Rockwell Automation 20-COMM-E PowerFlex EtherNet/IP Adapter User Manual
Page 170
6-44
Using Explicit Messaging
20-COMM-E EtherNet/IP Adapter User Manual
Publication 20COMM-UM010G-EN-P
SLC 500 Controller – Formatting a Message to Read Multiple Parameters Using
Generic Get/Set Attribute Service
Figure 6.53 Custom Scattered Read Message Configuration Screens
The following table identifies the data that is required in each box to
configure a message to read multiple parameters.
General Tab
Example Value
Description
Size in Words
Data Table Address
Service
(1)
Service Code
Class
Instance
Attribute
15
(2)
N60:0
Custom
4B (Hex.)
93 or 9F (Hex.)
(3)
0 (Dec.)
0 (Dec.)
Number of words to be transferred. Each word size is a 16-bit integer.
An unused controller data table address containing the message
instruction. This address is the starting word of the destination file.
Required for scattered messages.
Code for the requested service.
Class ID for the DPI Parameter Object.
Required for scattered messages.
Required for scattered messages.
MultiHop Tab
Example Value
Description
To Address
10.91.100.79
IP address of the adapter connected to the drive.
(1)
The default setting for Service is ‘Custom’, enabling entry of a Service Code not available from the Service pull-down menu. When
choosing a Service other than ‘Custom’ from the pull-down menu, an appropriate Hex. value is automatically assigned to the Service
Code box which is dimmed (unavailable).
(2)
In this example, we are reading five parameters. Each parameter being read requires three contiguous 16-bit words. Scattered read
messages always assume that every parameter being read is a 32-bit integer, regardless of its actual data type. The data structure
format is the same as shown on
page 6-42
. Maximum length is 66 words, which equates to 22 parameters. For parameter numbering,
DPI Parameter Object on page C-16
Host DPI Parameter Object on page C-30
(Class code 0x9F).
(3)
See
for limitations of PowerFlex 7-Class and PowerFlex 750-Series drives when using DPI Parameter Object
Class code 0x93 or Host DPI Parameter Object Class code 0x9F for explicit messaging.