Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 117)

Manual/MDI Operation Modes
Chapter 4
4-13
In manual data input (MDI) mode, you can control machine operations by
entering program blocks directly using the keys on the operator panel.
To begin MDI operations, select MDI under <MODE SELECT> or press the
{FRONT PANEL} softkey followed by the left and right cursor keys to select
the mode if not equipped with a mode select switch.
Your system installer has the option of disabling G- or M-code
AMP-defined paramacro calls in MDI mode. For details on paramacros,
see chapter 18.
To insert blocks in an active, executing program using MDI, the control
must be in the end of block state to allow the selection of MDI mode. If
you press cycle stop to interrupt a program while executing in automatic
mode, the control does not allow the selection of MDI. This is because the
control is in cycle suspended state, not end of block state and so, a mode
change is not accepted.
ATTENTION: When program blocks are executed in MDI,
dresser/wheel radius compensation is not allowed. If
dresser/wheel radius compensation was previously active before
the MDI blocks are executed, it is temporarily cancelled for the
execution of the MDI blocks. See chapter 15 for details on the
effect of MDI on dresser/wheel radius compensation. Any
dresser/wheel radius compensation G codes (G41, G42, or G40)
that are programmed in MDI mode affect the dresser/wheel
radius compensation mode when compensation is re-activated.
4.8
MDI Mode