Hi,
Is there a 120 Ohm resistor across the CAN High and CAN Low lines in the RollerCAN? and can it be disabled?
I have four of these connected to the same CAN bus, and am measuring a buss resistance to below 30 Ohms, so it appears that each unit is loading down the buss.
As you probably know, there is only meant to be a 120 ohm buss termination resistor on the ends of the buss, so two of them, which gives a buss resistance of 60 ohms.
The 30 ohms I'm getting is really stuffing up the CAN communication...