Siemens SIMATIC S7-1500 Automation System System Manual page 132

Test functions and fault resolution
10.1 Test functions
Testing with the trace and logic analyzer function
The trace function is used to record the CPU tags, depending on the settable trigger
conditions. Tags are, for example, drive parameters or system and user tags of a CPU. The
recorded data are saved on the CPU and, when required, can be displayed and read out
with STEP 7.
The trace function can be called from the CPU's folder in the project tree, under the name
"Traces".
Simulation
With STEP 7 you can run and test the hardware and software of the project in a simulated
environment. Start the simulation using the menu command "Online" > "Simulation" > "Start".
Reference
Further information on the test functions can be found in the STEP 7 online help.
Further information about testing with trace and logic analyzer functions is available in the
Function Manual Using the trace and logic analyzer function
(http://support.automation.siemens.com/WW/view/en/64897128).
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S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01