Siemens SINAMICS S120 Function Manual page 493

Acknowledgement, traversing block activated (r2684.12)
A positive edge is used to acknowledge that in the mode "traversing blocks" a new traversing
task or setpoint was transferred (the same signal level as binector input p2631 activate
traversing task). In the mode "direct setpoint input / MDI for setting-up/positioning" a positive
edge is used to acknowledge that a new traversing task or setpoint was transferred (the
same signal level as binector input p2650 "edge setpoint transfer", if the transfer type was
selected using a signal edge (binector input p2649 "0" signal)).
Velocity limiting active (r2683.1)
If the actual setpoint velocity exceeds the maximum velocity p2571 - taking into account the
velocity override - it is limited and the control signal is set.
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Function modules
7.8 Basic positioner
491