Siemens SIMATIC CP 340 User Manual page 132

Diagnostics with the CP 340
Diagnostic Buffer of the CP 340
All the CP 340's errors are entered in its diagnostic buffer.
In the same way as with the diagnostic buffer of the CPU, you can also use the STEP 7
information functions on the programming device to display the user-relevant information of
the CP diagnostic buffer (see Chapter "Diagnostics by means of the diagnostic buffer of the
CP 340 (Page 144)").
132
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03