Interpret the Attribute Tables
92 Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
Device Function Code Control Mode Control Method
B Bus Power Converters No Control Mode No Control Method
E Encoder, Feedback Only No Control Mode No Control Method
P Position Loop Position Control Mode Closed Loop Vector Control Method
V Velocity Loop Velocity Control Mode Closed Loop Vector Control Method
T Torque Loop Torque Control Mode Closed Loop Vector Control Method
F Frequency Control Velocity Control Mode Frequency Control Method (V/Hz or VFD)
Device Function Code Combinations
Using combinations of these letters, a specific class of CIP Motion devices can be
designated for the purposes of identifying applicable attributes. For example, 'FV'
would refer to the class of all velocity controlled drives, either vector that is
controlled or frequency that is controlled. Here are some combinations that
appear frequently:
Device Function Code Represents
Combination
Description
B BE All Device Functions using No Control Method
O F
All Device Function using Open Loop Control Methods
(Frequency Control)
C PVT
All Device Functions using Closed Loop Control
Methods (PI Vector Control Method)
D FC
All device functions using Control Methods (Control
Method !=No Control)
Conditional Implementations
There are many conditions that impact implementation of attributes. Some
examples are, encoderless or sensorless drive operation, velocity controlled drives
operating without a feedback device, and attributes that are replicated between the
controller and the device. Conditional implementation rules for attributes in these
situations are represented by the following Device Functions Codes:
Device Function Code Description
E Encoder-based device operation
!E Encoderless or Sensorless device operation
All Active Control Modes that do not use a Feedback device
C/D Controller/Device Replicated Attribute
See also
Attribute Units on page 90
CIP Data Types on page 91
To Next Page
Loading...
Need help?
General
