FCB 26 Stop at user limits
FCB 26 is used for stops at user limits. The user limits are either available as local setpoints or initiate the deceleration ramp set via the fieldbus.
You can choose between a speed-controlled ramp and a position-controlled ramp. Unlike the other stop FCBs (FCB 13/FCB 14), FCB 26 has a very low priority.
This allows you to select FCB 26 as default (e.g. bit in the control word that selects this FCB is always TRUE). This means that FCB 26 is always active when all other FCBs are deselected. This makes it possible to always stop in a position-controlled manner.
In position-controlled mode, FCB 26 has lag error monitoring.
When the stop is reached, the brake remains released and the motor remains energized.