Rockwell Automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Communication Adapter User Manual - Manual (Page 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
... ...