Rockwell Automation 1336-GM6 Enhanced DeviceNet Communications Module - Manual (Page 123)

DeviceNet Objects C-15
Object Specific Services
Enumerated strings are human-readable strings that describe either a
bit or a value depending on the data type of instance attribute 1, the
Parameter Value. If the data type is a BYTE or WORD, the
enumerated string is a bit enumerated string. If the data type is INT or
UINT, the enumerated string is a value enumerated string. Any other
data type does not have enumerated strings.
The table below lists the parameters for the Get_Enum_String request
service.
• If the string to be returned is a bit enumerated string, then the
enumerated string number represents a bit position and the
Get_Enum_String service returns a string from that bit.
• If the string to be returned is a value enumerated string, then the
enumerated string number represents a value and the
Get_Enum_String service returns a string for that value.
The enumerated string is returned in the form of a SHORT_STRING
and is 16 characters long plus the preceding length byte.
21 Decimal Precision Default = 0
Service Code
Implemented for:
Service Name
Class Instance
0x4B No Yes Get_Enum_String
Name Data Type Description of Attribute
Enumerated String
Number
USINT Number of enumerated string to retrieve
(MAX value is 255).
Class Attribute ID Attribute Name and Default Value