Nmea 2000 over pxi - can bus (NI PXI-8460/2)

Hi,
I gonna purchase an Automatic Test Equipment (ATE) based on NI PXI.
(LabWindows/CVI, Win7)
One of the features of my ATE is to test a NMEA2000 network (read and write masseges).
Can I use the NI PXI-8460/2 module to test the NMEA2000 network?
If yes, what else do I need except of that module (software, hardware)
If not, what can I use instead of a CAN-BUS module?

Hello easo,
All of our CAN cards will work with a network as long as it is CAN compliant. In order to program our CAN cards all you will need is our CAN driver. Please let me know if you have any other questions. Have a great day!
Best Regards,
Adam G
National Instruments
Applications Engineer

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Can LabView simulate multiple nodes on a single CAN bus?

We currently are developing a system where a single control panel controls a number of drive motors over a CAN bus. Each of those drive motors has electronics and software in them which tracks the status of the motor, and this information is sent over the CAN bus to the control panel.
We have previously used Vector CANoe to simulate the activity of the drive motor nodes on the CAN bus during development of the control panel. We want to move to LabView in order to run this kind of simulation.
Is it possible for LabView to be used to run this kind of simulation? Each node would have its own CAN ID on the bus. It would need to send out appropriate periodic status messages on that CAN bus that would be based on user inputs. It would also need to display certain information based on commands sent to it via the control panel over CAN.
Thanks for the assistance.

Hi,
I believe that what you need is to simulate several CAN ports. There is a similar discussion form that I believe will answer you question. I hope this helps.
Regards
Krista S.
Applications Engineering
National Instruments

CAN BUS PXI 8461 over RS-485

Dear Ladies and Gentlemen,
in one of our projects we are trying to use a CAN Bus system over RS-485. I have got doubts if this can be realized since RS-485 is different to CAN Bus. RS-485 does not support any multimaster configurations without bigger efforts and so on. But this is not the issue for my question here. On a prototype board I implemented RS-485 drivers and receivers. I am trying to find a circuitry to run CAN bus via RS-485. The test setup shall be quite easy. PXI 8461 card -> RS-485 -> ASIC (with the implemented CAN Bus system) and the same way back. It is just a point to point connection. No multimaster configurations will be tested. My question is now if it is possible to use the PXI 8461 card in general? I am not sure if the electrical levels are equal. Perhabs somebody used this card in my configuration and can give me some support. If it is not possible are there any recommendations which cards can support my configuration?
Thanks a lot for your help!
Best regards,
Ingo

Hello Ingo,
thank you for contacting National Instruments. RS-485 specifies an electrical standard, like differential signal transmission and with a voltage around +/-200 mV. A DC-Offset from -7 to +12 Volts is allowed.
The CAN-Standard uses Voltages from -27 to 40 Volts. As you can see, you can not switch the electrical specification from CAN to RS-485, because the voltages differ already to much.
Why do you have the need to reduce the CAN Voltage down to RS-485 levels?
Best regards
MarianO

PCMCIA-GPIB for win 2000 running on cPCI bus via a cPCI PC Card Adapter

We are trying to use a PCMCIA-GPIB for win 2000 running on cPCI bus via a cPCI PC Card Adapter. Our OS is WIN2K SP3 and we are running version 1.7 (latest) of the drivers. Unfortunately when using the "getting started" wizard and the "verify software and hardware installation" the system occasionally doesn't pass the third test. When it does, we try to scan for instruments using MAX Explorer to talk to a Agilent CW generator via GPIB but it cannot find the instrument. Doing the same thing on a laptop PC is successfully achieved. Any information on this matter would be greatly appreciated.

Hi,
Although it should be transparent to the PCMCIA card, I have also have had some problems with some adapters. Specifically, I have been able to install the card in a PCI-PCMCIA adapter form Qualtech, but not if I'm using a cPCI Cirrus Logig adapter. We haven't been able to find a cause for this.
If you need a GPIB interface in a cPCI system, you might consider the PXI-GPIB. PXI fully compliant with the cPCI standard.
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Command message to CAN bus?

Hey I'm using NI USB-8473 adapter. Am I able to send command message to can bus with USB-8473? I have a battery charger which need to be configured via CAN bus.
Here is an example message:
m e 0x0240f010 3 0x01 0x80 0xFF sets current at 50 % and voltage at
100 %.
DLC CMD ID PARAM 0 PARAM 1 Meaning
3 0x01 I U Set current and voltage
I've used a program that is attached and not sure did it work. Is there any example program which fit to this purpose or something?
Thanks!
Attachments:
can_frame.vi ‏26 KB

I don't see anything wrong with the VI you attached, other than the overly bright colors. The sample command looks straightforward: you're sending three bytes with arbitration ID 0x0240f010. Those bytes are the command ID (0x01), the current (0x80, which is half of 0xFF = 50%), and the voltage (0xFF = maximum value for one byte, 100%).
Have you looked through the CAN examples provided with LabVIEW? Look at the Example Finder under the help menu, search for CAN.

Mixed message lengths on CAN Bus using USB-8473 Device

I am attempting to use the Frame API functions for LabVIEW
and send both 11-bit and 29-bit headers over a bus that uses both address lengths. I am currently successfully sending 11-bit
packets but the 29-bit packets are having their addressing truncated to the 11-bit
length when put on the bus.
As far as I can see I should have to set the standard
comparator to 0xCFFFFFFFF and then send messages. I am using a NI USB-8473 CAN Device for doing
this. Is there anything else I need to
change for extended addressing?

You need to OR your Extended ID with the 0x20000000 before giving it to the NCwriteNet.vi.
This is the way that the underlying CAN driver and hardware know that is it an extended ID you are trying to send.
The ID on the CAN bus will NOT have the ORed ID but only your ID. The driver/hardware filter the 0x20000000 from the ID.
This is the same for reading an extended ID on the CAN bus.
Before using the ArbitrationId, you need to AND the ArbitrationId with 0x1FFFFFFF to filter the extended flag out.

NMEA 2000 / Interfacing to Maretron Devices / Actisense NGT-1 NMEA 2000 USB Interface

Does anyone have any information and examples of interfacing LabView to a NMEA 2000 network? Specifically I would like to interface with a Maretron Marine NMEA 2000 network. Through this interface I wish to read and write data sentances to the various network devices.
I do have a Actisense NGT-1 NMEA 2000 USB Interface, that does bring in and display sentances using associated software, if that provides any help.
Thanks in advance,
David

Hi David ,
I am not aware of any specific examples, but it can be done using the VISA USB RAW commands. Look at the links I provided you. You can search for VISA USB RAW to find more information at ni.com.
How Can I Communicate With a Device Using NI-VISA USB RAW Mode?
How Do I Use VISA To Do An Interrupt Out Transfer For My USB RAW Device?
What is the Difference Between USB Raw Control and USB Raw Bulk?
Thanks and have a great day.
Esmail Hamdan | Applications Engineering | National Instruments

What are the advantages of NI-XNET over NI-CAN

Assuming that I'm only interested in CAN, are there specific advantages to going with NI-XNET over NI-CAN?

Olivier: Thank you for the comments about the disclaimer in my recent post here. While re-reading the post, I realized that I mis-stated one substantial fact, and that was the network speed. I have worked with high speed CAN for so long I automatically stated 500 KBPS as the network speed I used to achieve the 95% bus loading. However, in this case I meant and should have said 250 KBPS. It is possible to run J1939 CAN at 500 KBPS (I haven't tried it) but the SAE has not as of this writing adopted 500 KBPS as a bus speed for J1939. As J1939 CAN frames are (to simply state it) merely CAN frames filled out to a full 8 byte data package (albeit with an extended 29 bit arbitration ID vs the standard 11 bit ID of high speed CAN) and having examined the information Olivier pointed out (almost 9 months ago) I have no doubt that the XNET cards can deliver the high performance required to achieve near 100 % bus loading at the higher network speeds.
Now for more disclaimers:
I have exchanged emails and spoken with Olivier and others at NI at length about their CAN technology and have encouraged them to push the limits so those of us out in the field can continue to stay ahead of the competition using our favorite tool, LabVIEW. I have received no compensation for my views on this matter. For those of you that want to put my experience into perspective, I have worked with LabVIEW for 16 years & CAN for 5 years. My compensation comes from being able to get the work I am given done on time and under budget (usually ahead of time) - and I couldn't do it without LabVIEW and the support provided by National Instruments application engineers and the members and contributors to these forums. Thanks!

My kids share use my apple id for their ipods. Now I'm getting an ipad and wondering if I should get a new id (they don't want to start over). Can we share but not have to see each other's apps, contacts, etc?

My kids use my apple id for their ipods. Now I'm getting an ipad and wondering if I should get a new id (they don't want to start over). Can we share the id (my email address) but not have to see each other's apps, contacts, etc? I'd rather share I think, but don't want to create a nightmare for myself. Also, I already have a kindle app (with purchased content) for my computer - does getting a new id for itunes change my ability to access my kindle account on my ipad? Thanks!

So first I'd say that it's not a good idea to start a new apple id if you have a large purchase history. You may not transfer purchases between apple IDs. You should consider some other options listed here http://support.apple.com/kb/HE37 Primarily the option where you or your children have seperate icloud accounts/email accounts that sync their contacts apart from yours. You may use your apple ID for purchases and use a different one for icloud/email/etc.

I just recently purchased a mini iPad for my child. It was set up in the Apple store with my Apple id. I now want to create an Apple id for my child and switch it over, how can I go about that. I already downloaded some of the games from my account.

I just recently purchased a mini iPad for my child. It was set up in the Apple store with my Apple id. I now want to create an Apple id for my child and switch it over, how can I go about that. I already downloaded some of the games from my account.

With a new account, you'll need to rebuy the games.
Each user should have their own icloud account, otherwise they end up getting the same emails, contacts, calendars, notes, reminders, etc. - usually not what you want. But if all have been sharing the same itunes ID, keep it that way, you can have different IDs for itunes and icloud.
If you already have another icloud account, and want to set it up on a device, then go to Settings>icloud, scroll to bottom of screen and tap Delete Account. This only disconnects the device from that account, no data is lost on icloud. Then enter the account ID that you want to use.
To create a new icloud account, go to
http://www.apple.com/icloud/setup/

Today I deleted a gmail account using my computer. I also added a new work gmail address. Now I want to sync my phone and tablet with the new email address. I've looked all over and can't find out how to do it.

Today I deleted a gmail account using my computer. I also added a new work gmail address. Now I want to sync my phone and tablet with the new email address. I've looked all over and can't find out how to do it.
Peg

Hi there T&P63385!
Look no further! I have the answer for you! You can add a new email account to your android device by following these steps: http://support.verizonwireless.com/clc/devices/knowledge_base.html?id=31401
Now I do want to let you know that your phone has a "main" gmail account. If this "main" gmail account was the one you deleted it may be best that you reset your phone and activate it to your new gmail address.
The reason I recommend doing this is all of your purchased application information is also tied to your gmail.
Ensure your personal information is backed up (contacts, pictures, etc) and follow these steps to Hard Reset your phone:http://support.verizonwireless.com/clc/devices/knowledge_base.html?id=31308
Let me know if you have any other questions!
Thanks,
MelissaM_VZW
Follow us on Twitter @vzwsupport

Using CAN bus to transport and play the stream audio data

hello,
Just want to build a PC-Based control network using CAN bus (Ethernet not considered).The system is separated two parts , one is the front unit(FU), and the other is the centeral unit(CU). FU performs dialing-up number to the CU , and play the stream audio media data come from CU, CU monitor the telephone call activated from FU's user , send rm or mp3 data to the FU . I'd like to know if CAN bus could realize this function？ if it can , which hardware must be supplied ? Is there any suggestion that not use PBX to realize the voice (telphone) communication ? Please give an solution , your advise is greatly appreciated . Thanks.
David

Hi David,
the CAN protocol essentially just gives you the ability to transfer (broadcast) up to eight data bytes across the network at a maximum data rate of 1 Mbit/s.
There are so-called higher level (or layer) protocols that further specify the data exchange between a data producer can the consumer (DeviceNet, CANopen, etc.).
If your application is not tied to any of those protocols, that means you have the freedom to design all (CAN) nodes of your network, you can implement your own protocol based on the eight data bytes and the arbitration ID CAN offers.
For more information on the CAN protocol, take a look at appendix B of the NI-CAN Hardware and Software Manual, or visit the web site of CAN in Automation (CiA).
For your particular application you would need a CAN port on both the FU and the CU (preferably high-speed physical layer) and a PCI interface CAN card for you development.
-B2k

Since Apple already has a SMS/MMS app for the iPhone, which can be used over WiFi, can the same app be installed on the iPad 2?

I have an iPhone 3GS, and realized I do most of my SMS/MMS messaging at home, when connected to my WiFi. Then I began to think, if I'm using the messaging app over WiFi, can the SAME app (which, personally I like much better than the third party apps) be installed on the iPad 2 (which I'm still waiting from back order)?

Incorrect.
SMS/MMS is exchanged over the same network as calls.
"Dumb" phones or phones not in the smart category that don't have internet access in any shape, form, or fashion can exchange SMS/MMS.
Since SMS/MMS (a poor man's email with cell phones since it is very limited) is a cash cow for carriers and very profitable, why wouldn't cell phone carriers be interested in including SMS/MMS as an additional option (and of course at an additional expense) with a data plan only for the iPad? They certainly are interested in it but they can't since SMS/MMS is exchanged over the same network as calls.
Get me the IPAD SMS app
Take your whining someplace else. The self-entitlement displayed here by some is laughable.

Just upgraded Elements 9 to 10. my Neat Image plugin did not carry over. Can anyone help me?

Just upgraded Elements 9 to 10. My neat image plugin did not carry over. Can anyone help me?

Go to Program Files or on 64 bit systems Program Files (x86) and find the file NeatImage.8bf in the PSE9 plug-ins folder. Copy it to the PSE10 plug-ins folder.
Alternatively go to Program Files\Neat Image and copy the file from the source.

Read all raw data out of the CAN bus

Hello,
our company has purchased a complete CAN bus HW; chasis 9174 and module 9862. I am using NI-DAQmx 9.5.5, NI-XNET 1.5.
I have connected the module (CAN High, CAN Low, Vsupp 12V - Car battery, GND - Car battery) to the ABS CAN bus segment.
Using Osciloscope on CAN High and CAN Low wires I can see communication rolling when I start the car ignition.
I had no success using the Bus Monitor utility.
I made a very simple read VI hoping to monitor some traffic.
All VIs run without error, but the Read VI is returning same data (Ignition off or on), I do not know what am I supposed to recieve, what kind of data is the output.
I think it is wrong, since I get the same data out of it no matter what the CAN bus traffic is.
The array of frames is filled with two frames with message identifiers that should be transmitted. I added two frames into emopty database and no signals.
1) From my understanding, the Bus Monitor utility monitors only those messages that I specify in the database, so that no messages/frames = no traffic monitored, is this correct ?
2) Is there any way, how to read all raw data from the bus ? What VI palettes to use... ?

Problem solved, the company that was preparing the car made wrong labels (swapped CAN H with CAN L)

Nmea 2000 over pxi - can bus (NI PXI-8460/2​)

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Nmea 2000 over pxi - can bus (NI PXI-8460/2)