Siemens SIMATIC ET 200pro Operating Instructions Manual page 108

Note
Restrictions when testing with breakpoints
• If you test with breakpoints, it is possible that the cycle time of the CPU is exceeded.
• If you are using technology objects and test them with breakpoints, the CPU switches to
STOP mode.
Note
F-System SIMATIC Safety
Setting breakpoints in the standard user program results in errors in the
safety program:
• Expiration of the fail-safe cycle time monitoring
• Error in communication with the fail-safe I/O devices
• Errors during safety-related CPU-CPU communication
• Internal CPU error
If you nevertheless want to use breakpoints for testing, you must
deactivate safety mode beforehand. This results in the following errors:
• Error in communication with the fail-safe I/O devices
• Errors during safety-related CPU-CPU communication
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC
Test and service functions
10.1 Test functions
107