Rockwell Automation 2098-IPD-020-DN Ultra5000 Series Intelligent Positioning Drives with DeviceNet Reference Manual - Manual (Page 77)

Publication 2098-RM002A-EN-P – October 2001
Programming Reference 4-53
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, WORD, or DWORD the
enumerated string is a bit enumerated string. If the data type is INT,
USINT, or UINT the enumerated string is a value enumerated string.
Any other data type does not have enumerated strings.
The table below describes the Get_Enum_String request service
attribute.
• 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 describing 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
with a maximum number of characters of 16.
Parameter Object Specific Services
Service
Code
Service
Name
Service
Description
4B
H
Get_Enum_String Use this service to read enumerated strings from
the Parameter Instance. See DeviceNet
Specification Vol 2: Object Library, Parameter
Object referenced on page P-3.
Name Data Type Description of Attribute
Enumerated String Number USINT Number of enumerated string to retrieve
(MAX value is 255).