Rockwell Automation 20-750-ENETR PowerFlexDual-Port EtherNet/IP Option Module - Manual (Page 82)

82 Rockwell Automation Publication 750COM-UM008A-EN-P - July 2012
Chapter 4 Configuring the I/O
5. Edit the following information about the drive and option module.
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. Since the option module 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 option module 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
Selecting Master-Slave or Peer-to-Peer Hierarchy
(Adapter mode only) on page 39 or Custom Peer I/O Configuration on
page 42 ), 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—
Host [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 option
module
Device Parameter 04 - [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 13 ).
• Output Size: Start with 2 words and add 1 word for each Datalink used
to write data. For example, if 7 Datalinks—
Host [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
option module
Device Parameter 03 - [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 14 ).
Box Setting
Name A name to identify the drive and option module.
Description Optional – description of the drive/option module.
Comm Format Data - DINT (This setting formats the data in 32-bit words.)
IP Address The IP address of the option module.
Open Module
Properties When this box is checked, clicking OK opens additional module properties dialog boxes
to further configure the drive/option module. When unchecked, clicking OK closes the
drive’s New Module dialog box. For this example, check this box.
Box Assembly
Instance Size
Input 1 (This value is
required.) The value will vary based on the number of Host [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 Host [DL To Net xx]
parameters used for your application (see details below).
Configuration 6 (This value is
required.) 0 (This value is required.)