, MET 320L Midterm Assignment: CNC G-Code
Programming & Toolpath Offsets | Exercise 1 &
2 Complete Solutions | FlashCut CNC 4 |
2026/2027 Updated | rated 100% correct - ECPI
University
SECTION 1: WORK COORDINATE SYSTEMS &
PROGRAM ZERO (Questions 1–12)
1. What is the primary purpose of a work offset such as G54 in CNC
milling?
A) To set the spindle speed
B) To define the zero point of the workpiece relative to the machine
reference
C) To select the cutting tool
D) To control coolant flow
Correct Answer: B
Rationale: G54 is a work coordinate system offset that tells the CNC machine
where the workpiece zero (part origin) is located relative to the
machine home position, enabling consistent machining .
Source: NIMS CNC Milling Level I Certification Exam
2. In FlashCut CNC, what do G54–G59 commands do?
A) Reset the Program Zero location to a predefined offset away from Machine
Zero
B) Control the spindle speed
C) Select the cutting tool
D) Activate coolant