Siemens S5-115U Error STUEB: Block stack overflow: The maximum block call nesting depth of 16 (or 32 in the case of CPU 944) has been exceeded.

Siemens S5-115U Programmable Controller · taken from the manufacturer’s manual, pages cited

Error codeSTUEB

Block stack overflow because maximum nesting depth of 16 (or 32 for CPU 944) has been exceeded. The manual's first action is: “Correct the program error.”

Model
Siemens S5-115U
Display shows
STUEB
Type
Error code
Source
Manual p. 139

What STUEB means

Block stack overflow: The maximum block call nesting depth of 16 (or 32 in the case of CPU 944) has been exceeded. p. 139

Common causes

  • Block stack overflow: - The maximum block call nesting depth of 32 has been exceeded. - Interrupt-driven or time-driven program interrupts cyclic program during processing of an integrated function block and an integrated function block is also called in the interrupting program. p. 139
  • Block stack overflow: The maximum block call nesting depth of 16 (or 32 in the case of CPU 944) has been exceeded. p. 139

What to do

  1. Correct the program error. p. 139

Before you service the product, read the safety instructions in the manual p. 414.

If STUEB 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 139 All S5-115U error codes Manual details & download

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