For the tool magazine rotation, use the special (Rotate) function block. Press Insert > Functional Instruction > ROTB .
Remote diagnostics became crucial post-2020. The 2021 version of LADDER-III improved its monitoring. fanuc ladderiii 2021
| Issue | Likely Cause | Solution | |-------|--------------|----------| | "Cannot connect to CNC" | Wrong COM port or Windows driver conflict | Go to Device Manager → Ports → Change COM number to 1-4. | | Ladder shows "????" for symbols | Symbol file missing or mismatch | Re-upload symbols from CNC: Online → Upload → Symbol Table. | | Compile error: "Double coil" | Same Y address used in two rungs | Merge the logic or use an R address as an intermediary. | | Software crashes on ladder search | Corrupted project workspace backup | Delete the .bak folder in the project directory. | | Forced output won't release | Force mode still active | PMC → Force → Release All Forces. | For the tool magazine rotation, use the special