FANUC parameter 1860 offers a flexible way to adjust feed rates on CNC machines, contributing to optimized machining processes. Understanding and effectively utilizing this parameter can lead to improved productivity, better surface finishes, and extended tool life. However, any adjustments should be made with care, and in accordance with the specific requirements of the machining task and the capabilities of the CNC machine.
For rotary axes using a scale without rotary data (such as Heidenhain RCN723 or Futaba FRR902L3DB rotary scales), the reference position data stored in parameters 1860 and 1861 does not need to be renewed. This is because scale data without rotary data is always read when the system is powered on, providing immediate position information.
By understanding and correctly setting Parameter 1860, you can ensure proper I/O communication between your FANUC CNC system and external devices, enabling efficient and reliable machine operation.
Incorrectly modifying parameter 1860 or its associated homing parameters (like 1815 or 1850) can cause the machine to move unpredictably or crash into physical hard stops. Always enable on the Setting Screen before attempting changes. fanuc parameter 1860
Note: Inch machines: multiply mm/min by 0.03937 to get in/min.
: After changing parameter 1860, it's a good practice to test the machine in a non-production environment to verify that the expected behavior is achieved.
The LCD on the guide box now read:
This parameter stores the of an axis in relation to the machine’s reference point (home). It is primarily used with absolute encoders (detectors).
You might wonder, "Why does this specific number matter?" The setting of P1860 directly impacts three critical areas of machine performance:
Spindle cannot reach within the orientation completion width (parameter 1862) due to mechanical binding or incorrect gain. Parameter 1860 might be so low that the spindle never locks. FANUC parameter 1860 offers a flexible way to
Adjusting parameter 1860 can have several effects on machine performance, including:
If a multi-turret or twin-spindle machine suffers a mechanical crash, the physical components may shift. Even after mechanically realigning the turrets or spindles, the electronic alignment might be off by a few hundredths of a millimeter. Parameter 1860 allows you to dial in that micro-adjustment so the two axes think they are exactly where they are supposed to be. 2. Replacing Servo Motors or Encoders
The moment 1815.4 is set to 1, the CNC takes the current raw data from the encoder and writes it into Parameter 1860 . This creates the permanent link between the electrical encoder signal and the mechanical zero of the machine. Common Troubleshooting Scenarios For rotary axes using a scale without rotary