Commandable operating modes

Selection

The single step and its operating modes can be set at any time via Operation (HMI) or the PLC via the "Single-Step Mode” CNC object.

Depending on the channel parameter P-CHAN-00015, the selected operating mode of the single step affects the corresponding NC lines. The following operation modes are available:

0 : Step into

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

1 : Step over

The "Step over" mode can be set if the NC lines contained in a subroutine are not to be executed in single steps. This means that any subroutine invocation which may exist in the next step does not result in a stop.

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

This characteristic also applies to nested subroutines.

2 : Return from function

All subsequent instructions do not result in a stop. Only a return from the current program level again results in a stop of the NC program.

If the current interrupt point is already at the topmost level, i.e. the main program, this mode acts in the same way as "Step into".

3 : Step to next movement

Single-step mode only affects NC blocks with axis movements. All other NC lines do not result in a stop.