Re: I connect my device to a truck's can port (J1939) , the truck present an error .

I think its because my device set the ACK bit , and the truck can not receive the messages . Is that possible ? 

     On Monday, January 19, 2015 6:54 PM, Heinz-Jürgen Oertel <[email protected]> wrote:
   

 #yiv9619346021 p, #yiv9619346021 li {white-space:pre-wrap;}Am Montag, 19. Januar 2015, 09:56:14 schrieb c yl:> Hi Everyone:>     I'm connecting my can port of an arm7 board (lpc2478 with ecos which works all OK) to a truck's can port, and the truck presents an error: I think its communication error or something. And at the same time my board can receive can packages right. If I set my can port to listen only mode , the truck tells no error, and I can receive can packages but I can't send then .    Can anyone tell me why the truck tells error when my can port works at a normal mode? Should I work only in a listen only mode?  Hi,  can you read out your devices error counters, especially the transmit error counter of the lpc2478 when you connect and you are not in listen only mode. -- mit freundlichen Grüßen Heinz-Jürgen Oertel emtas GmbH