Display data MeaningFeedforward control mode Indicates whether and if so, which mode of the dynamic feedforwardcontrol for the axis is active:● Inactive● VelocityThe velocity-dependent speed feedforward control is active.● TorqueThe acceleration-dependent torque feedforward control is active (incombination with the speed feedforward control)References:Extended Functions Function Manual; Compensations (K3)"Referenced" state Status display for reference point approach (axis):● Curr. MS need not be referenced(active measuring system does not require referencing)● Curr. measuring system referenced● Curr. measuring system must be referenced(active measuring system requires referencing)The display depends on the settings in the machine data:● MD34110 $MA_REFP_CYCLE_NR● MD20700 $MC_REFP_NC_START_LOCKThe display corresponds to the NC/PLC interface signal:DB31, ... DBX60.4 and 60.5 (referenced/synchronized 1 or 2)References:Function Manual Basic Functions; Reference Point Travel (R1)QEC state Indicates whether and if so, which method of the quadrant error com‐pensation (QEC) is active for the axis:● Inactive● Neural QEC learning active● Conventional QEC active● Conventional QEC w. adapt. Corr. v. active(conventional QEC with adaptation of the compensation valueactive)● Neural QEC active● Neural QEC w. adapt. Measurement duration active(neural QEC active with adaptation of the measuring time active)● Neural QEC w. adapt. Decay time corr. v. active● (neural QEC with adaptation of decay time of compensation valueactive)● Neural QEC w. adapt. Meas. dur. + decay time Corr. v. active(neural QEC active with adaptation of measuring time and decaytime of compensation value active)References:Extended Functions Function Manual; Compensations (K3)Service and diagnostics18.2 Displaying the Service overviewSINUMERIK Operate (IM9)Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1 417