Rockwell Automation 1756-DMF30 ControlLogix Drive Module - Manual (Page 172)

Publication 1756-UM522B-EN-P - February 2003
B-92 1756-DMD30 Specific Information
744 PositRef EGR Out
Accumuated output of the position reference Electronic Gear
Ratio. When the position regulator is not enabled, this
parameter is initialized to parameter 762 [Mtr Posit Fdbk] or to
the selected position reference as determined by parameter
740 [Position Control] bit 6. Default:
Min:
Max:
Type:
File:
Group: 0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Position Control, Position Control
Interp/Direct, Point to Point
745 PositRef EGR Mul
An integer value in the numerator of the Electronic Gear Ratio
function that is precision multiplied by the selected position
reference. A negative value will effect a change in polarity Default:
Min:
Max:
Type:
File:
Group: 1
-2147483648
2147483648
Linkable, Read-Write, 32-bit Integer
Position Control, Position Control
Interp/Direct, Point to Point
746 PositRef EGR Div
An integer value in the denominator of the Electronic Gear
Ratio function that divides into the product of the numerator
and the selected position reference. Remainders are
accumulated and not lost. Default:
Min:
Max:
Type:
File:
Group: 1
1
2147483648
Non-Linkable, Read-Write, 32-bit Integer
Position Control, Position Control
Interp/Direct, Point to Point
747 Position Cmmd
Final accumulated command to the position regulator. When
the position regulator is not enabled, this parameter is
initialized to parameter 762 [Mtr Posit Fdbk] or to the selected
position reference as determined by parameter 740 [Position
Control] bit 6. Thereafter, its value will reflect the result of
reference and offset changes. Default:
Min:
Max:
Type:
File:
Group: 0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Position Control, Position Control
Interp/Direct, Point to Point
748 CoarsePosit Trgt
A 32 bit integer sink parameter that receives position updates
at a slow but periodic rate. The coarse position target is
applied to an interpolator that presents a smooth position
reference and speed at its output. Coarse position input is
typically linked to a motion planner that will provide target
points at an integer multiple of 1 msec. The maximum coarse
target time interval is 32 msec. The precise time interval need
not be specified but it should be “rock solid” for best
performance. An internal sync pulse must be received at the
time of coarse position update Default:
Min:
Max:
Type:
File:
Group: 0
-2147483648
2147483648
Linkable, Read-Write, 32-bit Integer
Position Control
Interp/Direct
749 Interp Position
Displays the smoothed position output of the interpolator
function that supplies the position reference to the regulator
when selected by parameter 742 [Posit Ref Sel]. Default:
Min:
Max:
Type:
File:
Group: 0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Position Control
Interp/Direct
750 Interp Speed
Displays the smoothed speed output of the interpolator
function. It may linked to speed reference as a feed forward to
secure zero position error. Units:
Default:
Min:
Max:
Type:
File:
Group: RPM
0
-14000
14000
Non-Linkable, Read Only, Floating Point
Position Control
Interp/Direct
No. Name
Description Values