Displaying Diagnostic Events In The Cpu - Siemens S7-1200 System Manual

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Displaying diagnostic events in the CPU

Use the diagnostics buffer to review the recent activity in the CPU. The diagnostics buffer is

accessible from "Online & Diagnostics" for an online CPU in the Project tree. It contains the

following entries:

● Diagnostic events

● Changes in the CPU operating mode (transitions to STOP or RUN mode)

You can also use the GET_DIAG instruction (Page 358) to collect the diagnostic information.

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

Online and diagnostic tools

14.9 Displaying diagnostic events in the CPU

The first entry contains the latest event.

Each entry in the diagnostic buffer

contains the date and time the event

was logged, and a description.

The maximum number of entries is

dependent on the CPU. A maximum of

50 entries is supported.

Only the 10 most recent events in the

diagnostic buffer are stored

permanently. Resetting the CPU to the

factory settings resets the diagnostic

buffer by deleting the entries.