Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 155)

Formatting and Interpreting Data Blocks
Chapter 7
7Ć73
Figure 7.44
Axis Control Word 2
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Axis Control Word 2
1 = Get New
Preset Value
1 = Tachometer
Calibrate
Jog Rate Select:
0 0 = Position
1 0 = Following Error
0 1 = Diagnostic
1 1 = Diagnostic
% Feedrate Override
Binary format
Search Home Direction
1 = -
11028
0 = Low
1 = High
(Manual Mode Only)
1 = Software Travel
Limits Override
1 = Return to Position
(Manual Mode Only)
1 = Axis Feedrate
Override Enable
0 = +
Readout Select::
Bits 0 thru 6 Axis Feedrate Override
Enter the axis feedrate override value into bits 0-6. This specifies the
percentage of the programmed feedrate at which moves will be executed
if feedrate override is enabled. The value can range from 0% through
127%, expressed in binary form.
Two bits must be on for axis feedrate override to affect enabled moves in
auto mode:
bit 7 of the SMCW (feedrate override enable for current move only)
bit 10 of the axis control word 2 (axis feedrate override enable)
In manual mode, only bit 10 of axis control word 2 must be on to enable
feedrate override for all manual mode axis motion. Note that feedrate
override affects only the feedrate value for a move, not accel/decel values.
For axis motion to occur, the feedrate override value must be greater than
zero, or the axis feedrate override enable bit must be off to disable the
feedrate override function.
You can select the moves to be affected by the feedrate override value by
turning on bit 7 of the SMCW. If this bit is off, feedrate override does not
affect the move.
If you turn on bit 16 of the most significant home-position word, (see
section titled “External Synchronization of Feedrate Override”) feedrate