Fanuc Robot — System Variables Pdf
System variables are pre-defined variables in FANUC robots that store information about the robot's status, position, and other relevant data. These variables can be used in programs to control the robot's behavior, perform calculations, and make decisions.
Press , choose Set Device , and select your USB drive ( UD1: or UT1: ). Press F4 [BACKUP] and select System Variables . This creates a file named SYSVARS.SV on your USB drive. Step 2: Export as Readable Text ( SYSVARS.TX )
What of FANUC controller are you using (e.g., R-30iB, R-30iB Plus, R-50iA)?
$HOSTC_CFG : Configures HTTP, FTP, and data transfer protocols over Ethernet. fanuc robot system variables pdf
Unlocking Control: A Guide to FANUC Robot System Variables
$MCR_GRP[1].$PRGOVERRIDE : Scales the program speed without changing the manual jog speed.
Used to safely test tight cell clearances without physical axis damage. Real (Percentage) System variables are pre-defined variables in FANUC robots
, which controls menu colors and configurations. Alarm messages for custom user errors are stored in $UALRM_MSG Mastering and Calibration : One of the most frequently accessed variables is $MASTER_ENB
To have a PLC start programs via RSR: Set $RMT_MASTER=0 (for peripheral device), then in System → Config , set ENABLE UI SIGNAL to TRUE and Remote/Local Setup to Remote . Finally, set Program Select Mode to RSR .
FANUC robot system variables are internal parameters, typically prefixed with a Press F4 [BACKUP] and select System Variables
To generate a clean text reference file directly from your controller:
: When modifying system variables via TP programs (e.g., assigning $SCR.$STARTUP_V_M = 10 ), add explanatory comment lines directly above the instruction for future troubleshooting.
If you are troubleshooting a specific issue, tell me you are trying to resolve, what model of FANUC controller you are using, or the specific system variable you need to modify. I can provide the exact sub-variables and safety steps for your setup. Share public link
Enables rapid speed toggling (e.g., jumping from 5% to 100% in few clicks). Read/Write
