Ladder — Fanuc Fapt

It is not a separate software, but a built-in machine tool builder's ladder programming and monitoring tool. Here are its key features:

  1. Locate the FAPT button on your old Fanuc control.
  2. Back up your Ladder file TODAY.
  3. Print a hard copy of your machine’s Ladder diagram (use the "PRINT" function if you have a thermal printer).
  4. Learn the difference between an X address and a Y address.

Decoding the Addresses

When you look at a rung in the Fanuc FAPT Ladder, you will see specific prefixes: Fanuc Fapt Ladder

What Exactly is Fanuc Fapt Ladder?

The term "Fapt Ladder" actually refers to a hybrid concept. FAPT stands for Fanuc Automatic Programming Tool. It was Fanuc’s proprietary conversational programming language and software interface, designed to run on older Fanuc CNC controls (specifically the System 6, 11, 15, and 16 series). It is not a separate software, but a

Example Rung (Simplified)

X0.0 (Start PB)      Y0.0 (Motor Contactor)
---] [-------------------( )---

4. Cross-Reference & Search


    

  • Find function: Quickly locate all rungs where a specific address appears.
    • 

  • Contact/coil cross-reference: Shows if a bit is used as a normally open, normally closed, or coil condition.
    • 



5. Data Tables and Parameters


FAPT Ladder includes editors for:


The software provides a Windows-based engineering environment for high-speed machine control logic. Key capabilities include: LADDER-III Programming Software - FANUC America Locate the FAPT button on your old Fanuc control