Code CVIS-166: Vision Standard DEMO expired
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Vision Standard DEMO expired alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Cause: The 60-day use period of the iRVision demo version has expired. Remedy: In order to continue using iRVision, you must restart the controller in Controlled Start mode, enter the Option menu, and enter the necessary PAC code(s) for the iRVision option(s) you require. NOTE: You MUST also enter a PAC code for the iRVision Demo option. To purchase PAC codes for iRVision options, including the iRVision Demo option, contact your local FANUC representative. For further instructions on authorizing options using PAC codes.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code CVIS-166 on the R-30i Series Robot Controller identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 6553 Fanuc R-30i Series Robot Controller codes.
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