CE4 warning (BUS-OFF state) is not reset after CAN reset node (remedied from V7.0)

Which products are affected?
9300EP position controller V7.0
9300ES servo controller V7.0

Eliminated function restriction
After execution of the CAN reset node the system bus returned to the 'Operational' state. However, the pending 'CE4 warning' (BUS-OFF state) remained active. The 'Warning C0168' is indicated under code C0168 and C0183 (drive diagnostics).

Now, the internal CE4 message is set and reset dependent on the CAN controller state.




Which products are affected?
9300EP position controller <= V6.2
9300ES servo controller <= V6.2

What happens?
After execution of the CAN reset node the system bus returns to the 'Operational' state. However, the pending 'CE4 warning' (BUS-OFF state) remains active. The 'Warning C168' is indicated under code C0168 and C0183 (drive diagnostics).

When does the problem occur?
The problem occurs after execution of a CAN reset node although a CE4 warning has been pending.

Possible diagnostics?
The system bus is in the 'Operational' state after execution of a CAN reset node but the CE4 warning is still indicated.

Short-term measures/recommendations?
Do not set the CE4 system bus monitoring to warning.

Evaluation:
The system works but a wrong warning is indicated.

URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/200607048/1/
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