Access error: wrong DB used (IFB)

Siemens PLC & VFD Error plc

Model: S7-1200/1500 | Code: 2551 (0x9FB)

Applicable Systems
S7-1200 S7-1500 S7-300 S7-400 LOGO! SINAMICS

Symptoms

Wrong DB accessed via interface block.

Possible Causes

Interface block DB version mismatch.

Troubleshooting Steps

Correct interface block DB reference.

How to Reset

Fix IFB and restart

Related Siemens Fault Codes

Source: Siemens GetErrorID documentation

Category: PLC & VFD