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NI-CAN: (Hex 0xBFF62024) The object handle (ObjHandle) is invalid.

NI-CAN:  (Hex 0xBFF62024) The object handle (ObjHandle) is invalid. 

 

Solutions: Verify that the Open function succeeded; 

 

Verify that you did not close the handle in another thread of execution (such as with ncReset).

 

I have two NI USB-8473 hooked up to a CAN Breakout Box with NI Single Terminal CAN Cables and an NI USB Digital I/O Power Supply.

 

The USB cable part of the NI USB-8473 is hooked to my PC's USB ports and are CAN0 and CAN1.

 

I am running modified version of:

 

"C:\Users\Public\Documents\National Instruments\NI-CAN\Examples\MS Visual C\Frame API examples\CAN Receive\CAN Receive.c"

 

and

 

http://ftp.ni.com/pub/devzone/epd/transport_protocol_8.6_2v.zip

 

J1939 NI CAN Frame Example.vi

 

I ran

 

NIMax.exe

 

and did a test on the two NI USB-8473 and they passed.

 

Below are the settings for the two NI USB-8473's:

My System  Devices and Interfaces   NI-CAN Devices    USB-8473     CAN1      Interface Name:   CAN1      Location:         Port 1      Transceiver:      High-Speed      Transceiver Name: Philips TJA1041      Baud Rate:        125.000 kBaud      Sample Point:     87.5%      BTR0:             0x03      BTR1:             0x1C

   USB-8473     CAN0      Interface Name:   CAN0      Location:         Port 1      Transceiver:      High-Speed      Transceiver Name: Philips TJA1041      Baud Rate:        125.000 kBaud      Sample Point:     87.5%      BTR0:             0x03      BTR1:             0x1C

When I run LabView

"J1939 NI CAN Frame Example.vi"

and click run, Then select CAN1, Then set buad to 125000, then click the send button.

I see the CAN green light on the USB-8473 turn on then off for about 1/3 second.

Then I run the "c" code which reads CAN0 at 125000 baud. The ncConfig works. The ncReadMult call fails with 0xBFF62024. The ncStatusToString generates the "NI-CAN:  (Hex 0xBFF62024) The object handle (ObjHandle) is invalid." error message from the 0xBFF62024 Status.

It was woking last week but now I keep getting the above message.

When I was running the LavView .vi file I would sometimes forget to click stop. If I just clicked "x" in the lavView before clicking Stop. I would get a bunch of errors and couldn't get it to run without errors. To fix this, I would unplug the two USB connectors and plug them back in and that would make future runs work.

Any help in getting this to work without the 0xBFF62024 error from calling ncReadMult is appreciated.

Thanks.

--------------- Also, ---------------

C:\Users\Public\Documents\National Instruments\NI-CAN\Examples\MS Visual C\Frame API examples\CAN Receive\nicanmsc.lib

I was trying to make a x64 version so I can use Java JNI and the can library on an x64 machine with x64 Java.

Do you know if there is a 64bit version of nicanmsc.lib?

 

 

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Message 1 of 4
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NI-CAN:  (Hex 0xBFF62024) The object handle (ObjHandle) is invalid.  

Solutions: Verify that the Open function succeeded;  

Verify that you did not close the handle in another thread of execution (such as with ncReset).


I have two NI USB-8473 hooked up to a CAN Breakout Box with NI Single Terminal CAN Cables and an NI USB Digital I/O Power Supply.

The USB cable part of the NI USB-8473 is hooked to my PC's USB ports and are CAN0 and CAN1.


I am running modified version of:

"C:\Users\Public\Documents\National Instruments\NI-CAN\Examples\MS Visual C\Frame API examples\CAN Receive\CAN Receive.c"

and

http://ftp.ni.com/pub/devzone/epd/transport_protocol_8.6_2v.zip

J1939 NI CAN Frame Example.vi


I ran 

NIMax.exe

and did a test on the two NI USB-8473 and they passed.

Below are the settings for the two NI USB-8473's:

My System
    Devices and Interfaces
        NI-CAN Devices
            USB-8473
                CAN1
                    Interface Name:   CAN1
                    Location:         Port 1
                    Transceiver:      High-Speed
                    Transceiver Name: Philips TJA1041
                    Baud Rate:        125.000 kBaud
                    Sample Point:     87.5%
                    BTR0:             0x03
                    BTR1:             0x1C

            USB-8473
                CAN0
                    Interface Name:   CAN0
                    Location:         Port 1
                    Transceiver:      High-Speed
                    Transceiver Name: Philips TJA1041
                    Baud Rate:        125.000 kBaud
                    Sample Point:     87.5%
                    BTR0:             0x03
                    BTR1:             0x1C

When I run LabView

"J1939 NI CAN Frame Example.vi"

and click run, Then select CAN1, Then set buad to 125000, then click the send button.

I see the CAN green light on the USB-8473 turn on then off for about 1/3 second.

Then I run the "c" code which reads CAN0 at 125000 baud. 
The ncConfig works.
The ncReadMult call fails with 0xBFF62024.
The ncStatusToString generates the
"NI-CAN:  (Hex 0xBFF62024) The object handle (ObjHandle) is invalid."
error message from the 0xBFF62024 Status.

It was woking last week but now I keep getting the above message.

When I was running the LavView .vi file I would sometimes forget to click
stop.
If I just clicked "x" in the lavView before clicking Stop.
I would get a bunch of errors and couldn't get it to run without errors.
To fix this,
I would unplug the two USB connectors and plug them back in and that
would make future runs work.

Any help in getting this to work without the 
0xBFF62024
error from calling
ncReadMult is appreciated.

Thanks.

---------------
Also, 
---------------


C:\Users\Public\Documents\National Instruments\NI-CAN\Examples\MS Visual C\Frame API examples\CAN Receive\nicanmsc.lib


I was trying to make a x64 version so I can use Java JNI and the can library on an x64 machine with x64 Java.


Do you know if there is a 64bit version of nicanmsc.lib?



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Message 2 of 4
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I solved one of my problems.


I deleted the ncOpenObject lines by mistake after the ncConfig lines.


---

/* open the CAN Network Interface Object */

Status = ncOpenObject(Interface, &NetIntfObjhRx);

   

if (Status < 0) 

{

        PrintStat(Status,"ncOpenObject");

}  

---


I put these lines back in and it is working again. :)


I still need a x64 bit version of  nicanmsc.lib so I can us the can code and JNI with java 64 bit version.


Is there a nicanmsc.lib for x64?


Thanks

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Message 3 of 4
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At this time, there is not a 64 bit version of nicanmsc.lib. The code can still be run on a 64 bit machine but it must be compiled for a 32 bit processor.

Jeff L
National Instruments
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Message 4 of 4
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