User Manual
Chapter 8
GFK-1742F
Jan 2020
Follower Motion
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Note that follower motion is summed with Jog, Move at Velocity, or Motion Programs. If a
slave axis is following a master input at velocity V1, and a Jog is commanded at velocity V2,
the axis will move at velocity V1 + V2.
8.2
External Master Inputs
Actual Position for Axis 1 - Axis 4 represent external master axis sources. An encoder
connected to the axis or the feedback of a servo system may be used as an actual position
source. The DSM314 follower loop allows a slave axis to follow a selected external source as
shown in this example:
8.2.1
Example 1: Following Axis 3 Actual Position Master Input
In this example, a graph of velocity (v) versus time (t) shows the velocities of the master
input (Actual Position 3), and the slave axis that is following the master. The DSM314 is
configured with Follower Master Source 1 = Actual Position 3 and the Select Master Source
%Q bit is OFF. The A:B ratio is 1:1. The velocity profile of the following (slave) axis is identical
to the master input.
Figure 95: Following Encoder 3 Master Input
8.3
Internal Master Axis Command Generators
Commanded Position for Axis 1 - Axis 4 represent internal master axis sources. The DSM314
follower loop will allow a slave axis to follow a selected internal command source as shown
in this example: