CANopen and CANlink Communication
‑62‑
Diagnostic
If the displayed value is greater than 0 and does not increase, it is indicated that the
network once suffered strong interference for a long time. If the displayed value is
greater than 0 and increases within 5 minutes, it is indicated that the network is
suffering interference or the configuration is inappropriate. Find the specific cause
and eliminate the problem.
Solution
Check whether the baud rates of all the nodes are the same or whether the addresses
conflict. Check whether the dial is set properly and whether the baud rate and
address of the main controller are correct.
Check whether termination resistors are provided at both ends of the bus. Power off
all devices and use a multimeter to measure whether the resistance between CANH
and CANL of the bus is within the range of 50 Ω to 60 Ω.
Check whether the nodes CANH and CANL are connected reversely and whether the
CGND terminal of the bus is connected. Generally, you just need to connect all CGND
terminals of all devices together and do not need to ground them.
To Next Page
Loading...
