Rads and Chamfers Fanuc Parameters 8134 3453

Rads and Chamfers Fanuc Parameters 8134 3453

Category : Fanuc Parameters

Messing With Parameters Can Be Fatal!!!!!

To change parameters you need to go to the setting screen in MDI. Now put a 1 in the parameter write box.

Rads and Chamfers Fanuc Parameters. Today we are going to change the parameters that make ,R and ,C work this means you can program point to point and just stuff in some rads and chamfers as an afterthought.

Here’s an article on it if you want to use it

Fanuc have two ways of putting on chamfers and rads and that’s where the confusion lies.

Just do as you’re told (oh and read this article)

So in Parameter 3453 you can set bit #0 (CRD) to a 1 this allows what Fanuc call “Direct Drawing Inputs” to work.

Rads and Chamfers Fanuc Parameters

Also in Parameter 8134 set bit #2 (CCR) to a o

Rads and Chamfers Fanuc Parameters

Now don’t let the description put you off this turns on the crappy one that uses R and R- and K and K-. This only works on 90 degree corners and unless you won Mastermind I wouldn’t even try to understand how it works.


Trust me it’s shit

Anyway Rads and Chamfers Fanuc Parameters 8134 3453 all sorted!

Isn’t it just great to sort out those annoying problems?

If you want to learn about rads and chamfers on a Sinumeric Siemens 840D read this

Other Parameters Of Interest

3203 Clear MDI Screen

3202 Unlock Program 9000 to 9999 and 8000 to 8999 to Edit

3401 Calculator Type Decimal Point or Integer

6005 Allows the Use of Local Subroutines (Newer Control)

6050-6059  Allows you to Call a 9000 series Program with a G Code

6080-6089 Allows you to Call a 9000 series Program with An M Code

That’s it away you go.

Oh just one other thing before you go off and cripple your machine forever.

Do yourself a favour take a picture of the screen before you change a parameter.

If you aint got a camera then you must have a piece of paper.

Even better back everything up.


If you have been affected by any of the issues in this post or need CNC Counselling then contact me.

Or call us

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Look no further Contact CNC Training Centre



February 26, 2022 at 12:35 pm

How to unlock G68 and G69? My fanuc 16i can’t read both G68 and G69 code, show alarm improper G code


    February 26, 2022 at 3:29 pm

    It looks as if you don’t have the macro option on your machine. In MDI key in #1=1. and press cycle start. If you get an alarm it means you don’t have macro. There is no way to turn this on, you have to buy the option from Fanuc

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