Rockwell Automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter - Manual (Page 79)

Rockwell Automation Publication 520COM-UM001B-EN-E - March 2013 79
Using Explicit Messaging Chapter 6
CompactLogix Example Scattered Write Request Data
In this message example, we use the source tag (Scattered_Write_Request) to
write new values to these 16-bit parameters:
Example Scattered Write Request Converted Data on page 79 shows the
parameter values.
Example Scattered Write Request Converted Data
CompactLogix Example Scattered Write Response Data
The results of the message appear in the destination tag named
Scattered_Write_Response (
Example Scattered Write Response Data on
page 79 ). Values of “0” indicate no errors occurred.
Example Scattered Write Response Data
CompactLogix – Explanation of Request and Response Data for Read/
Write Multiple Messaging
The data structures in Data Structures for Scattered Read Messages on page 80
and Data Structures for Scattered Write Messages on page 81 use 16-bit words
and can accommodate up to 64 parameters in a single message. In the Response
Message, a parameter number with Bit 15 set indicates that the associated
parameter value field contains an error code (parameter number in response data
will be negative).
(6) The controller tag for “Scattered_Write_Response” must be the same size as the controller tag for “Scattered_Write_Request” (for
this example, 20 bytes). An array of INTs is suggested to be able to read any error codes that are returned.
PowerFlex 525 Drive Parameters Write Value
A442 [Accel Time 2] 11.10 Sec
A443 [Decel time 2] 22.20 Sec
A415 [Preset Freq 5] 33.30 Hz
A416 [Preset Freq 6] 44.40 Hz
A417 [Preset Freq 7] 55.50 Hz