7.3.3.2 Get Attribute Single
To get an attribute, use the service code 0x0E (get
attribute single). For details on returned status codes, see
chapter 7.3.3.3 Status Codes for Acyclic Services.
Illustration 7.3 shows the successful reading of parameter
1-09 Excess Start Time (Class 100, Instance 109).
NOTICE
Class and service codes are written in hexadecimal
values, while instance is in decimal values.
Illustration 7.3 Example: Retrieving the Value of Class 0x64,
Instance 109 - Successful
Reading a parameter that does not exist results in an error.
Illustration 7.4 shows the example of an attempt to read a
non-existing parameter (Class 101, Instance 113).
Illustration 7.4 Example: Retrieving the Value of Class 0x65,
Instance 113 - Error
Packet Structures EtherNet/IP Module
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