Many variables are restricted to protect the system's core logic from accidental modification. Read-Write (RW):
: Auto-assignment of UOP ( $IO_AUTO_UOP ) and override signals in AUTO mode ( $AUTOMODE_OV ). 2. How to Access Variables on the Controller
✅ – Use it to tweak performance, automate setup, or debug odd behavior. ❌ First-time FANUC users – Start with the HandlingTool Operator’s Manual instead. fanuc robot system variables pdf
Mastering variables store the physical relationship between the robot’s mechanical alignment and its electronic encoder counts.
Setting $Master_ENB to makes the "Master/Cal" (zero calibration) option appear in the system menu. This is essential when performing robot zero position calibration after maintenance or component replacement. Many variables are restricted to protect the system's
Perform a complete backup ( All of the Above ) before modifying any system variable.
$MASTER_DONE : Indicates if the mastering procedure has been completed (1) or not (0). How to Access Variables on the Controller ✅
FANUC robot system variables are internal parameters, typically prefixed with a
$MASTER_COUNT : Stores specific pulse counts for each robot axis.
The variable $MOR_GRP[1].ROB_MOVE provides real-time motion status monitoring. In background logic (BG Logic) applications, this variable returns while the robot is moving and 0 when stationary. Note that background logic runs on a tick rate of approximately 8ms minimum, and I/O update cycles may affect signal detection timing.
This article provides an in-depth guide to FANUC robot system variables, how to access them, and where to find the comprehensive documentation. What are FANUC Robot System Variables?
