Hello, we have a XVR2-W0019 (with XLI) in a Drive application. Since last week we temporarily get the Error F8844 wiht detail diagnosis 0345031F (i found no documentation for the detail Diagnosis). We are not able to reset the error via Drive engineering or via the command "C0500", after a power off- on of the system the XVR works again- sometimes for only a few minutes, sometimes for the whole day. I already checked the 24V power supply. In the "idle" state of the system we have 24.5V and in the "running" state (all 24V Motor brakes open etc.) we have 23.9V The XVR was configured as "External controlled via Fieldbus" with the function block "MB_ECATSoEPowerSupplyStandalone". When the error occured i changed it as a test to "Auto-Softstart if OM" but it didn't changed anything and the error still occus. Is there any "bug" known with this problem. The error description says "Replace defective optional card/ Firmware update of subsystems might be required/ Replace device" Could the problem caused by a failure of the XLI-Bus between XVR and XLI? Thanks for your help. Regards Max
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