Instance attributes, Services, Instance attributes services – Rockwell Automation 1440-SPD02-01RB XM-220 Dual Speed Module User Manual

Page 104

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Publication GMSI10-UM004B-EN-P - May 2010

96 DeviceNet Objects

Instance Attributes

Services

1

Attributes can only be set while the device is in Program Mode. See the description of the Device Mode Object
for more information.

Table C.24 Parameter Object Instance Attributes

Attr ID

Access
Rule

Name Data

Type

Description

Semantics

1

Set

Parameter
Value

Actual value of parameter See Table C.23 for a list of valid

values for each instance.

2

Get

Link Path Size

USINT

Size of Link Path

0 (These Parameter instances do
not link directly to another
object attribute.)

3

Get

Link Path

ARRAY of
DeviceNet
path

DeviceNet path to the
object for the Parameter
value.

Segment
Type/Port

BYTE

See DeviceNet
Specification Volume 1
Appendix I for format.

Segment
Address

See DeviceNet
Specification Volume 1
Appendix I for format.

4

Get

Descriptor

WORD

Description of Parameter

Bit 0 Settable Path support
Bit 1 Enum Strings support
Bit 2 Scaling support
Bit 3 Scaling Links support
Bit 4 Read only
Bit 5 Monitor
Bit 6 Ext. Prec. scaling

5

Get

Data Type

EPATH

Data Type Code

See DeviceNet Specification
Volume 1 Appendix J.

6

Get

Data Size

USINT

Number of Bytes in
Parameter value.

Table C.25 Parameter Object Services

Service
Code

Class/Instance Usage

Name

Description

0E

h

Class/Instance

Get_Attribute_Single

Returns the contents of the
specified attribute.

10

h

Class

Set_Attribute_Single

Sets the contents of the
specified attribute.

1

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