Rockwell Automation 2100-GK61 DeviceNet to SCANport - Manual (Page 165)

Publication 2100-UM001B-EN-P – January 2001
DeviceNet Objects C-11
Instance Attributes
Attribute ID
Access
Rule
Stub/Full Name Data Type Description
1 ➀ Stub Parameter Value Specified in
Descriptor,
Data Type,
and Data
Size
attributes.
Actual value of parameter. Data type
specified in descriptor, data type, and
data size.
➀➁
2 Get Stub Link Path Size USINT Size of Link Path attribute. If this
attribute is 0, then no link is specified.
Number of BYTEs in attribute 3.
3 Get Stub Link Path ARRAY of
path seg-
ments
Path to the object from where this
parameter value is retrieved.
The link path is limited to 255 BYTEs.
Segment type/port BYTE
Segment Address Path (format
depends on
data
contained in
segment
type/port)
4 Get Stub Descriptor WORD Descriptor of parameter. Refer to the
table on page C-12.
5 Get Stub Data Type USINT Data type code. Refer to the table on
page C-13.
6 Get Stub Data Size USINT Number of BYTEs in attribute 1,
Parameter Value.
7 Get Full Parameter Name
String SHORT_
STRING
A human readable string
representing the parameter name.
For example, “frequency #1.”
The maximum number of characters
is 16. (The first byte is a length code.)
8 Get Full Units String SHORT_
STRING
Engineering unit string.
The maximum number of characters
is 4. (The first byte is a length code.)
9 Get Full SHORT_
STRING
The maximum number of characters
is 64. (The first byte is a length code.)
Always returns 0.
10 Get Full Minimum Value Same as
attribute 1
The minimum valid actual value to
which attribute 1, Parameter Value,
can be set.
11 Get Full Maximum Value Same as
attribute 1
The maximum valid actual value to
which attribute 1, Parameter Value,
can be set.
➀ The access rule is defined in bit 4 of instance attribute 4, the Descriptor. If bit 4 is 0, the access rule is Set and the Parameter Value can be read and
written. If bit 4 is 1, the access rule is Get and the Parameter Value can only be read.
➁ Data type specified in instance attributes 4 (Descriptor), 5 (Data Type), and 6 (Data Size).