it was because of bad servo drive board
we get an error in our okuma LU15 with OSP-U100 (please look at the attached picture)
" 835 alarm-p communication error "
what we did for this alarm are ; checking cable(optic and others) , changing complete rack with boards(ACP , UCP , UCMB .. boards) and reloading system software
but nothing changed , still same.
is there any other idea to fix this error ?
Last edited by cnc312; 02-07-2012 at 05:42 AM. Reason: solved