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    Fanuc Alarm 002: TV PARITY ALARM

    ByCNC Hub Team March 1, 2026

    Fanuc Alarm 002: TV PARITY ALARM Fanus Control Model: 16i/18i/21i Description When a program is loaded into a CNC machine from a PC, laptop, or an old DNC device, the system checks the number of characters in each line and their order. If the TV Check parameter is turned on and the number of characters…

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  • CNC Alarms

    Fanuc Alarm PS006: Illegal Use of Minus Sign

    ByCNC Hub Team February 25, 2026February 25, 2026

    Fanuc Alarm PS006: Illegal Use of Minus Sign Fanus Control Model: Series 0i (Model C, D, and F), Series 30i / 31i / 32i, Series 16i / 18i / 21i Description Minus Sign – is written in a place where it is not allowed. This alarm can sometimes be caused by a logical error in…

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  • CNC Alarms

    Fanuc Alarm PS058: S–COMMAND OUT OF RANGE

    ByCNC Hub Team February 24, 2026February 24, 2026

    Fanuc Alarm PS058: S–COMMAND OUT OF RANGE Fanus Control Model: 0i-D/F series, 16i/18i/21i, and the 30i/31i/32i series. Description If a spindle speed is written in the program that exceeds the machine’s operating capacity, the system will immediately stop the operation and an alarm will appear on the screen. How to Fix Alarm Check the S…

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  • Uncategorized

    Fanuc Alarm 14 CAN NOT COMMAND G95

    ByCNC Hub Team February 22, 2026February 22, 2026

    Fanuc Alarm 14 CAN NOT COMMAND G95 Fanus Control Model: Fanuc 0 (0-M/0-T), 0i, and 16/18/21 series controls Description Technically, the G95 code tells the machine to cut per revolution, which is directly related to the spindle speed. The most common cause of this alarm is that the Spindle Digital Encoder is either not installed…

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  • Beginner Guides

    Chamfer and Radius in CNC Programming with Example

    ByCNC Hub Team February 18, 2026February 18, 2026

    Two very important commands are used to eliminate sharp corners of a workpiece or give them a specific shape: Chamfer and Radius. Through these commands, you can round the corners according to the design or create a bevel. The advantage of this is that the workpiece will be safer to handle, its strength will increase,…

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  • CNC Alarms

    Fanuc Alarm PS123: Missing END Statement

    ByCNC Hub Team February 17, 2026February 17, 2026

    Fanuc Alarm PS123: Missing END Statement Fanus Control Model: Series 0i, 16i, 18i, 21i, and 30i/31i/32i controls Description When you forget to write END at the end of a program using commands like `WHILE` or `IF` in a macro program, the CNC system gets confused and generates an alarm. How to Fix Alarm Go into…

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  • G-Code & M-Code

    What is G28 G-Code? Function, Syntax & Example

    ByCNC Hub Team February 16, 2026

    G28 is an important reference command in CNC machines. It returns the machine to its Home Reference Point. When a program finishes or a tool change is required, the G28 command moves all or selected axes (X, Y, Z) back to their original safe position. Operators also call this process a “zero return.” What is…

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  • CNC Alarms

    Fanuc Alarm PS449: Illegal Tool Life Data

    ByCNC Hub Team February 15, 2026February 15, 2026

    Fanuc Alarm PS449: Illegal Tool Life Data Fanus Control Model: Series 15 (Model A and B), Series 10 / 11 / 12 Description This alarm occurs when there is a technical error in the Tool Life Management data in the machine control system or the specified life limit for a particular tool in the system…

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  • CNC Alarms

    Fanuc Alarm PS900: G72.1 NESTING ERROR

    ByCNC Hub Team February 13, 2026February 13, 2026

    Fanuc Alarm PS900: G72.1 NESTING ERROR Fanus Control Model: Series 15i, 16i, 18i, 21i, and 30i/31i/32i Description This alarm appears when the “G72.1” (Subprogram Call for Figure Copy) command is used incorrectly in CNC programming. The main reason for this alarm is exceeding the “Nesting” limit, that is, when you call several subprograms consecutively within…

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  • CNC Alarms

    Fanuc Alarm PS891: ILLEGAL COMMAND G05

    ByCNC Hub Team February 12, 2026February 12, 2026

    Fanuc Alarm PS891: ILLEGAL COMMAND G05 Fanus Control Model: Series 15 control (including Series 15-MA, 15-TA, 15-MF, and 15-TF). Description When the G05 command is written incorrectly in the program or the controller detects a technical error in the use of the G05 command. One reason for this alarm is that the G05 command is…

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