Rockwell Automation 1203-EN1 EtherNet/IP-to-SCANport Module - Manual (Page 72)

6-8 Using Explicit Messaging
A Set Attribute Single message writes a value for a single attribute. In
this example, we write the value of a parameter in a 1305 drive.
Example Message Format
Figure 6.6 Message Format for a Set Attribute Single Message
The following table identifies key settings for the data format:
Example Set Attribute Single Message
Configuration Value Description Refer to . . .
Service Type
(1)
Service Code
(1)
Class
Instance
Attribute
Source Element
Source Length
(1)
The default setting for Service Type is “Custom,” which enables you to enter a Service
Code that is not available from the Service Type pull-down menu. When you select a
Service Type other than “Custom” from the pull-down menu, an appropriate Hex. value
is automatically assigned to the service Code box which grays out (unavailable).
Set Attribute Single
10 (Hex.)
f (Hex.)
74 (Dec.)
1 (Hex.)
ParameterWriteValue
2 bytes Write parameter data
Set Attribute Single
CIP Parameter Object
Parameter 74 - [Preset Freq 5]
Parameter Value
Controller tag for write data
One 16-bit word of data is sent C-22
C-10
C-20
C-20
C-21
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