Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Manual do Utilizador descarregar pdf (Página 141)

Rockwell Automation Publication 20COMM-UM015B-EN-P - July 2013 141

Using Explicit Messaging Chapter 6

MicroLogix 1100/1400 Controller Example Scattered Write Response Data

In this message example, we use the data table addresses in Figure 76 to store the

response values that were written to the requested drive parameters. Values of ‘0’

indicate no errors occurred.

Figure 76 - Example Scattered Write Response Data File for PowerFlex 7-Class

Drive

The results of the explicit message appear in the destination tag array N80 (Figure

76). Values of ‘0’ indicate no errors occurred.

MicroLogix 1100/1400 Controller – Explanation of Request and Response

Data for Read/Write Multiple Messaging

The data structures in Figure 77 and Figure 78 use 16-bit words and can

accommodate up to 22 parameters in a single message. In the Response Message, a

parameter number with the high bit set indicates that the associated parameter

value field contains an error code (parameter number in response data will be

negative).

Important:See Table 17 on page 106

for limitations of PowerFlex 7-Class

drives when using Class code 0x93 for explicit messaging.

Figure 77 - Data Structures for Scattered Read Messages

Request (Source Data) Response (Destination Data)

Word 0 Parameter Number Word 0 Parameter Number

1 Pad Word 1 Parameter Value LSW

2 Pad Word 2 Parameter Value MSW

3 Parameter Number 3 Parameter Number

4 Pad Word 4 Parameter Value LSW

5 Pad Word 5 Parameter Value MSW

6 Parameter Number 6 Parameter Number

7 Pad Word 7 Parameter Value LSW

8 Pad Word 8 Parameter Value MSW

9 Parameter Number 9 Parameter Number

10 Pad Word 10 Parameter Value LSW

11 Pad Word 11 Parameter Value MSW

12 Parameter Number 12 Parameter Number

13 Pad Word 13 Parameter Value LSW

14 Pad Word 14 Parameter Value MSW

...

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 237 238

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Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Manual do Utilizador Página 141