# Weighting of external feedrate (# FF)

The NC channel includes the option of commanding an external path feed via the PLC [HLI// Control commands of a channel]. This can be additionally weighted in the NC program by the feed factor #FF.

The effect of #FF is controlled by setting the parameter P-CHAN-00422.

Syntax:
#FF = <feed_factor>

<feed_factor> | Weighting of external feed in [%]

## Notice

The feedrate factor #FF only acts on the specified external feed.
Before Build V3.01.3079.0, the feed factor #FF is limited to maximum 10000% and minimum to >0. As of this build, it is limited to maximum 1000000% and minimum to 0.1%.

The NC command is available as of CNC Build V3.01.3064.02.