Technical data

Diagnostics
23.8 Flow of Diagnostic Information
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 497
System Data of the System Status List
System data are intrinsic or assigned characteristic data of a CPU. The following table shows the
topics about which information can be displayed (partial system status lists):
Topic Information
Module identification Order number, type ID, and version of the module
CPU characteristics Time system, system behavior (for example,. multicomputing) and
language description of the CPU
Memory areas Memory configuration of the module (size of the work memory).
System areas System memory of the module (for example, number of memory
bits, timers, counters, memory type).
Block types Which blocks (OB, DB, SDB, FC, FB) exist on the module, the
maximum number of blocks of one type, and the maximum size of
a block type
Assignment of interrupts and errors Assignment of interrupts/errors to OBs
Interrupt status Current status of interrupt processing/interrupts generated
Status of the priority classes Which OB is being executed, which priority class is disabled due to
the parameter setting
Operating mode and mode transition Which operating modes are possible, the last operating mode
change, the current operating mode
Diagnostic Status Data in the CPU
Diagnostic status data describe the current status of the components monitored by the system
diagnostics. The following table shows the topics about which information can be displayed (partial
system status lists):
Topic Information
Communication status data All the communication functions currently set in the system
Diagnostic modules The modules with diagnostics capability logged on at the CPU
Start information list of the OB Start information about the OBs of the CPU
Start event list Start events and priority classes of the OBs
Module status information Status information about all assigned modules that are plugged in, faulty,
or generate hardware interrupts