: The Input/Output (I/O) sizes defined in the robot's EtherNet/IP setup do not match the sizes defined in the PLC (e.g., Allen-Bradley Logix controller).
When the alarm hits, do this in order:
: Internal 24VDC power supplies (like those from Izumi ) may be failing, preventing the contactors from pulling in. fanuc 7115 alarm
The FANUC 7115 alarm is a gatekeeper error. It shuts down the machine not because of a mechanical crash, but because the digital nervous system (the PMC and I/O Link) has detected a fatal inconsistency. It is intimidating, but it is almost always solvable with methodical troubleshooting. : The Input/Output (I/O) sizes defined in the