Notes

M functions during “forward/backward motion on the path”

By default the synchronisations of M functions are suppressed for backward motion on the path. However, if required, synchronisation can be enabled by specific bits.

When these bits are used, all synchronised M functions are treated as synchronisation type MVS_SVS (application before block, synchronisation before block) during backward motion. In “simulated forward motion” mode the synchronisation type is used as specified in the channel parameters.

Memory use for backward motion

The save function for function blocks in the backward motion memory can only be selected/deselected if no NC program is executed and no backward motion is active.

If at program end the memory is deselected and then reselected, the memory is cleared. This ensures that no subsequent backward motion can move back further than this point.

NC reset

In addition the backward motion memory is cleared at every NC reset.