Fanuc Parameters

Parameter Page Guide

bit	7	6	5	4	3	2	1	0
	0	0	0	0	0	0	0	0
1300	1300.7	1300.6	1300.5	1300.4	1300.3	1300.2	1300.1	1300

Parameter List

PARAMETER	BIT	VALUE	CHANGE
Machine Setup
1300	1	1	Turn off overtravel alarm when handle jogging
Cycle Parameters
5101	2	1	G83 Full Retract
Program Protection & Search
3202	0	1	Lock 8000 Programs
3202	4	1	Lock 9000 Programs
3457	0	0	Library Folder is searchable
3457	1	0	MTB2 Folder is searchable
3457	2	0	MTB1 Folder is searchable
3457	3	0	System Folder is searchable
3457	7	1	Search is made in a particular order
Custom G-Code Assignments
6050	N/A	####	Custom G-Code that calls program 9010
6051	N/A	####	Custom G-Code that calls program 9011
6052	N/A	####	Custom G-Code that calls program 9012
6053	N/A	####	Custom G-Code that calls program 9013
6054	N/A	####	Custom G-Code that calls program 9014
6055	N/A	####	Custom G-Code that calls program 9015
6056	N/A	####	Custom G-Code that calls program 9016
6057	N/A	####	Custom G-Code that calls program 9017
6058	N/A	####	Custom G-Code that calls program 9018
6059	N/A	####	Custom G-Code that calls program 9019
Macro Configuration
6000	0	1	Enable Custom Macro B function
6001	0	1	Enable macro single block (step through macro blocks)
6001	5	1	Enable macro executor interrupt (high-priority macro)
6008	N/A	####	Common variable starting number for volatile range expansion
6200	0	0/1	Argument style: 0=Argument 1, 1=Argument 2 (I/J/K repeat)
Program Display & Editing
3204	4	1	Protect all programs from editing
3290	7	1	Suppress leading zeros in program display
3401	0	1	Enable background editing

Parameter Data Types

Fanuc parameters come in several data formats. Understanding the format is essential for reading and writing parameters correctly.

Data Type	Size	Value Range	Example
Bit	1 bit	0 or 1	Parameter 3202 bit 0 = lock O8000 programs
Byte	8 bits	0–255 or -128–127	Individual flag bytes
Word	16 bits	0–65535 or ±32767	Timer values, simple counts
Double-word	32 bits	0–4294967295 or ±2147483647	Parameter 6050–6059 (G-code numbers)
Axis type	Varies	One value per controlled axis	Per-axis settings (backlash, pitch error)

Reading bit parameters: A single parameter number (e.g., 3202) contains 8 bits numbered 0–7. The bit number specifies which single flag within that byte you're setting. For example, parameter 3202 bit 0 controls O8000 program lock, while 3202 bit 4 controls O9000 program lock — they're in the same parameter but different bits.

Parameter Write Protection (PWE)

Most parameters are protected from accidental changes. To modify a parameter:

Step	Action	Notes
1	Press MDI mode	Must be in MDI or EDIT mode
2	Go to SETTING page, set PWE = 1	Parameter Write Enable — enables editing
3	Navigate to the parameter and change its value	The control will show an alarm (P/S 000) while PWE is on
4	Set PWE = 0	Always turn off when done
5	Press RESET to clear the alarm	Normal operation resumes

Safety warning: Changing parameters incorrectly can cause machine crashes, axis runaways, or data loss. Always record the original value before changing a parameter. Some parameters require a power cycle to take effect.

See also: Custom G/M Cycles for parameter 6050–6059 custom G-code setup in detail, Fanuc System Variables for the runtime variable reference, and Macro Structure for program protection and O-number ranges.

References