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NC-250: Fanuc CNC Advanced Machine Ladder Logic Troubleshooting

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This 36 hour 4.5 day hands-on training program provides the advanced training needed by CNC service technicians to understand and modify the ladder logic on their machines.   Using the Fanuc NC Guide software, we will recreate one or more of your machine tools.  The class will then diagnose all of the errors that show up.  Since there are no switches being made on the initial startup, almost every alarm the machine can generate will appear.  The students will reverse engineer every alarm and find the resolution to the problem.  Once they have completed this course, they will be very familiar with all aspects of the machine.

This class is available on site or at our location. If done on site, the customer will provide a classroom suitable for training purposes. We can provide a simulator or teach the class on your equipment. A 220VAC supply will be needed for the simulator.


  • Creation of the Machine I/O Configuration
  • Chasing Alarm Messages through the Ladder
  • Using Schematics and Diagnostics
  • Using Function Statements and Tables
  • PMC Navigation
  • Ladder Editing Techniques

If you wish to add, remove or concentrate on any of the topics please let us know. We will accommodate any special requests.

We will need a copy of certain backup information from the machines you wish to be trained on.  Not all machines will qualify for this type of training.  Control types can vary from the 16 model B and up.  The machines will use the Fanuc 0i or 31i control and operator panel as the test subject.

It is recommended that the students have completed the Advanced Fanuc Training class or have comparable experience.

36 Hours / 4.5 days


Toll Free: (888) 468-3591 – Local: (502) 499-7522