Rockwell Automation GMLC Reference Manual - Manual (Page 248)

Publication GMLC-5.2 - November 1999
Gear Axes 211
Current Speed
Selecting At Current Speed from the Merge from, Cam, or Gear menu,
automatically sets the speed of the jog to the current actual speed of the
axis. Any speed value or expression is ignored. Under certain conditions,
the speed of the merged move may not exactly match the current speed of
the axis. See the Merging Different Types of Motion chapter in this manual
for a discussion of this situation.
Programmed Speed
Selecting At Programmed Speed from the Merge from, Cam, or Gear
menu, sets the speed of the move to the speed value or expression entered
in the Speed field of the Jog Axis block. If this speed is different from the
current speed of the axis, the axis accelerates or decelerates to the new
speed.
Synchronize with next Jog Axis
Select Synchronize with next Jog Axis to have the motion of this Jog Axis
block occur simultaneously with the following Jog Axis block. This lets
you initiate motion on multiple axes simultaneously.
When you select Synchronize with next Jog Axis, the block immediately
following the Jog Axis block must be another Jog Axis block. Otherwise,
GML Commander does not let you connect the two function blocks.
Gear Axes
The Gear Axes block enables electronic gearing between two axes at a
specified ratio. Electronic gearing allows any servo axis to be
synchronized to the actual or command position of another axis at a
precise ratio. It provides a direct edge-to-edge lock between the two
axes—no maximum velocity, acceleration, or deceleration limits are used.
The speed, acceleration, and deceleration of the slave axis are completely
determined by the motion of the master axis and the specified gear ratio.
The Gear Axes block resides on the Main Palette.
When electronic gearing is enabled: