Siemens CPU 31 Series Technical Data Manual page 32

Operating and display elements
2.2 Operating and display elements: CPU 31x
Reference
• CPU operating modes:
• Information on CPU memory reset:
• Evaluation of the LEDs upon error or diagnostic event:
2-14
Commissioning, Commissioning Modules, CPU Memory Reset by means of Mode
Selector Switch
and
CPU 31x, Test Functions, Diagnostics and Troubleshooting, Diagnostics with the help of
Status and Error LEDs
STEP 7 Online Help.
Operating instructions CPU 31xC and CPU31x,
Operating Instructions CPU 31xC
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06