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Parameter object (classid0fh), Parameter object (class id 0f – Rockwell Automation 2098-DSD-xxx Ultra3000 Digital Servo Drives with DeviceNet User Manual

Page 62

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Publication 2098-RM004A-EN-P – August 2002

2-46

Programming Reference

Parameter Object
(Class ID 0F

H

)

The DeviceNet Parameter Object provides the interface to the
Ultra3000 Drive with DeviceNet configuration data. It supplies a full
description of the parameter, including its minimum and maximum
values and a readable text string describing the parameter. The
instances start at one and increment with no gaps.

The table Parameter Instance on page 2-47 lists the parameter
instances implemented in the Ultra3000 Drive with DeviceNet. The
table Parameter Object Instance Attributes on page 2-97 lists the
instance attributes of the parameter object. A parameter value is
accessed via Attribute 1 of a parameter instance. Additional
information about the parameter object is located beginning on
Page 2-99.

DeviceNet Connection Object,
Common Services

Service Code

Service Name

Service Description

0E

H

Get_Attribute_Single

Returns the contents of the specified attribute.

10

H

Set_Attribute_Single

Modifies the specified attribute.

05

H

Reset

Used to reset the Inactivity/Watchdog Timer associated with a Connection Object

Parameter Object,
Attributes for Instance ID = 0 (Class Attributes)

Attr ID

Access
Rule

Name

Data
Type

Description

Semantics of Values

1

Get

Revision

UINT

Revision of this object

Current value = 01

2

Max Instances

Maximum instance number of an
object currently created in this class
level of the device

The largest instance number of a created
object at this class hierarchy level

8

Parameter Class
Descriptor

WORD

Bit field that describe parameters

Bit 0 = supports parameter instances
Bit 1 = full attributes
Bit 2 = nonvolatile storage save command
Bit 3 = params are stored in nonvolatile
storage

9

Configuration
Assembly
Instance

UINT

Instance number of the configuration
assembly

0 = configuration assembly not supported

IMPORTANT

Some parameters cannot be modified while the
Ultra3000 Drive with DeviceNet is enabled. The drive
returns the error code, 10

h

- Device State Conflict, if

you attempt to modify one of these parameters while
the drive is enabled.