CNC LAB

The spindle speed for a particular tool in a program is incorrect and you wish to reduce it. The kind of CNC word you must change is:

• an F word

• an S word

• ) a G word

• a T word

You determine that a feedrate for a particular tool must be 5.0 inches per minute (or 5 millimeters per minute in the metric mode). The correct designation in the program would be:

• F0.5

• F5.0

• S5.0

• F0.005

You are running a proven program (one run before) for the first time in a new setup. You are cautiously allowing the first tool come into its approach position when you determine that the tool is not going where it is supposed to. It is most likely that:

• the spindle speed is not correct

• the program zero designation is not correct

• the dry run switch should be turned on

• the programmed coordinates are not correct

When coordinates going into a program are specified relative to the program zero point, it is called:

• the incremental mode

• the absolute mode

• the rapid mode

• the canned cycle mode

What mode switch position allows programs to be modified?

• Jog

• Auto

• Edit

• Zero return

What mode switch position allows a program to be run from within the CNC control?

• Jog

• Auto

• Edit

• Zero return

What mode switch position allows the activation of a single CNC command?

• Jog

• Edit

• Auto

• MDI (manual data Input)

What mode switch position allows you to send the machine to its reference (home) position?

• Jog

• Auto

• Edit

• Zero return

What mode switch position lets you move the machine axes manually?

• Jog

• Edit

• Auto

• Zero return

Which on/off switch works in conjunction with a slash code in the program?

• Dry Run

• Single Block

• Optional Stop

• Optional Block Skip/Block Delete