Hi, I can find alot of documentation on generating remote frame requests on the 87c591 and sja1000 CAN interfaces , but can find no information on how to handle a request. All code that I have tried to far seems to lock the interrupt controller in a permanent Receive state , as there are no frames in the buffer for me to deal with and release - thus not able to clear the interrupt flag (Which is set all the time !!) Any info / documents / example code would be most welcome. Chris mailto:chris.foulds@tagelectronics.co.uk