Siemens CU240B/E-2 Error F01651: SI P1: Synchronization safety time slices unsuccessful

Control unit · taken from the manufacturer’s manual, pages cited

Fault codeF01651

The "Safety Integrated" function requires synchronization of the safety time slices between processor 1 and processor 2, but this was unsuccessful. The manual's first action is: “OFF2”

Model
Siemens CU240B/E-2
Display shows
SI P1: Synchronization safety time slices unsuccessful (F01651)
Type
Fault code
Source
Manual p. 672

What F01651 means

SI P1: Synchronization safety time slices unsuccessful p. 672

Common causes

  • The "Safety Integrated" function requires synchronization of the safety time slices between processor 1 and processor 2. This synchronization was unsuccessful. p. 672

What to do

  1. OFF2 p. 672

If F01651 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.

Open the manual at page 672 All CU240B/E-2 error codes Manual details & download

This page summarises what the manufacturer’s manual says about F01651; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.