CAN Transmitt frame on RTSI.

Hi all!
I have a problem, I want to send CAN frames when I receive an RTSI pulse. To do that i configured my CAN Network Interface, and i generated a pulse train. At the begining, i configured the delay between two pulse at 700µs. It seems to work, but i noticed that sometimes after a day or after a week, i get the warning 1073094950 : NI-CAN: (Hex 0x3FF62126) You configured CAN transmit when a RTSI input pulses, and the RTSI rate occurs faster than CAN frames can be transmitted at the specified baud rate. Solution: Configure the source of RTSI pulse (i.e. DAQ counter) for a slower rate.
I read in the data sheet : When you configure a DAQ card to pulse the RTSI signal
periodically, do not exceed 1000 Hertz (pulse every millisecond). If the RTSI
input is pulsed faster than 1kHz on a consistent basis, CAN performance will be
adversely affected (for example, lost data frames).
After that i configured the delay between to pulses to 1ms and tryed again.... with the same result... sometimes i don't know why i receieved this damned warning !!! I also tryed with 1,6 ms ... (the maximum i can have between two pulses).
I don't know why i have these limitation from this card ! I know a solution will be to use FPGA instead on these poor CAN cards but i don't have the time to rewrite the code with FPGA (i meet the customer next week). So i just want to know if someone else meet this problem (and eventually has a solution) or can explain this strange phenomena ....
Thanks.... for all your futures answers!

Hi dirk!
The port used to send the frame on RTSI pulse is only used for this .... in fact i only used one port of my 2 ports CAN board (as you suggest in your last message). Moreover, i put the comparator and mask to CFFFFFFF (to ignore incoming frames). So there is no other activity on this port !
I already use Network interface this can not be improved.
The pulse train used for the RTSI signal is generated by a NI board, and i checked the signal with a scope, it seems to be ok ...
The problem is in my application i can not decrease the frequency of the RTSI pulse ... otherwise i will not be compliant with the customer specification. My last idea to resolve the problem is to use two different ports (of two differents boards) to send the frames. I will send a RTSI pulse on each port every 2 ms... i will try and i hope it will work ...
But again if you have other ideas ....
Thanks !

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Attachments:
CAN Transmit multiple_Output_RTSI.vi ‏104 KB

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2. When you configure the Network Interface to ‘Transmit a CAN Frame on
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1. ncConfig ("CAN1", 8, {0x80000006,0x80000007,...}, {0x00000001,0x0007A120,...})
Status: 0 (VI_SUCCESS)
2. ncConfig ("CAN0", 8, {0x80000006,0x80000007,...}, {0x00000001,0x0007A120,...})
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Status: 0 (VI_SUCCESS)
4. ncOpenObject ("CAN0:TD5", 41419424)
Status: 0 (VI_SUCCESS)
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Status: 0 (VI_SUCCESS)
6. ncCloseObject (41419424)
Status: 0 (VI_SUCCESS)
7. ncConfig ("CAN1:TD5", 7, {0x8000000F,0x80000013,...}, {0x00002710,0x0000000A,...})
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8. ncConfig ("CAN0:TD5", 12, {0x8000000F,0x80000013,...}, {0x000003E8,0x00000000,...})
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Status: 0 (VI_SUCCESS)
> 10. ncOpenObject ("CAN0:TD5", 0)
> Status: 0xBFF6211D
> 11. ncWaitForState (41419424, 17, 20000, 18)
> Status: 0xBFF62021
12. ncCloseObject (41419424)
Status: 0 (VI_SUCCESS)
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> Status: 0xBFF62024
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