Rockwell Automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapter User Manual
Page 75
Rockwell Automation Publication 750COM-UM001E-EN-P - October 2013
75
Configuring the I/O
Chapter 4
6.
Under Connection Parameters, edit the following information.
Enter the number of 32-bit words that are required for your I/O in the
Input Size and Output Size boxes. Because the adapter always uses the 32-
bit Logic Status, 32-bit Feedback, and a 32-bit word dedicated for memory
allocation of the Generic Ethernet module profile, at least three 32-bit
words must be set for the Input Size. The adapter also uses the 32-bit Logic
Command and 32-bit Reference, requiring at least two 32-bit words for
the Output Size. If any or all of the drive’s sixteen 32-bit Datalinks are used
(see
Setting a Master-Slave Hierarchy on page 32
), the Input and Output Size settings must be
increased accordingly.
• Input Size:
Start with 3 words and add 1 word for each Datalink used to
read data. For example, if 3 Datalinks—[DL To Net xx] parameters—
will be used to read drive or peripheral parameters, add 3 words to the
required 3 words for a total of 6 words. You can use adapter Parameter
35 - [DLs To Net Act]
to check the total number of Datalinks being
used. Word 0 is a pad word, Word 1 is Logic Status, Word 2 is Speed
Feedback, Word 3 is DL To Net 01, and so forth (see
Figure 9
).
• Output Size:
Start with 2 words and add 1 word for each Datalink
used to write data. For example, if 7 Datalinks—[DL From Net xx]
parameters—will be used to write to drive or peripheral parameters, add
7 words to the required 2 words for a total of 9 words. You can use
adapter Parameter 34 - [DLs From Net Act] to check the total
number of Datalinks being used. Word 0 is Logic Command, Word 1 is
Speed Reference, Word 2 is DL From Net 01, and so forth (see
Figure 10
).
For the example in this manual, all 16 [DL From Net xx] and all 16 [DL
To Net xx]
are used, resulting in an Input Size of ‘19’ and an Output Size
of ‘18’.
7.
After setting the information in the drive’s New Module dialog box, click
OK.
The Module Properties dialog box appears.
Box
Assembly Instance
Size
Input
1
(This value is required.)
The value will vary based on the number of [DL From Net
xx] parameters used for your application (see details below).
Output
2
(This value is required.)
The value will vary based on the number of [DL To Net xx]
parameters used for your application (see details below).
Configuration
6
(This value is required.)
0
(This value is required.)