Fanuc Starting System | Software Please Wait

Every 3 months, perform a full SRAM backup using one of these methods:

You have just powered up your CNC machining center or industrial robot. The FANUC operator panel lights up. You expect to see the familiar position screen or the alarm history. Instead, a stark, white-on-blue (or black-on-amber) text message stares back at you: fanuc starting system software please wait

Below is a guide to help you diagnose and resolve this issue, ranging from simple resets to hardware checks. 1. Identify the Point of Failure 7-segment LED display on the main CPU board inside the controller cabinet. If the display shows a '0' or is blank: This often points to a parity alarm or a failure in the DRAM/CPU. Status Indicators: Every 3 months, perform a full SRAM backup

To minimize downtime and prevent issues during the startup process: If the display shows a '0' or is

No backup? Do not perform this step. Instead, call a FANUC repair service that can dump the SRAM via the Boot Monitor's serial port.

FANUC power supplies are resilient, but a 24VDC supply that is dropping to 19V or spiking to 30V due to a failing PSU can cause the CPU to reset mid-boot. The message appears, then the watchdog timer resets the CNC, looping endlessly.

If the power supply is failing, the CPU may power up enough to display a message but not enough to read the memory.