Siemens CU240S Error A00703: PROFIBUS: no reference values

Siemens CU240S · taken from the manufacturer’s manual, pages cited

Fault codeA00703

PROFIBUS received no control word 1, suggesting a transmission problem on the bus. The manual's first action is: “check bus transmission”

Model
Siemens CU240S
Display shows
PROFIBUS: no reference values (A00703)
Type
Fault code
Source
Manual p. 394

What A00703 means

PROFIBUS: no reference values p. 394

Common causes

  • no or empty control word 1 received p. 394

What to do

  1. check bus transmission p. 394

If A00703 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 394 All CU240S error codes Manual details & download

This page summarises what the manufacturer’s manual says about A00703; 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.