Siemens SIMATIC S7-1500 Function Manual page 398

Glossary
Following error
The following error is the difference between the position setpoint and the actual position
value. The transmission times of the setpoint to the drive, and of the actual position value to
the controller, are taken into account in the calculation of the following error.
GSD file
As a Generic Station Description, this file contains all properties of a PROFINET or
PROFIBUS device that are necessary for its configuration.
Hardware limit switch
Mechanical limit position switch that limits the maximum permissible traversing range of the
axis.
Homing
With homing, you create the relationship between the position in the technology object and
the mechanical position of the axis. The position value in the technology object is assigned
to a homing mark at the same time. This homing mark represents a known mechanical
position.
Incremental encoder
Position encoder which outputs the position change incrementally in the form of a digital
numerical value.
Kv factor
Velocity gain
Gain factor in position control loop
Master value
Input variable for synchronous operation
Motion Control instruction
Use the Motion Control instructions to start Motion Control jobs at technology objects in your
user program and thus execute the desired functionality at the technology objects. You track
the status of running jobs with the output parameters of the Motion Control instructions.
Override
Percentage correction of the velocity/speed
398
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC