Defect in cross comparis.

What does F01611 mean?

A critical data exchange error has occurred between the internal processors, indicating a defect in the cross-comparison function or processor communication, often related to safety functions. This can be caused by EMC interference or internal hardware issues, leading to unsafe operating conditions or a drive shutdown.

• Internal hardware fault on the drive's safety-rated control unit (e.g., F-CPU within CU320-2), specifically in the cross-comparison circuitry.
• Firmware bug affecting the internal communication or cross-comparison routines between dual processors responsible for safety.
• Electromagnetic interference (EMI) causing transient data corruption during critical internal processor communication.
• Corrupted safety-relevant data in internal RAM or ROM of the control unit, leading to comparison mismatches.
• Incorrect drive configuration (e.g., P0100, P0101) conflicting with the safety hardware capabilities or diagnostics.

Click steps to track your progress.

1. 1

   1. Power cycle the drive; some transient internal communication errors can be resolved by a fresh restart.

2. 2

   2. Update the drive's firmware to the latest version, specifically checking for updates related to safety functions and internal communication integrity.

3. 3

   3. Perform a safety acknowledgement (P0010=0, P0970=1), then re-commission the safety functions (P0010=95) from scratch using STARTER/TIA Portal.

4. 4

   4. Check the drive's diagnostic buffer (r0947, r2122) for more specific fault sub-numbers that might indicate the failing internal component.

5. 5

   5. If applicable, review the wiring and settings of external safety components connected to the drive to rule out external influences.

6. 6

   6. Replace the control unit (e.g., CU320-2 PN, CU250S-2 with integrated safety) if the fault persists, as it indicates a severe internal hardware defect.