PROFINET Communication
‑98‑
● Each device in the ring network must be configured as an MRP manager or client.
● Configuration of the topological structure is not required during MRP
configuration. You can configure the topological structure after the MRP
configuration is complete if needed.
● Do not connect devices without the MRP function configured to the ring network.
Otherwise, connection failure or frequent disconnections will occur.
● In a PROFINET network configured with MRP, when a disconnection occurs in the
ring network, handshaking will be performed again. In this case, the AC drive slave
reports ERR164, which is cleared automatically (if the automatic clearing function
is supported) after the handshaking is complete. You can also manually clear the
fault. After the network recovers from the disconnection, the preceding operations
are repeated.
● Even if the MRP is configured, when two disconnections occur in the network, all
nodes between the two disconnected points cannot be connected normally. To
avoid such problems, the star topology is recommended.
5.9 Fault Diagnosis
5.9.1 Communication Faults
When the communication function is configured incorrectly, both the PLC and
rectifier panel will report an error. You can troubleshoot the fault based on diagnosis
information on the PLC and rectifier panel.
The following table describes the fault code of the rectifier module.
Table 5–5 Fault code of the rectifier module
Fault Code Possible Cause Solution
E164.1 The communication between the
communication card and the master is
disconnected.
Check whether the connection
between the communication card and
PLC is in poor contact. Make sure that
they are properly connected.
5.9.2 Troubleshooting
The following table describes the faults that may occur during use of the MD500‑PN1
card and the AC drive.
To Next Page
Loading...
