This page contains all the information you need about our debugger CLI tools. We recommend that beginners use these features in the SIMATIC AX Code IDE. To learn how to do this, refer to the PLC Debug Extension.
Continue on this page if you want to learn more about the CLIs and the additional functionality they provide.
WARNING
All online-related functionalities (such as mon/mod/sdb) can prolong the cycle time and/or communication time of a PLC and therefore may cause serious damage to property or injury to persons if malfunctions or program errors occur.
Be aware that using online-related functionalities may cause the PLC to switch to the STOP state.
Make sure that no dangerous situations can arise before you use these functionalities.
After updating to a new version, recompile and download your project before using debugging tools (mon/mod/sdb).
WARNING
We are aware of an issue that affects time of execution for monitor and modify. This issue can lead to values not being monitored or modified at the correct point of the cycle.
This issue will be resolved in the upcoming release of both tools.
Refer to Monitor - time of execution and Modify - time of execution for more information.
Note
Note that each time an online connection is initialized or a software or hardware download is performed, the initialization of Monitor, Modify, and Debug jobs is automatically canceled.
Be aware that Monitor, Modify and Debugger jobs can be aborted by the PLC if cycle time increases are detected on the PLC.
You can create your own tools around our CLIs or just run them from the terminal if you are more of a text-based user.
Our tools all have different use cases and can be used in different situations: