ABB RCNA-01, User Manual

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Communication
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Vendor Specific Object, Class 0x90
Services Supported
Instance 0x00, Attributes
The Vendor Specific Object, Class 0x90, enables access of drive
parameter and data sets.
To access drive parameters Instance and Attribute correspond to
the drive parameter Group and Index in the following way.
• Instance = parameter Group (1...99)
• Attribute = parameter Group (1...99)
For example, Parameter 99.01 is accessed as follows:
• Class = 144 = 0x90
• Instance = 99 = 0x63
• Attribute = 1 = 0x01
To access data sets Instance is always 100. Attribute corresponds
to a specific data word.
For example, data set 2 word 1 is accessed as follows
• Class = 144 = 0x90
• Instance = 100 = 0x64
• Attribute = 4 = 0x04
Service Code No. Service Name
0x0E Get Attribute Single
0x10 Set Attribute Single
ID# Attribute
name Services Description Data
type
0x02 Max instance Get Maximum number of instances
in this Class UINT16