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Drive configuration, Drive axis id, Axis type – Rockwell Automation 1784-PM16SE SoftLogix Motion Card Setup and Configuration Manual User Manual

Page 381

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Publication 1784-UM003A-EN-P – June 2003

Motion Object Attributes 373

Drive Configuration

The Drive Configuration attributes provide basic drive configuration
information. These parameters are used to determine the specific drive, axis
type, servo configuration, as well as determine drive polarity and fault handling
behavior.

Drive Axis ID

The Drive Axis ID attribute contains the ASA Product Code of the drive
amplifier associated with the axis. If the Product Code does not match that of
the actual drive amplifier, an error is generated during the configuration
process.

Axis Type

The Axis Type attribute is used to establish the intended use of the axis. If the
axis is intended for full servo operation than a value of “2” is required. If only
the position information from the feedback interface is of interest, than a Axis
Type should be set to “1”. Finally, if the axis is unused in the application, which
is a common occurrence when there are an odd number of axes in the system,
then the Axis Type associated with the unused axis should be set to “0”. Axis
Type is not only used to qualify many operations associated with the axis servo
loop, it also controls the behavior of the SERCOS module’s Axis Status LEDs.
An Axis Type of “1” (Position Only) results in the DRIVE LED being
blanked, while a value of “0” (Unused) blanks both the FDBK and DRIVE
LEDs.

External software (RSLogix 5000) also uses the current configured value for
Drive Axis Configuration to control the look of many of the tab dialogs
associated with the axis configuration tool.

Axis Type attribute can be set ONLY if Axis is not assigned to a group.

Attribute
ID

External
Access

GSV/SS
V
Access

Attribute Name

Data Type

Values

0x120

Set*/Get

GSV

Drive Axis ID

INT

Product Code of Drive Amplifier

GSV/SSV Access

Attribute Name

Data Type

Values

GSV

Axis Type

INT

0 = unused
1 = feedback only
2 = servo

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