Lenze EtherCAT Controller-based Automation - Manual (Page 180)

12 Diagnostics
12.5 Error scenarios
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Lenze · Controller-based Automation · EtherCAT® Communication Manual · DMS 6.4 EN · 04/2014 · TD17
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12.5.5 Message: EtherCAT cable not connected / connected
12.5.6 Message: Frame Response Error
Cause The bus cable between the Lenze Controller and the first node has been unplugged.
If a previously removed bus cable has been plugged into the first EtherCAT node, the
message "EtherCAT_Master: EtherCAT cable connected" is entered in the
logbook of the controller. The EtherCAT connection is re-established.
Since the EtherCAT slave sync managers do not receive any messages, a time-out expires
and the slaves change to the "Safe-Operational" state.
Error message EtherCAT_Master: EtherCAT cable not connected
...
EtherCAT_Master: EtherCAT cable connected
Remedies After the bus cable has been plugged in again, Restarting the EtherCAT fieldbus ( 159) .
Cause A frame sent by the master does not return to the master until the next cycle.
• The task utilisation is too high so that a sent frame takes longer than the time to the next
start of the bus cycle task.
• The EtherCAT bus cycle task does not have the highest IEC task priority or another task
has the same IEC task priority so that the EtherCAT bus cycle task is suppressed.
• Due to an error, the slave does not forward any frames.
• Only a switch or an ET2000 is connected to the Lenze Controller, but no further slave.
Error message EtherCAT_Master: Frame response error (repeated 1 time)
EtherCAT_Master: Frame response error (repeated 10 times)
EtherCAT_Master: Frame response error (repeated 100 times)
Remedies • Reduce the program code or increase the bus task cycle time.
• Assign the sole and highest IEC task priority to the EtherCAT bus cycle task.
• Correct the slave error.
• Correct the bus structure.