What it means
F01946 reports that the connection between the drive object and at least one Publisher for PROFIBUS peer-to-peer data transfer in cyclic operation has been aborted: the Publisher concerned no longer supplies its cyclic peer-to-peer data. The manuals for G120, G120XA, G130, G150, S120 and S150 describe the code in the same way. Depending on the configuration, the same condition can also be signalled as alarm A01946; as an alarm it triggers no automatic reaction and requires no acknowledgment.
Why it appears
- The connection to at least one Publisher for PROFIBUS peer-to-peer data transfer in cyclic operation has been aborted at the affected drive object. The manual names no further cause for this code; the fault value shows which Publisher dropped out.
What to check
- Check the PROFIBUS cables.
- Determine from the fault value (r0949, interpreted binary) which Publisher aborted; r2077 holds the Publisher addresses that belong to the individual bits of the fault value.
- Check the state of the Publisher whose connection has been aborted.
Reading the message value
The drive enters the fault cause into r0949; the value must be interpreted binary. Each bit set to 1 marks one Publisher whose connection has been aborted:
- Bit 0 = 1: Publisher with address in r2077[0], connection aborted.
- … Bit 15 = 1: Publisher with address in r2077[15], connection aborted.
- The bits in between follow the same scheme: each bit number corresponds to the index of r2077 in which the address of the affected Publisher is stored.
Parameters the manual names
- r0949 — fault value: read it binary to see which Publisher's connection was aborted.
- r2077 — PROFIBUS diagnostics peer-to-peer data transfer addresses: contains the addresses of the peer-to-peer Publishers; use it together with the fault value to identify the affected Publisher.
Acknowledging and restarting
Once the cause has been removed, acknowledge the fault immediately; the manuals also permit clearing it via a POWER ON. After the fault has been acknowledged, the drive can be restarted. In its alarm form (A01946) the condition needs no acknowledgment.
What differs between the drive families
Straight from the manuals' own fields — F01946 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Infeed: OFF1 (NONE, OFF2) Servo: OFF1 (NONE, OFF2, OFF3) Vector: OFF1 (NONE, OFF2, OFF3) Hla: OFF1 (NONE, OFF2, OFF3) | IMMEDIATELY (POWER ON) | Communication error to the higher-level control system (9) | None | SINAMICS S120, S150 List Manual · p. 2719 |
| G130, G150 | Vector: OFF1 (NONE, OFF2, OFF3) Infeed: OFF1 (NONE, OFF2) | IMMEDIATELY (POWER ON) | Communication error to the higher-level control system (9) | None | SINAMICS G130, G150 List Manual · p. 1495 |
| G120 | OFF1 (NONE, OFF2, OFF3) | IMMEDIATELY (POWER ON) | Communication error to the higher-level control system (9) | — | SINAMICS G120 · p. 861 |
| G120XA | OFF1 (NONE, OFF2, OFF3) | IMMEDIATELY (POWER ON) | — | — | SINAMICS G120XA PN converter · p. 1114 |
The drives this code lives on
F01946 is described for G120, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does SINAMICS fault F01946 mean?
The connection to at least one Publisher for PROFIBUS peer-to-peer data transfer in cyclic operation has been aborted at the affected drive object.
How do I find out which Publisher aborted?
Read the fault value r0949 in binary: Bit 0 = 1 means the Publisher with the address in r2077[0] aborted, Bit 15 = 1 the one with the address in r2077[15]; the bits in between follow the same scheme.
How do I clear fault F01946?
Check the PROFIBUS cables and check the state of the Publisher whose connection has aborted, then acknowledge the fault immediately, with POWER ON as the alternative.
Can F01946 also appear as an alarm?
Yes, the manuals also list it as alarm A01946; as an alarm it triggers no automatic reaction and requires no acknowledgment.
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