Diagnostic Buffer - Siemens SINAMICS S120 Commissioning Manual

Display parameters
● r0772[0...2] Measuring sockets output signal
● r0774[0...2] Measuring sockets output voltage
● r0786[0...2] Measuring sockets normalization per volt
3.3

Diagnostic buffer

Description
A diagnostic buffer mechanism has already been implemented in the SIMATIC S7
environment. It can record important operational events in the automation system as a kind
of log book (restriction: The availability of the diagnostics buffer mechanism is also
dependent on the hardware release of the Control Unit).
The diagnostic buffer is in the non-volatile memory, so data written to it can be read out for
subsequent analysis of a malfunction (including pre-history).
The essential events recorded in the buffer are:
● Faults
● Important changes to the boot status (end status) and partial booting of DOs
● Commissioning procedures
● State change of PROFIBUS/PROFINET communication
● Exceptions
The entries in the diagnostic buffer can be called up via the drive unit properties (symbol in
project navigator --> right mouse-click) under the menu option "Target device" > "Device
diagnostics".
Note
STEP7 Full version
The STARTER device diagnostics function is displayed only when you have installed the full
version of STEP7.
Commissioning Manual
Commissioning Manual, (IH1), 01/2012, 6SL3097-4AF00-0BP2
Diagnostics
3.3 Diagnostic buffer
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