Siemens 6ES7151-1BA02-0AB0 - Page 58

Interrupt, error, and system messages
4.3 Diagnostics with STEP 7
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
58 Manual, 03/2008, A5E01075975-02
Diagnostic interrupt from the modules, bytes x+12 to x+15
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Figure 4-9 Structure of bytes x+12 to x+15 for the diagnostics frame