0

Problem with J1939 PDU1 messages

Jesus 6 months ago in IQANdesign updated by Gustav Widén (System support) 6 months ago 4

Hi,

I'm having communication problems with a J1939 control module and I can't solve them.

There are some messages inside the PDU1 that I can't read through IQAN, I have analysed the can with a peak-can and the messages exist inside the can.

The messages are as follows:

Image 4550


The configuration I have in IQAN for each of these messages, for example ID: 7050hex is as follows:

Image 4551

I also tried assigning PGN=PF*256=28672, but that didn't work either.

I can't assign PGN 112 (70hex), when I exit the message and enter again, the program has automatically set it back to 0. The Destination adress can be assigned without any problem.

The module has address 33 (21hex):

Image 4552


Analysing the CAN, it is clear that messages are being sent:

Image 4553

If you can tell me how to configure the channels to be able to read these messages, it would be a great help.

Thanks you for your attention.

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multiplexor issue, messages not processed

george zalesski 6 months ago in IQANdesign updated by Gustav Widén (System support) 6 months ago 1

HI,

I'm using a J1939 PROP _B massage that is multiplexed,  The index in in byte 3 (mask 0XFF0000) . If I remove the page protocol, the massage is processed  and I get the data. I can manually process the Index and get the data, but when I use the index and page mask the massage is not processed.  Has anyone see this?  index is 8 bits.  I have 16 index's values starting from 0 to 16 defined.

Image 4542


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Not reproducible

Access violation at address 0000000002CF5E0F in module 'IQANdesign.exe'. Read of address 00000000000000A8.

Anna 6 months ago in IQANdesign updated by Gustav Widén (System support) 2 months ago 5

Access violation at address 0000000002CF5E0F in module 'IQANdesign.exe'. Read of address 00000000000000A8.

I am trying to use externals to break my project down into modules. As I am adding these modules in to the main project, I keep getting this error.  Once it occurs, the entire project file is corrupt and I get the same error every time I try to open it. I am stuck.

0
Answered

Using a PWM out with an MR above 100% on an XC43

John Ditner 6 months ago updated by Gustav Widén (System support) 4 months ago 1

What happens to a PWM out signal when it is above the max of 100%. I have a function that is working particularly well at 103%. note: PWM freq = 100Hz.

0
Declined

Most and least significant bit indexing

Johan Palm 6 months ago in IQANdesign updated by Gustav Widén (System support) 5 months ago 3

Hi,

Would you consider adding most and least significant bit indexing as native IQAN functions? Presumably it could be efficiently implemented using either instructions native to the controller, or in any case using de Bruijn.


Example: lsb_example.idax

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Md47 appears online but cannot connect via IQANconnect

Brandon Delgado 7 months ago in IQANconnect updated by Gustav Widén (System support) 6 months ago 1

Hello IQAN Connect shows the device and will indicate that it is connected. However an attempt to send file results in "no Hand shake". this is seen on D6.07 and also on IQANgo.

Image 4526

Image 4527

Image 4528

Image 4529

Thanks,

Brandon

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Cant ungroup in latest version

NEricson 7 months ago in IQANdesign updated by Gustav Widén (System support) 6 months ago 1

Building the GUI with the latest version and I yet to be allowed to ungroup a group.

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Memory utilization when instantiating multiple identical external library function groups

Johan Palm 7 months ago in IQANdesign updated 6 months ago 2

When IQANdesign does not provide a native function/operation, such a function/operation could be implemented in an external library, for repeated use in application logic.

Currently, the benefit of implementing the function in an external library is that any future change of said function/operation would only have to be done once, which is great.

But, would it not be possible to also save memory? I.e. could it be possible that multiple instances of the same external library function group would only be instantiated once in application memory, even though it is called multiple times per cycle?

(Unrelated to the topic, but related to the origin of the topic, do you have any plans to introduce native functions for most- and least significant bit indexing? E.g. using de Bruijn multiplication/lookup tables would be so much cheaper if done natively.)

Thanks!

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IQAN Online Training 2024-25

Arnaldo Burini 7 months ago in IQANdesign updated by Gustav Widén (System support) 6 months ago 1

I´m looking for the 23-24 October 2024 IQANdesign Online Training but can´t find where to register.

Please if you can help me.

Thanks