Fanuc Robot System Variables Pdf __full__ May 2026

FANUC robot system variables are internal parameters, typically prefixed with a

, that control and store the robot’s configuration, status, and operational behavior. These variables are essential for tasks ranging from diagnostic monitoring to advanced programming customization. Core Variable Categories

System variables are often organized into structures that manage specific hardware or software functions: Motion and Jogging fanuc robot system variables pdf

(Motion Control Record): Controls global robot speed override settings. $JOG_GROUP : Manages specific settings for manual jogging. $OVRD_SETUP : Configures the speed override behavior. System Configuration and Mastering

(System Configuration Record): Contains general system setup data. PLCtalk.net ) have user-uploaded legacy PDFs

: Stores dynamic mastering records used for robot calibration. $MASTER_ENB

: A boolean variable used to enable or disable the mastering menu. Interface and Communication $AB_INT_CFG High-risk variables clearly flagged (e.g.

: A structure containing configuration and diagnostic information for the Allen-Bradley interface, such as link addresses and status registers. $UI_CONFIG

: Controls user interface settings, including menu layouts and colors. How to Access and Manage Variables

To view or modify these variables directly on the robot controller: Fanuc RJ3iB System Variable List | PDF | Data Type - Scribd

Example variables (typical names and usage — model-dependent)

• $MV: mode variable (example read-only enum for teach/auto/payl)
• $JPOS / $POS: joint and Cartesian position arrays
• $SPEED_OVERRIDE: speed override percent (read/write)
• $ALARM_NO or $ALRM: current alarm number (read-only)
• $TOOL[n], $BASE[n]: tool and base offset arrays (read/write with caution)
• $TASK.NAME / $TASK.PTR: active task/program identifiers Note: Actual variable names differ by FANUC generation; always confirm in your controller’s PDF.

3. Safety & Critical Variable Highlighting

• High-risk variables clearly flagged (e.g., $SCR.$MCR_SAFETY, $DMR.$CART_ACC)
• Warning sections before modifying motion, safety, or I/O configuration variables
• Locked variables (changeable only in controlled start or with special password)

7. Alternative: FANUC Manuals Collection (Third Party)

Some technical forums (e.g., Robot-forum.com, PLCtalk.net) have user-uploaded legacy PDFs, but their accuracy isn’t guaranteed. Always compare with an official source.