Test Functions - Siemens Simatic S7-1500R System Manual

Test functions

12.1 Test functions
Introduction
You have the option of testing the operation of your user program on the CPU. You monitor
the signal states and values of tags. You preassign values to tags to allow you to simulate
specific situations for program execution.
Note
Using test functions
Using test functions affects the program execution time and thus the cycle and response
times of the controller to a slight extent (a few milliseconds).
Requirements
● There is an online connection to the relevant primary or backup CPU. A simultaneous
online connection to both CPUs is not possible.
● An executable user program is available in the CPU.
● The redundant system must not be in the SYNCUP system state.
Exception: The test functions "Test with a force table" and "Trace function" are also
supported in the SYNCUP system state. However, there is no online connection during
the SYNCUP system state. You can find more information in this section.
Test options
● Testing with program status
● Testing with a watch table
● Testing with a force table
● Testing with a PLC tag table
● Testing with a data block editor
● Testing with the LED flash test
● Testing with a trace function
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S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA