PEAK-System Forum

Hi, i am new to can bus and i have purchased the PCAN PCI card for my masters project at university. I am working on developing a modular manufacturing tool with intelligent distributed modules that will be connected via a can bus network.

I have attempted to connect the card to the can transceivers and then on to my micro's but i am not receiving any messages back at the PC. Is there a way to check if my hardware is all connected properly. I know with RS232 communications the TX and RX lines can be bridged and then a hardware test can be conducted as the transmitted data will be mirrored back.

I have terminated both ends of the bus, and i have previously verified that the transceivers are working as i transmitted data between two micro's via a can bus network.

Please advise.

Regards, and Thanks in advance

Dear,
you need minimum two actice CAN nodes (Modules) running with the same Baudrate and connected with a terminated cable (2x120 Ohm - one on each end) to get a communication running. You could NOT test a single CAN Node whit itself. CAN is a differential BUS the Sigbal Level is the difference between CAN-H and CAN-L.

I have terminated both ends of the bus, and i have previously verified that the transceivers are working as i transmitted data between two micro's via a can bus network.

If this is working, simply add the PCI CAN card as a third CAN node to the net, start the PCAN-View Software, select the Baudrate (be sure that the sample point is nearly the same as you select for the µC CAN nodes) and see how the two nodes communicate