The manual explicitly warns that parameters are factory-set by the machine tool builder. Incorrectly modifying them can lead to:
: Used for adjusting negative soft limits (e.g., if a machine is throwing an OT 5001 alarm prematurely). Fanuc Oi Td Parameter Manual
: You cannot simply change a parameter. You must first navigate to the SETTING screen in MDI mode and change "Parameter Write Enable" (PWE) to 1 . Common Troubleshooting Parameters : The manual explicitly warns that parameters are factory-set