Fanuc parameter 1815 opt, (2) The encoders of all βi servo motors are absolute. Below is a step-by-step guide on how to accurately set the zero return position. When you turn it Zero Return in FANUC CNC machines is essential to creating an accurate reference point and must be performed whenever using an absolute position encoder, otherwise home positions must be manually reset manually. (3) Use absolute encoder to set machine origin through parameter 1815. Dec 16, 2011 · Here is a link to procedures on Machine Tool Help website. Jun 12, 2025 · Manually move the machine to the home position, set parameter 1815 #4 = 1, shut down the machine and restart with power off, that is to determine the current point as the home position. Manually move the machine to the home position, set parameter 1815 #4 = 1, shut down the machine and (1) FANUC absolute position encoder can replace incremental encoder, but incremental encoder cannot replace absolute encoder. This reverts the machine to Semi-Closed loop (motor encoder only). Feb 13, 2026 · Disable Scale (Temporary): To get the machine running, you can disable the external scale in Parameter 1815 (Bit 1 OPT = 0) and revert to motor encoder feedback. Now perform this procedure for the Y and Z axis. fanuc alarm DS0300: APC. During the switch, the FSSB settings need to be modified: In this video detail explanation of how to set reference of CNC machine . parameter 1815 APC and APZ used to reference all the axis . There are 2 (x12/4000Vis) motors and 1 (x22/4000HVis). Parameter change procedure for Fanuc series machine controls. • All specifications and designs are subject to change without notice. FSSB Setting The FANUC CNC controllers use FSSB (FANUC Servo Serial Bus) to transmit servo control signals. After setting the APC and APZ bits to 1 and cycling the power, the axis' will not move anymore. If 1815 #4 cannot be set to 1 Ensure that the Motor rotates at least one revolution or more Set parameter 1815#5=0, 1815#4=1, 1815#5=1, power off and restart. The export of this product is subject to the authorization of the How to set zero return position for fanuc CNC controls. 5 to 0. 4 and 1815. Here is what you are doing: When the parameter 1815 APZ column changes to a zero, this means the absolute encoder in the respective axis has lost its zero position. Go back to parameter 1815 and change the X APZ bit back to a 1. How to set zero return position for fanuc controls. Zero return procedure and gridshift parameter setting on Fanuc CNC controls Here is out of a Fanuc 18 Parameter Manual APZx - Machine position and position on absolute position detector when the absolute position detector is used 0 : Not corresponding 1 : Corresponding Note: Dec 2, 2018 · 4. The first step is to change the two parameters of 1815. Dec 13, 2002 · Location Wi Apr 4, 2012 #2 Problem is that i can't get the "Z" axis APZ bit at parameter 1815 to toggle to a "1" If i have the APC bit already set to a "1" I'd look at par 1005 bit#1 DLZ, should be 1 for Z axis for a serial abs motor encoder set 1815 APC to 1 power off/on move axis to home position set 1815 APZ to 1 power off/on should set new Bit 1 (OPT) of parameter No. When OPT = 0, the system does not use the linear scale. I am working on the initial setup for the machine and am having problems setting the Zero Reference Return position (parameter 1815). This now set the zero return position. 1815 controls whether to enable the linear scale: When OPT = 1, the system uses the linear scale. Page 1 FANUC Series 16*-MODEL B FANUC Series 18*-MODEL B FANUC Series 160*-MODEL B FANUC Series 180*-MODEL B FANUC Series 160*s-MODEL B FANUC Series 180*s-MODEL B PARAMETER MANUAL B-63530EN/03 Page 2 • No part of this manual may be reproduced in any form. Parameter change procedure for Fanuc series CNC controls. I have a custom machine with 3 fanuc servos. No alarms, no Feb 13, 2026 · Disable Scales (Diagnostic): To run the machine temporarily, you can often disable the external scale in the parameters (typically Parameter 1815 bit 1 "OPT"). Adjusting gridshift and 2nd Zero Reference return position for tool changer and pallet changer. Adjusting gridshift and 2nd Zero Reference return position for ATC tool changer and pallet changer. The 2 (x12/4000Vis) have absolute pulse coders.


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