Incorrect process data in the input image

Description of the behavior:
The process image of the input signals is the same as that of the output signals of the respective EtherCAT device.
 

Conditions under which the behavior occurs:

In the EtherCAT Master, the option Use LRW instead of LRD/LWR is activated (default setting). 
An EtherCAT device is disconnected or the device drops out of the Operational/Safe-Operational status.

 
Affected products:
Controller c430
Controller c520
Controller c550
Servo-Inverter i950 (PLC, 0x4000=TA User)

Short-term measures, Recommendations,Rating:
The status of the EtherCAT device must always be queried. If the device is no longer in the Operational , the process image of the inputs may no longer be used by the PLC application.

Alternatively, the option Use LRW instead of LRD/LWR must be deactivated in this case.

Further information on this in the appendix.

Note: No change to this behavior is planned!


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URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/202500271/1/
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Taxonomy: Controller c430 , Controller c520 , Controller c550 , Controller c500
AKB-ID: 202500271
Last update: 2025/09/29
Category: Version Informations

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