Description of the various operating modes

Selection

Single step and its operating modes can be set at any time via operator action or the PLC.

The following operating modes are available:

Step into

The "Step into" single step mode is active as the default. This means that program execution is interrupted again when subroutines are invoked at the first block in the subroutine.

Therefore, single step acts on every programmed NC line that is processed during execution of the program.

Step over

The "Step over" mode can be set if the NC lines contained in a subroutine are not to be run as single steps. This means that any subroutine call existing in the next step does not lead to stopping.

Program execution is continued without stopping until the subroutine is terminated again.

This characteristic also applies to nested subroutines.

Return from function

All subsequent instructions do not lead to stopping. Only the return from the current program level once again leads to stopping of the NC program.

If the current interrupt point is already at the top level, i.e. the main program, this mode acts like "Step into".