What it means
F01222 is raised by the Control Unit (CU) when the computing time for communication is not available: the drive has no time slice defined that fulfills the requirements, the alternating cyclic clock cycle therefore cannot be maintained, and the port cannot be operated correctly. The G130/G150 and S120/S150 list manuals describe this fault identically, and both mark it Only for internal Siemens troubleshooting
.
Why it appears
- No time slice that fulfills the requirements has been defined.
- The alternating cyclic clock cycle cannot be maintained, so the port cannot be operated correctly.
What to check
- Read the fault value in r0949 and note it in hexadecimal — it contains the Method ID.
- Contact Technical Support and quote the fault value. The manuals print no user-side configuration change or other remedy for this fault.
Reading the message value
- The drive writes the fault value to r0949; the manual says to interpret it hexadecimal.
- The value is the Method ID. The manuals do not decode it bit by bit for this fault.
Parameters the manual names
- r0949 — fault value: read the Method ID for F01222 here, interpreting the value hexadecimal.
Acknowledging and restarting
The manuals specify immediate acknowledgement and describe no special reset or restart procedure for this fault. Because it is marked for internal Siemens troubleshooting, the printed remedy is simply to contact Technical Support; no user-side correction is described.
What differs between the drive families
Straight from the manuals' own fields — F01222 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2582 |
| G130, G150 | NONE | IMMEDIATELY | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS G130, G150 List Manual · p. 1394 |
The drives this code lives on
F01222 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F01222 mean on a SINAMICS CU?
It means the computing time for communication is not available: no time slice fulfilling the requirements was defined, so the alternating cyclic clock cycle cannot be maintained and the port cannot be operated correctly.
How do I clear fault F01222?
The fault is acknowledged immediately, and the manuals describe no special reset procedure. Since it is flagged for internal Siemens troubleshooting, the only remedy printed is to contact Technical Support.
What is the fault value of F01222 in r0949?
It contains the Method ID and must be interpreted hexadecimal. Note it down and quote it when you contact Technical Support.
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the F01xxx group · SINAMICS manuals · Siemens manuals