Import/Export revision history Appendix B
Rockwell Automation Publication 1756-RM084S-EN-P - March 2015 263
Version 2.0, major revision 2, minor revision 0, of the import/export feature
included with Logix Designer, version 9.0 includes significant changes to
motion-related tags to support the SERCOS protocol.
• CoarseUpdatePeriod and AutoTagUpdate parameters were added to the
MOTION_GROUP tag to support SERCOS. For reference, the previous
structure is described on page 263.
• Earlier versions of the import/export feature supported one AXIS tag. To
support SERCOS, the import/export feature replaced AXIS with four axis
tags: AXIS_CONSUMED, AXIS_SERVO, AXIS_SERVO_DRIVE, and
AXIS_VIRTUAL. The previous AXIS tag is incorporated into these new
tags, but no longer exists as its own tag. For reference, the AXIS structure is
described on page 264.
If you have a version 8.0 import/export file with AXIS tags that you import
into version 9.0 software, after changing the import/export version line to
2.0), the AXIS tags convert to:
If the AXIS type is: It Converts to:
Unused AXIS_SERVO
Position only AXIS_SERVO
Servo AXIS_SERVO
Consumed AXIS_CONSUMED
Virtual AXIS_VIRTUAL
MOTION_GROUP tag structure (version 1.1)
Attribute Description
Description Provide information about the tag.
Specify Description := "text"
Comment Provide information about a tag component.
Specify Comment<specifier> := "text"
Where the specifier is:
.bitnumberfor a bit in the tag
[element]for an array element of the tag
.membernamefor a structure member of the tag
GroupType Specify the type of motion group, such as Independent.
Specify GroupType := text
CoarseUpdateMultiplier Specify the coarse update rate (5-320ms).
Specify CoarseUpdateMultiplier := value
ServoUpdatePeriod Specify the servo update period in milliseconds (any positive number)
Specify ServoUpdatePeriod := value
PhaseShift Specify the phase shift (0-65,535).
Specify PhaseShift := value
Motion changes to support
the SERCOS Protocol
