[techstephane]

Hello! I need help.
We have a Takumi cnc milling machine (2001) with a Fanuc 18M controller. I noticed that we can move the axes of the machine with the remote control (Handle) while a program is running in automatic memory mode. Which can cause several damages.
Does anyone know how to disable the remote in memory mode?
Thanks

[zavateandu]

the problem must be in the selection switch of the modes-edit,mdi,zrn,auto,handle,etc
when you select one position lets say auto mode,the signal must be in only 1 or 2 contacts ,depending of the PMC ,the rest of signals must be 0
so when auto mode and handle mode ar eboth on that means the 24v that should go off from one contact is still present and i assume is the selector switch or a cable problem
so please in diagnose and check these signals that corespond to each mode you select
any other bits are on or off apart from this,means an anomaly

[techstephane]

Hello, thank's for the informations.

I checked the wiring between the electronic card and the remote control, everything is ok. I noticed that no matter the position of the mode selector (MDI, AUTO, EDIT, HANDLE, JOG, ZRN etc. the 24 volts is always present on the remote.
I tried to find the input/output G0043 in the controller and I did not find it. According to the machine manual (Fanuc) normally it should be under the OPEHIS heading in SYSTEM, but this menu is not found on my machine.

[zavateandu]

look in the ladder for the signal G43.5
Is that signal on no matter what you select?

[techstephane]

Hello,
I did not find the variable G43.5 directly. When I write G43.5 and press the SRCH key, it takes me to the next Ladder: see attached files. However, I found G41, G41.1 and G41.2
Also, I finally managed to check (G0043) the contacts of the mode selector with the PMCDGN function and the bits corresponded to the Fanuc request for each of the functions: AUTO, MDI, HANDLE, EDIT, etc. as you had indicated in your table. I also found them in the machine manual (Fanuc).