Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 145)

Publication 1746-6.1.2 - July 2000
9-2 Programming System Variables
The Speed/Direction to Start Homing Axis value is signed. The sign
specifies the direction the axis is to move.
Planning a Home Axis Move
Figure 9.1 shows a typical ladder program block diagram to initiate a
word 5 command from the SLC processor. Other commands are
initiated by setting appropriate values in the data tables and copying
data to appropriate module output words. Examples of these
commands include:
•
Set Home
•
Set Retract
•
Preset Position
•
Set Offset
•
Set In-Position Band
•
Set Excess FE Limit
•
Set Axis Gain
•
Set VFF
Figure 9.1 Home Axis Command Block Diagram
If: Then:
The speed specified is
greater than the maximum
axis speed The speed for the move is limited to the
maximum axis speed.
Any error occurs while
homing the axis The SLC processor is notified with an
appropriate fault code.