Thanks for the reply.
I measured the voltage on the CAN BUS, voltages are as follows:
With end-display resistors off (CAN BUS led solid on)
CANL - CANH = 2.073V
COM - CANL = 1.312V
COM - CANH = 3.383V
With end-display resistors on (CAN BUS led fickering)
CANL - CANH = 0.2V
COM - CANL = 2.14V
COM - CANH = 2.34V
I am curious, do I need to ground my arduino to the elevator system so that they have a common ground?
I will try changing the serial speed to 115200 (only set the speed to 9400 because putty had it asstandard)
As for the serial monitor and putty display. They display CAN BUS Shield init okay, everything looks good up to the point where data needs to be flowing into my life, haha. But no Data
One more question, I am not too sure as to what the baudrate is on the system, I have tried all the baudrates I could think off but that obviously also didn't help.
What will happen if the wrong baudrate is selected? should there be data coming in? or would that prevent data from coming in?
Thanks a ton for the help
Jacques Nel