Fanuc Fapt Ladder Direct

On older CNC models (late 80s to mid-90s), the ladder was displayed using character-based graphics. Technicians had to navigate using soft keys under the CRT. This version stored the ladder on EPROM chips or RAM with a battery backup.

A critical diagnostic feature: highlight any address (e.g., X100.0 – a limit switch), and FAPT Ladder instantly shows every rung where that address is used as a contact or coil. This makes tracking down intermittent failures much faster. Fanuc Fapt Ladder

WARNING: Editing a live machine can cause crashes. Never edit a ladder on a production job without a backup. On older CNC models (late 80s to mid-90s),

This is how the logic would look inside the Fapt Ladder III software or the PMC display on the machine. A critical diagnostic feature: highlight any address (e

   |                                                     |
   |   X0.0 (Btn)        X0.1 (E-Stop)      R100.0      |
   |---[ ]----------------[ / ]--------------( )---------|
   |           |                                        |
   |           |   R100.0                               |
   |           |---[ ]----------------------------------|
   |                                                     |
   |   F7.0 (M08)        X0.1 (E-Stop)      R100.0      |
   |---[ ]----------------[ / ]--------------( )---------|
   |                                                     |
   |                                                     |
   |   R100.0 (Latch)     X0.1 (E-Stop)     Y0.0 (Pump)  |
   |---[ ]----------------[ / ]--------------( )---------|
   |                                                     |
   |   F7.1 (M09)                                        |
   |---[ ]------------------------------------(RST R100.0)|
   |                                                     |
   END