>. You can configure the direction as input or output on a  
per-port basis. Each I/O line has a 100 kΩ I/O pull resistor. For more  
information on the I/O pull resistor, refer to the I/O Pull-Up/Pull-Down  
Resistor section.  
Figure 8 shows the circuitry of one DIO line.  
+5 V  
GND  
Transceiver  
100 kΩ  
PX.Y  
Figure 8. NI USB-6509 Digital I/O Circuitry  
The voltage input and output levels and the current drive levels of the DIO  
lines are listed in the Specifications section.  
I/O Protection  
You should avoid ESD events and overvoltage, undervoltage, and  
overcurrent fault conditions by following these guidelines.  
If you configure a DIO line as an output, do not connect it to any  
external signal source, ground signal, or power supply.  
If you configure a DIO line as an output, understand the current  
requirements of the load connected to these signals. Do not exceed the  
specified current output limits of the DAQ device. NI has several signal  
NI 6509 User Guide and Specifications  
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conditioning solutions for digital applications requiring high current  
drive.  
If you configure a DIO line as an input, do not drive the line with  
voltages outside of its normal operating range.  
Treat the DAQ device as you would treat any static sensitive device.  
Always properly ground yourself and the equipment when handling  
the DAQ device or connecting to it.  
I/O State at Power-On/Power-Off/Suspend  
After the device is powered on, the default state of all I/O lines is input.  
Using the I/O line pull switch located on the back panel, you can select to  
pull all I/O lines high or low. The pull-up or pull-down resistor provides a  
weak pull-high or pull-low logic level, respectively, on every I/O line. The  
selected I/O line pull setting takes effect regardless of the I/O direction. For  
more information about this feature, refer to the I/O Pull-Up/Pull-Down  
You can also configure the power-up state in software using the  
programmable power-up state feature. Each individual I/O line can be  
independently configured for high-impedance input, high output, or low  
output after power-up. For more information, refer to the Programmable  
Power-Up States section.  
When the device is powered off or in suspend state, all I/O lines are  
powered off.  
I/O Pull-Up/Pull-Down Resistor  
The NI USB-6509 facilitates user-configurable pull-up or pull-down tasks.  
Each DIO channel is connected to a 100 kΩ resistor and can be pulled high  
or low using the back-panel switch, shown in Figure 5. Using this switch  
pulls all 96 DIO lines high when set to HIGH or low when set to LOW.  
However, if all lines are high, you might want to pull some lines low. To  
do this properly, you must understand the nature of the drive current on  
those lines and adhere to TTL-logic levels.  
High DIO State  
If you select the pulled-high mode, each DIO line is pulled to Vcc (+5 V)  
with a 100 kΩ resistor. To pull a specific line low, connect a pull-down  
resistor (RL) whose value gives you a maximum of 0.8 V between the line  
and ground. Use the largest possible resistor so that you do not use more  
current than necessary to perform the pull-down task. Also, make sure the  
resistor value is not so large that leakage current from the DIO line drives  
the voltage at the resistor above a TTL low level of 0.8 V.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
     
NI USB-6509  
+5 V  
Transceiver  
100 kΩ  
Digital I/O Line  
RL  
GND  
Figure 9. DIO Channel Configured for High DIO State with External Load  
Example:  
At power up, the device is configured for input and, by default, all DIO  
lines are high. To pull one channel low, complete the following steps:  
1. Install a load (RL). Remember that the smaller the resistance, the  
greater the current consumption and the lower the voltage (V).  
2. Using the following formula, calculate the largest possible load to  
maintain a logic low level of 0.8 V and supply the maximum driving  
current (I).  
V = I * RL RL = V / I  
where:  
V= 0.8 V is the voltage across RL  
I = 91 μA is the maximum leakage current from the device at low  
input  
therefore:  
RL = 8.8 kΩ is the 0.8 V / 91 μA  
This resistor value, 8.8 kΩ, provides a maximum of 0.8 V on the DIO line.  
You can substitute smaller resistor values, but they draw more current,  
leaving less drive current for other circuitry connected to this line.  
Low DIO State  
If you select pulled-low mode, each DIO line is pulled to GND (0 V) using  
a 100 kΩ resistor. If you want to pull a specific line high, connect a pull-up  
resistor that gives you a minimum of 2 V. Use the largest possible  
resistance value so that you do not use more current than necessary to  
perform the pull-up task.  
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Also, make sure the pull-up resistor value is not so large that leakage  
current from the DIO line brings the voltage at the resistor below a  
TTL-high level of 2 V.  
NI USB-6509  
+5 V  
Transceiver  
RL  
Digital I/O Line  
100 kΩ  
GND  
Figure 10. DIO Channel Configured for Low DIO State with External Load  
Example:  
The switch is set in the low DIO state, which means all DIO lines are pulled  
low. If you want to pull one channel high, complete the following steps:  
1. Install a load (RL). Remember that the smaller the resistance, the  
greater the current consumption and the lower the voltage (V).  
2. Using the following formula, calculate the largest possible load to  
maintain a logic high level of 2 V and supply the maximum sink  
current (I).  
V = I * RL RL = V / I  
where:  
V = 5 V – 2 V = 3 V is the voltage across RL  
I = 91 μA is the maximum leakage current to the device at high  
input  
therefore:  
RL = 33 kΩ is the 3 V / 91 μA  
This resistor value, 33 kΩ, provides a minimum of 2 V on the DIO line. You  
can substitute smaller resistor values, but they draw more current, leaving  
less sink current for other circuitry connected to this line.  
Increasing Current Drive on NI USB-6509 Devices  
Based on the USB specification, the maximum current that a bus-powered  
USB device can draw is limited to 500 mA. Consequently, when the  
NI USB-6509 is powered only from a USB port, the current drive capacity  
at output channels is limited.  
© National Instruments Corporation  
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NI 6509 User Guide and Specifications  
 
 
The NI USB-6509 has a current-sense circuit on VBUS (USB power rail).  
If the output channels source more than the specified current, the current is  
limited. The two following occurrences indicate an overcurrent condition:  
The inputs/outputs are disabled  
The LED on the back panel is blinking  
If you want to increase the current drive capacity on the NI USB-6509, you  
can use an optional external +12 VDC power supply. For more information,  
refer to the Optional +12 VDC Power Supply Installation section.  
DIO Signal Connection  
Figure 11 shows an example of signal connections for three typical digital  
I/O applications. Port 0 is configured for digital output, and port 7 is  
configured for digital input. Digital input applications include receiving  
TTL signals and sensing external device states such as the state of the  
switch in the figure. Digital output applications include sending TTL  
signals and driving external devices such as the LED shown in Figure 11.  
+5 V  
LED  
41  
43  
45  
47  
67  
69  
71  
73  
Port 0  
P0.<3..0>  
Port 7  
TTL Signal  
P7.<7..4>  
+5 V  
50, 100  
GND  
NI USB-6509  
Figure 11. NI USB-6509 Signal Connections  
NI 6509 User Guide and Specifications  
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Protecting Inductive Loads  
When inductive loads are connected to outputs, a large  
counter-electromotive force may occur at switching time because of the  
energy stored in the inductive load. These flyback voltages can damage the  
outputs and/or the power supply.  
To limit these flyback voltages at the inductive load, install a flyback diode  
across the inductive load. For best results, mount the flyback diode within  
18 inches of the load. Figure 12 shows an example of using an external  
flyback diode to protect inductive loads.  
PX.Y  
Load  
GND  
NI USB-6509  
Flyback Diode for  
Inductive Loads  
Figure 12. Limiting Flyback Voltages at the Inductive Load  
Sinking and Sourcing Examples  
The following sections provide examples of driving a relay less than  
24 mA, driving a relay greater than 24 mA, and driving solid-state relays.  
Driving a Relay <24 mA  
Figures 13 and 14 show examples of connecting the NI USB-6509 to a  
relay that does not require more than 24 mA of current.  
Vcc  
PX.Y  
GND  
NI USB-6509  
Figure 13. NI USB-6509 Sinking Connection Example, <24 mA  
© National Instruments Corporation  
17  
NI 6509 User Guide and Specifications  
 
         
PX.Y  
GND  
NI USB-6509  
Figure 14. NI USB-6509 Sourcing Connection Example, <24 mA  
Driving a Relay >24 mA  
Figures 15 and 16 are examples of connecting the NI USB-6509 to a relay  
that requires more than 24 mA of current. These examples use an additional  
transistor circuit.  
Vcc  
PX.Y  
GND  
NI USB-6509  
Figure 15. NI USB-6509 Sinking Connection Example, >24 mA  
Vcc  
PX.Y  
GND  
NI USB-6509  
Figure 16. NI USB-6509 Sourcing Connection Example, >24 mA  
NI 6509 User Guide and Specifications  
18  
ni.com  
 
       
Driving SSRs  
Figure 17 shows an example of connecting the NI USB-6509 to a  
solid-state relay (SSR).  
Load  
PX.Y  
+
_
or  
SSR  
DC  
AC  
GND  
NI USB-6509  
Figure 17. NI USB-6509 SSR Connection Example  
LED Indicator  
The LED indicator, located on the device back panel, indicates device  
status. Table 2 shows the behavior of the LED.  
Table 2. PWR/ACT LED Status  
LED State  
Device Status  
Device not powered or in suspend state  
Operating normally  
Not lit  
On, not blinking  
Blinking  
Device error—USB power budget possibly exceeded  
Power Connection  
Optional +12 VDC Power Supply Installation  
To install a +12 VDC power supply into the NI USB-6509, complete the  
following steps:  
1. Ensure that the device is powered off by unplugging the USB cable  
from the device.  
2. After the device is powered off and unplugged, remove the plastic cap  
on the DC jack, located on the device back panel.  
3. Plug the +12 VDC power supply into the DC jack.  
Caution Do not remove external +12 VDC power supply when the device is powered on.  
Doing so may reboot the NI USB-6509 and cause device damage.  
© National Instruments Corporation  
19  
NI 6509 User Guide and Specifications  
 
           
+5 V Power Available at I/O Connector  
Pins 49 and 99 supply +5 V power to the I/O connector. The power drawn  
from these two pins shares the power consumption with the transceivers.  
The I/O connector power has a fuse for overcurrent protection. This fuse is  
not customer replaceable. If the fuse is blown, return the device to NI for  
repair.  
Caution The power pins, +5V and GND, connect to the computer power supply and are  
not isolated. Do not connect a +5V power pin directly to GND or connect a +5V or GND  
pin to any other voltage source. Doing so may cause injury or permanently damage the  
NI USB-6509 components. National Instruments is not liable for any damage or injury  
resulting from such a connection.  
For more information on maximum power ratings and overcurrent limits,  
refer to the Specifications section.  
Industrial DIO Features  
The NI USB-6509 features digital filtering, programmable power-up  
states, change detection, and a watchdog timer.  
Digital Filtering  
Use the digital filter option available on the NI USB-6509 input lines to  
eliminate glitches on input data. When used with change detection, filtering  
can also reduce the number of changes to examine and process.  
You can configure the digital input channels to pass through a digital filter,  
and you can control the timing interval the filter uses. The filter blocks  
pulses that are shorter than half of the specified timing interval and passes  
pulses that are longer than the specified interval. Intermediate-length  
pulses—pulses longer than half of the interval but less than the  
interval—may or may not pass the filter.  
Table 3 lists the pulse widths guaranteed to be passed and blocked.  
Table 3. NI USB-6509 Digital Filtering  
Pulse Width Passed  
Pulse Width Blocked  
Filter Interval  
Low Pulse  
tinterval  
High Pulse  
Low Pulse  
tinterval/2  
High Pulse  
tinterval  
tinterval  
tinterval/2  
You can enable filtering on as many input lines as is necessary for your  
application. All filtered lines share the same timing interval, which ranges  
from 200 ns to 200 ms.  
NI 6509 User Guide and Specifications  
20  
ni.com  
 
       
Internally, the filter uses two clocks: the sample clock and the filter clock.  
The sample clock has a frequency of 48 MHz that corresponds to a period  
of 20.83 ns. The filter clock is generated by a counter and has a period equal  
to one half of the specified timing interval. The input signal is sampled on  
each rising edge of the sample clock. However, a change in the input signal  
is recognized only if it maintains its new state for at least two consecutive  
rising edges of the filter clock.  
The filter clock is programmable and allows you to control how long a  
pulse must last to be recognized. The sample clock provides a fast sample  
rate to ensure that input pulses remain constant between filter clocks.  
Digital Filtering Example  
Figure 18 shows a filter configuration with an 208 ns filter interval  
(104 ns filter clock).  
External  
Signal  
Filter  
Clock  
Sample Clock (20.83 ns)  
H
H
L
L
L
H
H
H
External  
Signal  
Sampled  
B
H
L
L
L
H
H
H
H
H
H
C
A
Filtered  
Signal  
Figure 18. Digital Filtering Example  
In periods A and B, the filter blocks the glitches because the external signal  
does not remain steadily high from one rising edge of the filter clock to the  
next. In period C, the filter passes the transition because the external signal  
remains steadily high. Depending on when the transition occurs, the filter  
may require up to two filter clocks—one full filter interval—to pass a  
transition. Figure 18 shows a rising (0 to 1) transition. The same filtering  
applies to falling (1 to 0) transitions.  
© National Instruments Corporation  
21  
NI 6509 User Guide and Specifications  
 
   
Programmable Power-Up States  
At power-up, the output drives on the NI USB-6509 are disabled. All lines  
are user-configurable for high-impedance input, high output, or low output.  
User-configurable power-up states are useful for ensuring that the  
NI USB-6509 powers up in a known state.  
To use MAX (recommended) to program the power-up states, select  
the device and click the Properties button. Refer to the software  
documentation for information about how to program the power-up states  
using NI-DAQ with LabVIEW or other National Instruments application  
development environments (ADEs).  
Note Using the programmable power-up states feature overrides the state configured  
using the I/O pull-up/pull-down switch.  
Change Detection  
You can program the NI USB-6509 to send an interrupt when a change  
occurs on any input line.  
The NI USB-6509 can monitor changes on selected input lines or on all  
input lines. It can monitor for rising edges (0 to 1), falling edges (1 to 0),  
or both. When an input change occurs, the NI USB-6509 generates an  
interrupt, and the NI-DAQ driver then notifies the software.  
Note Excessive change detections can affect system performance. Use digital filtering to  
minimize the effects of noisy input lines.  
The NI USB-6509 sends a change detection when any one of the changes  
occurs, but it does not report which line changed or if the line was rising or  
falling. After a change, you can read the input lines to determine the current  
line states. The maximum rate of change detection is determined by the  
software response time, which varies from system to system.  
An overflow bit indicates that an additional rising or falling edge has been  
detected before the software could process the previous change.  
Refer to the software documentation for information about how to set up  
and implement the change detection.  
NI 6509 User Guide and Specifications  
22  
ni.com  
 
   
Change Detection Example  
Table 4 shows a change detection example for six bits of one port.  
Table 4. Change Detection Example  
Bit  
7
6
5
4
3
2
1
0
Changes to detect  
Enable rising-edge  
detection  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
no  
no  
no  
no  
yes  
no  
no  
yes  
Enable falling-edge  
detection  
This example assumes the following line connections:  
Bits 7, 6, 5, and 4 are connected to data lines from a four-bit TTL  
output device. The NI USB-6509 detects any change in the input data  
so you can read the new data value.  
Bit 1 is connected to a limit sensor. The NI USB-6509 detects rising  
edges on the sensor, which correspond to over-limit conditions.  
Bit 0 is connected to a switch. The software can react to any switch  
closure, which is represented by a falling edge. If the switch closure is  
noisy, enable digital filtering for this line.  
In this example, the NI USB-6509 reports rising edges only on bit 1, falling  
edges only on bit 0, and rising and falling edges on bits 7, 6, 5, and 4.  
The NI USB-6509 reports no changes for bits 3 and 2. After receiving  
notification of a change, you can read the port to determine the current  
values of all eight lines. You cannot read the state of any lines that are  
configured for change detection until the change detection interrupt occurs.  
Watchdog Timer  
The watchdog timer is a software configurable feature used to set critical  
outputs to safe states in the event of a software failure, a system crash, or  
any other loss of communication between the application and the  
NI USB-6509.  
When the watchdog timer is enabled, if the NI USB-6509 does not receive  
a watchdog reset software command within the time specified for the  
watchdog timer, the outputs go to a user-defined safe state and remain in  
that state until the watchdog timer is disarmed by the application and new  
values are written, the NI USB-6509 is reset, or the computer is restarted.  
© National Instruments Corporation  
23  
NI 6509 User Guide and Specifications  
 
     
The expiration signal that indicates an expired watchdog continues to assert  
until the watchdog is disarmed. After the watchdog timer expires, the  
NI USB-6509 ignores any writes until the watchdog timer is disarmed.  
Note When the watchdog timer is enabled and the computer enters a fault condition, ports  
that are set to tri-state remain tri-stated and do not go to user-defined safe states.  
You can set the watchdog timer timeout period to specify the amount of  
time that must elapse before the watchdog timer expires. The counter on the  
watchdog timer is configurable up to (232 – 1) × 20.83 ns (approximately  
1.5 minutes) before it expires.  
Cables and Accessories  
Table 5 lists the products available for use with the NI USB-6509.  
Table 5. NI USB-6509 Connectivity Options  
Cable  
Accessory  
SH100-100-F shielded cable—part number 185095-01 (1 m)  
or 185095-02 (2 m)  
SCB-100 connector block—part number 776990-01  
R1005050 ribbon cable—part number 182762-0R5 (0.5 m),  
182762-01 (1 m), or 182762-02 (2 m)  
CB-50 connector block, DIN-rail  
mount—part number 776164-90  
CB-50LP connector block, panel  
mount—part number 777101-01  
CB-100 I/O kit (cable included in kit)  
(unshielded)—part number 777812-01  
+12 VDC power supply—part number 780308-0x (where  
the x indicates different regions or cable options)  
For more information about optional equipment available from National  
Instruments, visit ni.com.  
Specifications  
This section lists the specifications of the NI USB-6509 devices. These  
specifications are typical at 25 °C, unless otherwise stated.  
Number of channels................................96 input/output  
Compatibility..........................................TTL/CMOS, single-ended  
GND referenced  
NI 6509 User Guide and Specifications  
24  
ni.com  
 
     
Power-on state........................................ Configured as inputs,  
pull-up/pull-down (selectable on  
the back panel switch)  
Pull-up/pull-down resistor...................... 100 kΩ 5%  
Data transfers ......................................... Programmed I/O  
Digital Input Characteristics  
Level  
Min  
Max  
Input voltage  
0 V  
5.0 V  
Input low voltage  
2.0 V  
0.8 V  
Input high voltage  
Input low current (Vin = 0 V)  
Input high current (Vin= 5 V)  
–91.0 μA  
91.0 μA  
Digital Output Characteristics  
Level  
Min  
Typ  
Max  
Low-level output current (IOL  
)
24 mA  
–24 mA  
High-level output current (IOH  
)
Output low voltage (VOL), at 100 μA  
0.0 V  
0.1 V  
0.5 V  
1.0 V  
0.2 V  
at 2 mA  
at 12 mA  
at 24 mA  
1.4 V  
Output high voltage (VOH), at –100 μA  
4.3 V  
5.0 V  
4.9 V  
4.5 V  
4.0 V  
at –2 mA  
at –12 mA  
at –24 mA  
2.8 V  
© National Instruments Corporation  
25  
NI 6509 User Guide and Specifications  
 
The total current sinking/sourcing from one port cannot exceed 100 mA.  
Total current sourced by all DO lines simultaneously should not exceed  
215 mA for bus-powered configuration. If more sourcing current is  
required, use an optional external power supply  
+5V power available at  
I/O connector (pins 49 and 99)...............+4.1 to +5.2 V;  
215 mA, maximum  
(Bus-powered);  
0.5 A, maximum (with  
external power supply)  
Note The I/O connector power has a fuse for overcurrent protection. This fuse is not  
customer replaceable. If the fuse is blown, return the device to NI for repair.  
Bus Interface  
USB ........................................................USB 2.0 Hi-Speed or full-speed1  
Power Requirement  
USB  
Input voltage....................................4.5 to 5.25 V in configured state  
No load current................................150 mA, max  
Maximum load current ....................500 mA, max  
Suspend current ...............................250 μA, typical  
(no external supply)  
External DC supply  
Input voltage range..........................+12 V 20%  
Maximum input current...................1 A  
Power input connector.....................DC input jack with threaded  
locking ring, 0.08 in. (2 mm)  
center pin  
Power input mating connector.........Switchcraft S760K  
Physical  
Dimensions .............................................17.78 × 10.30 × 3.34 cm  
(7.0 × 4.1 × 1.3 in.)  
I/O connector ..........................................100-pin female 0.050 series SCSI  
Weight ....................................................Approx. 239 g (8.4 oz)  
1
If you are using the NI USB-6509 in full-speed mode, device performance is lower.  
NI 6509 User Guide and Specifications  
26  
ni.com  
 
Safety  
This product is designed to meet the requirements of the following  
standards of safety for electrical equipment for measurement, control,  
and laboratory use:  
IEC 61010-1, EN 61010-1  
UL 61010-1, CSA 61010-1  
Note For UL and other safety certifications, refer to the product label or visit ni.com/  
certification, search by model number or product line, and click the appropriate link  
in the Certification column.  
Hazardous Locations  
The NI USB-6509 is not certified for use in hazardous locations.  
Environmental  
The NI USB-6509 device is intended for indoor use only.  
Operating temperature  
(IEC 60068-2-1 and IEC 60068-2-2)..... 0 to 55 °C  
Operating humidity  
(IEC 60068-2-56)................................... 10 to 90% RH, noncondensing  
Maximum altitude.................................. 2,000 m (at 25 °C ambient  
temperature)  
Storage temperature  
(IEC 60068-2-1 and IEC 60068-2-2)..... –40 to 85 °C  
Storage humidity  
(IEC 60068-2-56)................................... 5 to 90% RH, noncondensing  
Pollution Degree (IEC 60664) ............... 2  
Electromagnetic Compatibility  
This product is designed to meet the requirements of the following  
standards of EMC for electrical equipment for measurement, control,  
and laboratory use:  
EN 61326 EMC requirements; Minimum Immunity  
EN 55011 Emissions; Group 1, Class A  
CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A  
Note For EMC compliance, operate this device according to product documentation.  
© National Instruments Corporation  
27  
NI 6509 User Guide and Specifications  
 
CE Compliance  
This product meets the essential requirements of applicable European  
Directives, as amended for CE marking, as follows:  
2006/95/EC; Low-Voltage Directive (safety)  
2004/108/EC; Electromagnetic Compatibility Directive (EMC)  
Note Refer to the Declaration of Conformity (DoC) for this product for any additional  
regulatory compliance information. To obtain the DoC for this product, visit ni.com/  
certification, search by model number or product line, and click the appropriate link  
in the Certification column.  
Environmental Management  
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 not only to the  
environment but also to NI customers.  
For additional environmental information, refer to the NI and the  
Environment 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.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling  
center. For more information about WEEE recycling centers and National Instruments  
WEEE initiatives, visit ni.com/environment/weee.htm.  
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(RoHS)  
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RoHS  
ni.com/environment/rohs_china  
(For information about China RoHS compliance, go to  
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NI 6509 User Guide and Specifications  
28  
ni.com  
 
Safety Guidelines  
Caution Operate the hardware only as described in these operating instructions.  
The following section contains important safety information that you must  
follow when installing and using the NI USB-6509.  
Do not operate the NI USB-6509 in a manner not specified in this  
document. Misuse of the device can result in a hazard. You can compromise  
the safety protection built into the device if the device is damaged in any  
way. If the device is damaged, contact National Instruments for repair.  
Do not substitute parts or modify the device except as described in this  
document. Use the device only with the chassis, modules, accessories, and  
cables specified in the installation instructions. You must have all covers  
and filler panels installed during operation of the device.  
Do not operate the device in an explosive atmosphere or where there may  
be flammable gases or fumes. If you must operate the device in such an  
environment, it must be in a suitably rated enclosure.  
If you need to clean the device, use a dry cloth. Make sure that the device  
is completely dry and free from contaminants before returning it to service.  
Operate the device only at or below Pollution Degree 2. Pollution is foreign  
matter in a solid, liquid, or gaseous state that can reduce dielectric strength  
or surface resistivity. The following is a description of pollution degrees:  
Pollution Degree 1 means no pollution or only dry, nonconductive  
pollution occurs. The pollution has no influence.  
Pollution Degree 2 means that only nonconductive pollution occurs in  
most cases. Occasionally, however, a temporary conductivity caused  
by condensation must be expected.  
Pollution Degree 3 means that conductive pollution occurs, or dry,  
nonconductive pollution occurs that becomes conductive due to  
condensation.  
You must insulate signal connections for the maximum voltage for which  
the device is rated. Do not exceed the maximum ratings for the device. Do  
not install wiring while the device is live with electrical signals. Do not  
remove or add connector blocks when power is connected to the system.  
Avoid contact between your body and the connector block signal when hot  
swapping modules. Remove power from signal lines before connecting  
them to or disconnecting them from the device.  
© National Instruments Corporation  
29  
NI 6509 User Guide and Specifications  
 
 
Operate the device at or below the Measurement Category I1. Measurement  
circuits are subjected to working voltages2 and transient stresses  
(overvoltage) from the circuit to which they are connected during  
measurement or test. Measurement categories establish standard impulse  
withstand voltage levels that commonly occur in electrical distribution  
systems. The following is a description of measurement categories:  
Measurement Category I is for measurements performed on circuits  
not directly connected to the electrical distribution system referred to  
as MAINS3 voltage. 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 low-voltage sources,  
and electronics.  
Measurement Category II is for measurements performed on circuits  
directly connected to the electrical distribution system. This category  
refers to local-level electrical distribution, such as that provided by a  
standard wall outlet (for example, 115 V for U.S. or 230 V for Europe).  
Examples of Measurement Category II are measurements performed  
on household appliances, portable tools, and similar E Series devices.  
Measurement Category III is for measurements performed in the  
building installation at the distribution level. This category refers to  
measurements on hard-wired equipment such as equipment in fixed  
installations, distribution boards, and circuit breakers. Other examples  
are wiring, including cables, bus-bars, junction boxes, switches,  
socket-outlets in the fixed installation, and stationary motors with  
permanent connections to fixed installations.  
Measurement Category IV is for measurements performed at the primary  
electrical supply installation (<1,000 V). Examples include electricity  
meters and measurements on primary overcurrent protection devices and  
on ripple control units.  
1
Measurement Category as defined in electrical safety standard IEC 61010-1. Measurement Category is also referred to as  
Installation Category.  
2
3
Working Voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.  
MAINS is defined as a hazardous live electrical supply system that powers equipment. Suitably rated measuring circuits may  
be connected to the MAINS for measuring purposes.  
NI 6509 User Guide and Specifications  
30  
ni.com  
 
Where to Go for Support  
The National Instruments Web site is your complete resource for technical  
support. At ni.com/supportyou have access to everything from  
troubleshooting and application development self-help resources to email  
and phone assistance from NI Application Engineers.  
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  
electronic 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.  
National Instruments corporate headquarters is located at  
11500 North Mopac Expressway, Austin, Texas, 78759-3504.  
National Instruments also has offices located around the world to help  
address your support needs. For telephone support in the United States,  
create your service request at ni.com/supportand follow the calling  
instructions or dial 512 795 8248. For telephone support outside the United  
States, contact your local branch office:  
Australia 1800 300 800, Austria 43 662 457990-0,  
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,  
Canada 800 433 3488, China 86 21 5050 9800,  
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,  
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,  
Germany 49 89 7413130, India 91 80 41190000, Israel 972 3 6393737,  
Italy 39 02 41309277, Japan 0120-527196, Korea 82 02 3451 3400,  
Lebanon 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 7 495 783 6851,  
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,  
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,  
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,  
Taiwan 886 02 2377 2222, Thailand 662 278 6777,  
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545  
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation.  
Refer to the Terms of Use section on ni.com/legalfor more information about National  
Instruments trademarks. Other product and company names mentioned herein are trademarks or trade  
names of their respective companies. For patents covering National Instruments products, refer to the  
appropriate location: Help»Patents in your software, the patents.txtfile on your CD, or  
ni.com/patents.  
© 2008 National Instruments Corporation. All rights reserved.  
372136A-01  
Mar08  
 
 

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