Module Axis Attributes - Allen-Bradley ControlLogix Reference Manual

Chapter 5 Module Configuration Attributes

Module Axis Attributes

474
Module Configuration Attributes
Module Axis attributes are used to configure common components of a CIP
Motion device, for example the Bus Converter, Bus Regulator, and so on, that
apply to all axis instances of the device. If these Module Class attributes are
included in the CIP Motion Control Axis Object implementation, the attribute
values are the same for all axis instances associated with the device. This is
generally enforced by configuration software.
If the value for a given Module Configuration attribute is not the same for each
axis instance of the device, the Module Configuration attribute value for instance
1 determines the configuration of the device component.
Device Power Structure Axis ID
Usage Access
Optional - D Set
The element values of this array represent an ID assigned by the drive vendor that
identifies the power structure associated to a given axis instance. This allows
different power structures to be applied to specific axis instances of a multi-axis
drive. By contrast, if power structure hardware is the same for all axis instances of
the drive (excluding master feedback axes) the power structure can be identified by
simply using the Drive Power Structure Class ID attribute. For multi-axis drives,
the Drive Power Structure Axis ID can be included as part of the data segment in
the CIP Motion connection's Forward Open service to confirm that the power
structure for a given axis instance matches the configuration in the controller. The
indexed elements of this array correspond to axis instances 1 thru 8. Individual
elements of this attribute are only applicable to axis instances whose associated
Inverter Support bit is set. Array elements that are not applicable are set to 0. Axis
instances with power structures that are not configured are set to 0, indicating to
the drive that the Drive Power Structure Axis ID for these axis instances do not
need to be checked.
Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
on page 471
T Data Type Default Min
DINT[8] [] = 0 -
Max Semantics of Values
- Array of power structure IDs used
to verify if the user selected
power structure for each axis
instance of a multi-axis drive
matches that of the drive's actual
power structure.
[ Axis 1 ID,
Axis 2 ID,
Axis 3 ID,
Axis 4 ID,
Axis 5 ID,
Axis 6 ID,
Axis 7 ID,
Axis 8 ID ]