NI NIUSB-8476 1-port interfaces for high-speed can,low-speed/fault-tolerant can, and lin Datasheet

CAN and LIN Interfaces for Hi-Speed USB
NI USB-8472, NI USB-8472s, NI USB-8473,
NI USB-8473s, NI USB-8476, NI USB-8476s,
• 1-port interfaces for high-speed CAN,
low-speed/fault-tolerant CAN, and LIN
• Optional hardware synchronization
• Hi-Speed USB, bus-powered
• 500 V digital isolation
• Bus error logging
• Hardware timestamping – 1 µs resolution
CAN Interfaces
• Philips SJA1000 CAN controller
• Transmit/receive 100 percent bus load
at 1 Mb/s
• ISO 11898 compliance for standard (11bit) and extended (29-bit) arbitration IDs
• Software-selectable termination for
low-speed/fault-tolerant CAN
• J1939 compliance
Operating Systems
• Windows Vista/XP/2000
Recommended Software
•
•
•
•
•
LabVIEW
LabWindows™/CVI
Visual C++ 6.0
Visual Basic 6.0
Borland C/C++
Application Software
(included)
• CAN/LIN bus monitoring
and logging utility
Driver Software
(included)
• NI-CAN
LIN Interfaces
• Atmel ATA6620 transceiver
• LIN 1.3/2.0 and J2602 compliance
• Software-selectable master/
slave termination
Model
USB-8472
USB-8472s
USB-8473
USB-8473s
USB-8476
USB-8476s
Physical Layer
Low-speed/fault-tolerant CAN
Low-speed/fault-tolerant CAN
High-speed CAN
High-speed CAN
LIN
LIN
Transceivers
TJA1054AT
TJA1054AT
TJA1041
TJA1041
ATA6620
ATA6620
Ports
1
1
1
1
1
1
Max Transfer
Rate (kb/s)
125
125
1,000
1,000
20
20
Hardware
Sync
–
3
–
3
–
3
Software
Termination
3
3
–
–
3
3
API
Frame
Frame
Frame
Frame
Frame
Frame
Table 1. NI USB-847x Selection Guide
Overview
NI USB-847x devices provide Hi-Speed USB interfaces for Controller Area
Network (CAN) and Local Interconnect Network (LIN) monitoring, logging,
and testing. With high-speed CAN, low-speed/fault-tolerant CAN, and
LIN interfaces featuring optional hardware synchronization, you can use
two or more USB-847x devices together to interface to a wide variety of
CAN and LIN networks.
The USB-847x interfaces are ideal for many types of
applications, including:
• In-vehicle network monitoring and logging
• Bus load monitoring
• Device validation with synchronized data acquisition
• CAN device development and test
• CAN and LIN data correlation with external measurements
The convenient all-in-one design features a captive 2 m USB cable
and built-in transceiver, requiring no extra cables or accessories to
get applications running quickly.
With hardware timestamping, you can log messages with
microsecond-accurate timestamps for reconstructing network events
and correlating data across synchronized devices. All USB-847x
interfaces use an industry-standard 9-pin male D-Sub (DB9) connector
to interface to CAN and LIN buses.
Hi-Speed USB connectivity and onboard frame buffering ensure
no dropped frames, even under 100 percent bus loads.
CAN Interfaces
USB-847x CAN interfaces feature the industry-standard Philips SJA1000
CAN controller, which implements ISO 11898 CAN functionality. The
SJA1000 offers additional features to aid in system development,
including listen-only mode, sleep/wakeup mode, error counter access,
and self-reception (echo) mode. USB-847x CAN interfaces recognize
standard (11-bit) and extended (29-bit) arbitration IDs and are compatible
with J1939 networks.
CAN and LIN Interfaces for Hi-Speed USB
features baud rates up to 20 kb/s and offers advanced power
management with a low-power sleep mode.
1
2
3
4
No Connection
5
Shield
9
V+
V–
8
No Connection
CAN_L
7
CAN_H
No Connection
6
Optional Ground (V –)
Figure 1. CAN DB9 Connector (USB CAN Modules)
1
2
3
4
No Connection
5
Shield
9
VBat
Ground
8
No Connection
No Connection
Many automotive applications demand tight integration of CAN, LIN,
analog, and digital measurements. In applications such as CAN device
development and validation, you need to synchronize different measurements
to correlate data. You can program this synchronization in software, but
OS latency and clock drift between the different onboard oscillators
introduce unacceptable delays for certain automotive test applications.
NI offers USB-847x CAN and LIN interfaces with an optional hardware
synchronization feature, with which the USB interfaces can share timing
and triggering signals with other USB-847x interfaces, as well as data
acquisition, vision, and motion devices, to achieve true hardware
synchronization. Determinism is maintained between the trigger signal
and the desired response because timing and triggering signals are
handled in hardware. The host PC software interacts only to retrieve the
data once it is acquired or to write new data.
7
LIN
No Connection
6
Ground
Hardware Synchronization
Figure 2. LIN DB9 Connector (USB LIN Modules)
Low-speed/fault-tolerant USB-847x CAN interfaces offer softwareselectable termination for compatibility with all low-speed
network configurations.
Onboard Physical Layer
The CAN physical layer connects the CAN controller to the physical
bus wires. USB-847x CAN interfaces are available with high-speed and
low-speed/fault-tolerant physical layers. All USB-847x devices have
onboard physical layer transceivers and require no external dongles.
The physical layers are internally powered via a DC-to-DC converter
and electrically isolated up to 500 V.
LIN Interfaces
NI USB-8476 LIN interfaces, featuring the Atmel ATA6620 LIN
transceiver, are compliant with the LIN 1.3/2.0 and J2602 specifications
and offer software-selectable master/slave termination. The ATA6620
NI-CAN Software
National Instruments provides NI-CAN driver software for Windows
Vista/XP/2000. NI-CAN includes a detailed API and examples for
NI LabVIEW and LabWindows/CVI, Microsoft Visual C/C++ 6.0 and
Visual Basic 6.0, and Borland C/C++. USB-847x interfaces use the NI-CAN
Frame API for frame-level access to messages on CAN and LIN networks.
The NI-CAN driver software also includes the Bus Monitor and NI Spy
utilities to aid in application development.
NI-CAN Frame API
The NI-CAN Frame API offers a powerful interface for accessing NI CAN
hardware. The API enables full access to all traffic on CAN and LIN buses.
It is a powerful tool for implementing a variety of applications, including
CAN and LIN frame-level access, challenge response protocols, remote
frame handling, and advanced synchronization.
Bus Monitor
To quickly monitor all CAN and LIN bus traffic, use Bus Monitor, a
utility that offers an easy-to-use interface that displays all CAN and
LIN frames on the network, and log the traffic to disk. Bus Monitor
provides options to control, display, and view bus statistics.
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
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CAN and LIN Interfaces for Hi-Speed USB
NI Spy
NI Spy is a utility for monitoring NI-CAN API calls made by applications
without recompiling or rebuilding. It is ideal for testing application
functionality, troubleshooting problems, and verifying communication
with CAN devices. NI Spy dynamically captures and displays all NI-CAN
API calls made by applications running on the computer.
Specifications
USB Power Requirements
USB-8472(s), USB-8473(s) .................. 250 mA, 5 VDC
USB-8476(s)......................................... 200 mA, 5 VDC
Hardware Synchronization
Input clocks ......................................... 1, 10, and 20 MHz
Output clock ........................................ 1 MHz
Trigger lines......................................... 1 input/output
Clock lines........................................... 1 input/output
Examples included for sync to NI-DAQmx, LIN, CAN, and RTSI bus.
Supported Baud Rates
USB-8472(s)......................................... 5,000 to 125,000 baud
USB-8473(s)......................................... 40,000 to 1,000,000 baud
USB-8476(s)......................................... 2,400 to 20,000 baud
Safety
Figure 3. COMBICON Synchronization Connector for USB-847x Devices
Galvanic CAN channel to
USB isolation .................................. 500 V
Withstand............................................ 2 s maximum
Ordering Information
Dimensions
NI USB-8472
1-port, low-speed, USB CAN interface ................................779790-01
Nonsynchronized versions .................. 7.87 by 6.35 by 2.54 cm
(3.1 by 2.5 by 1.0 in.)
Synchronized versions ........................ 7.87 by 7.11 by 2.54 cm
(3.1 by 2.8 by 1.0 in.)
Cable length........................................ 2 m
I/O connector ...................................... 9-pin male D-Sub, optional 3-pin
COMBICON for synchronization
NI USB-8472s
1-port, low-speed, USB CAN interface
with synchronization ............................................................779791-01
NI USB-8473
1-port, high-speed, USB CAN interface................................779792-01
NI USB-8473s
1-port, high-speed, USB CAN interface
with synchronization ............................................................779793-01
NI USB-8476
1-port, USB LIN interface ......................................................779794-01
Operating Environment
Ambient temperature.......................... 0 to 55 °C
Relative humidity ................................ 10 to 90%, noncondensing
(tested in accordance with
IEC-60068-2-1, IEC-60068-2-2,
IEC-60068-2-56)
NI USB-8476s
1-port, USB LIN interface with synchronization ..................779795-01
CAN Device Simulator
U.S. 120 VAC ........................................................................779189-01
Euro 240 VAC ........................................................................779189-02
Japan 100 VAC ......................................................................779189-07
Cables and Brackets
USB cable strain relief bracket ............................................777550-01
CAN single-termination, high-speed cable, 2 m ..................192017-02
BUY NOW!
For complete product specifications, pricing, and accessory
information, call 800 813 3693 (U.S.) or go to ni.com/can.
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
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2008-9328-151-101-D
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