Chapter 3
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