Here are two sites that have free manuals. Yours looks like what was sometimes labelled Maximat Standard , so check those manuals too.
The first is where a French forum stores their manuals. I find it easier to go to onedrive than use their forum. You may have to log in with a (free) microsoft account to download.
Sign in to your OneDrive cloud storage and Office Online.
onedrive.live.com
This one has mostly the same manuals. You may have to join the forum to download. Look on the left under wiki, documntation/manuels
www.usinages.com
Fred