CANopen and CANlink Communication
‑61‑
3. Check whether the CAN communication baud rate of the power supply unit (set
through Fd‑12) is the same as that of the PLC.
4. Check whether the Fd‑13 (CAN station number) setting of the current AC drive is
unique from that of other AC drives are the same. Avoid duplication to prevent
conflicts.
Table 3–24 FAQ and Solutions
FAQ
Solution
Failure to write
frequency
1. Check the address and D element in the configuration table
based on F0‑03. When F0‑03 is set to 0, the I/O mapping
should be 2000sub8. When F0‑03 is set to 9, the I/O mapping
should be 2073sub11.
2. Check whether the termination resistor is connected. If not,
connect the termination resistor and then power on the AC
drive again.
Failure to start the AC
drive
1. Ensure that F0‑02 is set to 2 (communication). 0 means
operating panel and 1 means terminal.
2. Check whether the termination resistor is connected. If not,
connect the termination resistor and then power on the AC
drive again.
Unstable connection
1. Ensure stable connection on PLC side.
2. Ensure stable connection on AC drive side and firm contact
between the LAN cable and the LAN port.
3. Check whether the signal cable is close to the power cable.
Keep the signal cable away from the power cable.
Incorrect reading
1. Ensure that the address configured is correct.
2. Ensure that data conversion is performed.
3. Ensure that the D element is not occupied.
4. Check the D element for I/O mapping.
3.6 Communication Error
3.6.1 Simple Diagnosis
Description
The parameter Fd‑33 provides a simple diagnostic function that displays the number
of CAN bus shutdown times due to strong interference after the AC drive is powered
on.
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