Using logic command/status, Using reference/feedback – Rockwell Automation 25-COMM-E2P PowerFlex 25-COMM-E2P Dual-Port EtherNet/IP Adapter User Manual
Page 65
Rockwell Automation Publication 520COM-UM003A-EN-E - June 2013
65
Using the I/O
Chapter 5
Using Logic Command/Status
The
Logic Command is a 16-bit word of control data produced by the controller
and consumed by the adapter. The
Logic Status is a 16-bit word of status data
produced by the adapter and consumed by the controller.
When using a ControlLogix or CompactLogix controller, the Logic Command
word is always INT 0 in the output image and the Logic Status word is always:
•
INT 0 in the input image when using the drive Add-On Profile.
•
INT 2 when using the Generic Profile.
This manual contains the bit definitions for compatible products available at the
time of publication in
Logic Command/Status Words: PowerFlex 525 Drives on
Using Reference/Feedback
The
Reference is a 16-bit word that is produced by the controller and consumed
by the adapter. The
Feedback is a 16-bit word produced by the adapter and
consumed by the controller.
When using a ControlLogix or CompactLogix controller, the Reference is always
INT 1 in the output image (see
I/O Image for PowerFlex 525 Drives on page 64
and the 16-bit Feedback is always:
•
INT 1 in the input image when using the drive Add-On Profile.
•
INT 3 when using the Generic Profile.
The Reference and Feedback are 16-bit INT values represent drive speed. The
scaling for the speed Reference and Feedback is 0.01 Hz. For example, a 16-bit
INT Reference value of ‘3000’ would equal a Reference of 30.00 Hz. Note that
the commanded maximum speed can never exceed the value of
Host parameter
P044 [Maximum Freq]
.
PowerFlex 525 Drive Example Speed Reference/
shows example References and their results for a
PowerFlex 525 drive that has its:
•
Host parameter P043 [Minimum Freq] set to 10.00 Hz.
•
Host parameter P044 [Maximum Freq] set to 50.00 Hz.
PowerFlex 525 Drive Example Speed Reference/Feedback Scaling
Network Reference Value
Speed Commanded Value
Output Speed
Network Feedback Value
10000
100.00 Hz
50.00 Hz
(1)
(1) The drive runs at 50.00 Hz instead of 100.00 Hz or 65.00 Hz because Host parameter P044 [Maximum Freq] sets 50.00 Hz as the
maximum speed.
5000
6500
65.00 Hz
50.00 Hz
(1)
5000
3250
32.50 Hz
32.50 Hz
3250
0
0.00 Hz
0.00 Hz
0