What it means
A01970 is raised when the cyclic connection between the CBExx and the PROFINET controller is interrupted. For checking the state of this connection, the manual refers to r8956 (CBExx cyclic connection state).
Why it appears
- The cyclic connection between the CBExx and the PROFINET controller is down.
What to check
- Check the CBExx cyclic connection state in r8956.
- Establish the PROFINET connection to the controller.
- Activate the PROFINET controller in cyclic mode.
- Re-check r8956 to confirm that the cyclic connection is established again.
Parameters the manual names
- r8956 — CBExx cyclic connection state: read here whether the cyclic connection to the PROFINET controller is up or interrupted, and confirm that it is back after the remedy.
Acknowledging and restarting
This alarm requires no acknowledgement. It goes away once the PROFINET connection is established and the PROFINET controller is active in cyclic mode again.
The same on every family
Every manual that describes A01970 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS S120, S150 List Manual · p. 2721 |
The drives this code lives on
A01970 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does SINAMICS alarm A01970 mean?
It reports that the cyclic connection between the CBExx and the PROFINET controller is interrupted.
How do I clear alarm A01970 on a SINAMICS S120 or S150?
Establish the PROFINET connection and activate the PROFINET controller in cyclic mode. No acknowledgement is required; the alarm goes away once the connection is back.
Which parameter shows the cyclic connection state for A01970?
r8956 (CBExx cyclic connection state). It shows whether the cyclic connection to the PROFINET controller is established.
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 A01xxx group · SINAMICS manuals · Siemens manuals