System block does not exist

Siemens PLC & VFD Error plc

Model: S7-1200/1500 | Code: 253F (0x9F7)

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

Symptoms

Referenced system block (SFB/SFC) does not exist.

Possible Causes

System block not available on this CPU.

Troubleshooting Steps

Check CPU supports the system block.

How to Reset

Fix reference and restart

Related Siemens Fault Codes

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Source: Siemens GetErrorID documentation

Category: PLC & VFD