In all cases, the underlying issue is a between the machine’s logic processor and the human interface or hardware.
Do not restart the control and hope it goes away—that just hides the bad code. fanuc 7115 alarm
: The spindle amplifier module might not be receiving the correct signal from the CNC control to switch the contactors. In all cases, the underlying issue is a
At its core, the 7115 alarm is a feedback loop failure. The CNC controller sends a command to the Fanuc servo drive, which in turn moves the motor. When the actual position reported by the encoder differs too significantly from the commanded position—often due to mechanical resistance or electrical glitches—the system triggers the 7115 code to prevent damage. Primary Causes At its core, the 7115 alarm is a feedback loop failure
FANUC parameters dictate how the CNC and PMC share memory.