Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 147)

Publication 8720MC-IN002A-EN-P — December 2002
Programming Parameters C-35
Name: Motor_Data Data Display: ASCII Representation of Enumeration R
Parameter No.
141
File:
Motor/Drive/
Fdbk
Group:
Drive Data,
Motor Data Description: Motor Catalog Number
Parameter 141 contains the Allen-Bradley catalog number of the motor. This is a 64 character string which
contains multiple display elements. The data which can be displayed is as follows:
* Motor catalog number
* Motor serial number
* Date motor manufactured
* Manufacturing lot
* Motor ID Number
Default:
From motor
encoder mem. Length
64
character
string Minimum/Maximum
N/A Scaling Resolution
N/A Units
N/A
Name: Mtr_Marker_Ofset Display format: Signed Integer R/W
Parameter No.
150
File:
Procedure
Group:
Orient, Homing Description: Reference offset 1 is used to offset the motor encoder zero point. This parameter describes the
distance between the incremental encoder zero reference marker pulse or the single turn absolute encoder zero
reference point and the desired mechanical zero reference of the axis motor or spindle motor. “Position feedback
1”, parameter 51 - the motor mounted feedback rotary position feedback value, can be modified with this offset.
Parameter 150 provides an offset that compensates for rotary mis-alignment between the encoder zero point and
the desired mechanical zero of the spindle or axis. This parameter is used to configure the axis or spindle motor
zero during startup. A - value produces a clockwise offset angle when facing the shaft end of the motor and a +
value produces a counter-clockwise offset. It should be noted that this is the opposite sense to the position and
orient angle signs. To prevent reversals during orient use a - signed offset for cw orient and a + signed offset for
ccw orient.
Analog Default:
0.00 Length
2 bytes SCANport Min/Max
Min.
≥ -32768,
Max.
≤ +32767
SCANport Scaling Resolution
1 = 1 count as determined by parameter 79
e.g.: with parameter 79 at 3600 cnts/rev, 1 count =
.1 degree, Practical Range = -360.0 to + 360.0
degrees Units
parameter
79
Counts/rev
Default:
0.0 Length
4 bytes SERCOS/DPI Min/Max
Min. ≥ -2 31
Max.
≤ +2 31
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 76
Scaling factor: parameter 77
Scaling exponent: parameter 78
Rotational position resolution: parameter 79 Units
parameter
76
Name: Aux_Marker_Ofset Display format: Signed Integer R/W
Parameter No.
151
File:
Procedure
Group:
orient, homing Description: Reference offset 2 is used to offset the axis or spindle mounted encoder zero point. This parameter
describes the distance between the incremental encoder zero reference marker pulse or the single turn absolute
encoder zero reference point and the desired mechanical zero reference of the axis or spindle. “Position
feedback 2”, parameter 53 - the axis or spindle mounted feedback device position feedback value can be
modified with this offset. Parameter 151 provides an offset that compensates for mis-alignment between the
spindle or axis mounted encoder zero point and the desired mechanical zero of the spindle or axis. This parameter
is used to configure the axis or spindle zero during startup. Parameter 151 is used in the SERCOS interface only.
The secondary auxiliary feedback port is not available in the analog configuration. A + value produces a clockwise
offset angle when facing the shaft end of the motor and a - value produces a counter-clockwise offset.
Default:
0.0 Length
4 bytes SERCOS Min/Max
Min.
≥ -2 31
Max.
≤ +2 31
- 1
SERCOS Scaling Resolution
Scaling type: parameter 76
Scaling factor: parameter 77
Scaling exponent: parameter 78
Rotational position resolution: parameter 79 Units
parameter
76