bff62048 error (overflow chip) - nican library

[pegoraro]

Hi,
I am sending, at the same time, two different messages through a CAN-bus where the target is a computer which runs a labview can application using the nican library.
Reading the messages, I get a error that means "overflow chip" (0xbff62048). I got the name consulting the nican.h file.
I would like to know the reasons of this error, what does it means and possible solutions.

Any help ?
Thanks in advance!

[AaronK]

Hi pegoraro,

The 0xBFF62048 overflow in the CAN communication occurs when frames are received back-to-back for long periods. The solution is to use the Set Net Interface mask and comparators to filter out unnecessary frames and reduce overall bus traffic.

Hope this helps out.

Best Regards,
Aaron K.
Application Engineer
National Instruments

[pegoraro]

Hi Aaronk,

The problem is that I want to send a unique message, actually a broadcast message, to all devices over the network at the same time. At this moment, all of the devices are answering with a message which contains their numbers.
Thus, in a specific time, all the devices send messages to the computer. The computer must accept them, without loses ! Do you have any idea how to do that ?
My pci board, on the computer, has two can ports. I thought to use one only to transmitt data and other one only to receive. Would it be a good idea ?

A lot of thanks in advance,

Regards,

Pegoraro.

[bondhan]

Hi AaaronK,

 The solution is to use the Set Net Interface mask and comparators to filter out unnecessary frames and reduce overall bus traffic.

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I have this error, but how to implement this on CANOpen library? Thank you

[bondhan]

HI all,

I solved the problem. I give some delay to the PDO object (period ms), the delay should be not too big and too small.
Thanks