Nembered Paramenters accessibility.

bigalex wrote:

Is there a limit for the values entry fields ?
I mean in the largest application I need about 250-300 "parameters" values to be available to configure the machine cycle.

I don't think that there is. There is a limit of 16 analogue inputs to G-code, but this method completely bypasses that interface.
The only possible problem with this is that the G-code can't change the value of any of the persistent parameters, but my impression is that your application does not require that.
(If necessary, the G-code could possibly call user-defined M-code subs to change the values of some parameters, I think)

Can I install LCNC from buildbot aside of the LCNC installation I already have ?

I don't think so, but there is rarely any disadvantage in running the dev version, and it is a simple config-file change and apt-get command to revert to 2.5.2.

bigalex wrote:

Hi Andy.
Can you explain me a little more about the installation procedure?
So I have a current LCNC 2.5.2 installed on the Ubuntu 8.04 Hardy machine.

You can run master on Hardy, but gladevcp is more troublesome there and I don't think the config I posted will work.

So, I think you need to upgrade to Lucid (10.04) and then install the Master version of LinuxCNC.

I am pretty sure that a "standard" upgrade to 10.04 followed by a buildbot install of LinuxCNC will give you the correct (realtime) kernel in addition to the LinuxCNC executables.

I can't test here (the buildbot site is blocked by my work firewall, and VirtualPC won't run the 10.04 version of LinuxCNC even if I could install it)

I don't know if it is currently easy to upgrade from 9.04 to 10.04 without being pushed to 12.04. I guess following the instructions here will make it clear fairly quickly:
help.ubuntu.com/community/LucidUpgrades

It is probably wise to back-up everything you value, then if it all goes wrong a fresh live-CD install recovery is an option. (perhaps download 8.04 and 10.04 live-CDs first? )

bigalex wrote:

1- Make a disk image for a "just in case" recovery ;
2- Install a fresh Ubuntu 10.04 taken from Ubuntu official site alongside to the actual installation (I've also a Windows Server 2003R2 installed) ;
3- Install the Master version of LinuxCNC from buildbot

I think that should work. If it doesn't then you might need to insert:
wiki.linuxcnc.org/cgi-bin/wiki.pl?Instal...ed_LinuxCNC_packages
between 2 and 3.