CAN BUS Interface Problem.

Hi.

I used the Arduino Uno R3 with the Arduino CAN BUS shield, downloaded the correct libraries (send and receive). It uploaded without any errors and I am using kaspersky to check the output.

My question is why does the RX and TX led's always on? should it not blink with sending info and receiving info?

And can you use ONE Arduino Shield for simultaneously sending and receiving?

Regards