If absolute linear feedback scales are unmounted for cleaning or replacement, the electrical reference grid shifts. Step-by-Step Calibration: How to Set Parameter 1860
The relationship governed by Parameter 1860 can be understood through a simple formula:
Step-by-step instructions for manual FSSB initialization can be found at Are you trying to add a new axis to your machine, or are you troubleshooting a specific FSSB alarm PARAMETER MANUAL fanuc parameter 1860 work
For example, if your machine operates on a 1-micron detection system, entering a value of 3000 into Parameter 1860 for the Z-axis will alter the calculated home position by exactly
On the fourth night, I stayed past my shift. The air tasted like metal filings and lemon cleaner. I sat on an overturned bucket, laptop open, and watched a bank of robots draw their choreographed arcs under fluorescent halos. At 02:13:47 the arm on Unit 12 shuddered. Parameter 1860 flashed. The arm halted, then curved again more carefully, as if to avoid an invisible obstacle. If absolute linear feedback scales are unmounted for
You will rarely need to modify Parameter 1860 during normal daily operations. However, it becomes vital during the following maintenance and repair tasks: 1. Servomotor or Encoder Replacement
If you replace a motor, you should first clear and reset the home position using to get the machine roughly into place. Afterward, run a test piece or check a reference gauge, and use Parameter 1860 to dial in the final accuracy down to the micron. Important Safety Tips When Working with Grid Shifts I sat on an overturned bucket, laptop open,
: While usually updated by the system, technicians may manually adjust Parameter 1860 to "shift" the machine zero without physically moving the encoder or motor.
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are you using (e.g., 16i, 18i, 0i-MC)? Is this for a servo motor or a spindle? With this info, I can provide the exact procedure.