Allen-Bradley ControlLogix Reference Manual

Chapter 4
CIP Axis Attributes
354 Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
These are the motion dynamic configuration attributes associated with a Motion
Control Axis.
Maximum Speed
Usage Access Data
Type
Default Min Max Semantics of Values
Required -
FPV
Set/
SSV
REAL FD 0 maxspd Position Units / Sec
The value of the Maximum Speed attribute is used by various motion instructions
to determine the steady-state speed of the axis. These instructions all have the
option of specifying speed as a percent of the Maximum Speed attribute value for
the axis. This value is typically set to ~90% of the maximum speed rating of the
motor. This provides sufficient 'head-room' for the axis to operate at all times
within the speed limitations of the motor.
Maximum Acceleration and Maximum Deceleration
Usage Access Attribute Name Data
Type
Default Min Max Semantics of
Values
Required -
FPV
Set/
SSV
Maximum
Acceleration
REAL FD 0 maxacc Position Units / Sec
2
Required -
FPV
Set/
SSV
Maximum
Deceleration
REAL FD 0 maxacc Position Units / Sec
2
The Maximum Acceleration value is frequently used by motion instructions, (for
example, MAJ, MAM, and MCD) to determine the acceleration rate to apply to
the axis. These instructions all have the option of specifying acceleration as a
percent of the Maximum Acceleration for the axis. This value is typically set to
~85% of the maximum acceleration rate of the axis. This provides sufficient
'head-room' for the axis to operate at all times within the acceleration limits of the
drive and motor.
The Maximum Deceleration attribute value is frequently used by motion
instructions, (for example, MAJ, MAM, and MCD), to determine the
deceleration rates to apply to the axis. These instructions all have the option of
specifying deceleration as a percent of the Maximum Deceleration for the axis.
This value is typically set to ~85% of the maximum deceleration rate of the axis.
This provides sufficient 'head-room' for the axis to operate at all times within the
deceleration limits of the drive and motor.
Motion Dynamic Configuration
Attributes

Allen-Bradley ControlLogix Specifications

General

Brand	Allen-Bradley
Model	ControlLogix
Category	Industrial Electrical
Language	English