Rockwell-automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter Uživatelský manuál stáhnout pdf (Strana 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

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

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 165 166

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Rockwell-automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter Uživatelský manuál Strana 79