# Settings for synchronous mode (synchro_data.*)

The figure below shows the basic structure of a machine with two machining units with Y, Z and C axes and a mechanically coupled X axis. If the axis group (X, Y2, Z2, C2) is to be coupled to the axis group (X, Y1, Z1, C1), please specify the coupling procedures described in the following sections.

Example of a machine structure for synchronous operation with spindles

The default coupling specifications can be defined for every axis group. It is listed in the NC working data under the coupling number '0'.

## Attention

The synchronous operation of axes is only possible for axes in an axis group.

## Notice

Synchronous mode is described in detail in [PROG].

## Additional information

- Default coupling specifications (synchro_data.koppel_gruppe[i].*)