Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 462)

Programming Feedrates
Chapter 18
18-14
There are three types of axis acceleration/deceleration available:
Exponential Acc/Dec
Uniform or Linear Acc/Dec
S--Curve Acc/Dec
These are used to produce smooth starting and stopping of the machine’s
axes and prevent damage to the machine resulting from harsh movements.
Your system installer determines the acc/dec parameter type (exponential
or linear) for some manual motion types. To determine which motion
types are configurable, refer to the following table. Refer to your system
installer’s documentation for more information about how your system is
configured.
Refer to the table below to determine the type of acceleration/deceleration
performed for manual motion and programmed moves.
Table 18.A
Acc/Dec Type Performed with Manual Motion and Programmed Moves
Motion Type Always Uses Exponential
Acc/Dec
Configurable in AMP by
System Installer via
Manual Acc/Dec Mode
Always Uses Linear
Acc/Dec
Linear or S- Curve
Acc/Dec per G- code
Hand--pulse generator n
Arbitrary angle moves (i.e.,
hand--pulse generator and
continuous and incremental
motion) n
Homing n
All programmed moves except
for G00 and exact stop n
Manual continuous motion n
Manual incremental motion n
PAL axis mover n
All moves programmed in G00
(positioning) mode n
18.4
Automatic
Acceleration/Deceleration
(Acc/Dec)