Rockwell Automation 1440-TPS02-01RB XM-320 Position Module - Manual (Page 103)

Publication GMSI10-UM005C-EN-P - May 2010
DeviceNet Objects 95
Parameter Object
(Class ID 0F
H
)
The Parameter Object provides the interface to the XM-320 configuration
data. There are 15 Parameter Object instances implemented in the XM-320
module.
Parameter Object instances 1-4 and 6-15 are implemented to provide an
alternate method of setting the configuration parameters with EPATH or
ENGUNIT data types.
Instance 5 of the Parameter Object is for setting the device "Mode." The
Mode setting determines how the two position sensors are used:
• Normal - The two sensors are used independently to perform two
separate position measurements.
• Head-to-Head - The two sensors are used together, facing each other
on either side of the target, to perform a single position measurement.
This mode can be used to extend upon the range of a single sensor.
• Radial Cancel - The two sensors are used together to perform a single
position measurement. The second sensor is setup in such a way that it
can measure the radial movement of the target. The radial movement
can then be subtracted out of the position measurement performed by
the first sensor.
Class Attributes
Table C.24 Parameter Object Class Attributes
Attr ID
Access
Rule
Name Data Type Description Semantics
2 Get Max Instance UINT Maximum instance
number of an object in
this class. Total number of parameter
object instances.
8 Get Parameter Class
Descriptor WORD Bits that describe the
parameter. Bit 0 Supports Parameter
Instances
Bit 1 Supports Full Attrib.
Bit 2 Must do non-volatile store
Bit 3 Params in non-volatile
9 Get Config.
Assembly
Instance UINT Set to 0