Cron commandline for backup

I’m looking for a command line for zima cron to set up a schedule for backup.

I want to back up certain folders to a different nas (old synology that is only ‘on’ on a schedule) at certain times. I understand how the cron expression works to set up the schedule, but have now clue on the syntax of the command line.

it should preform : back up ‘foldername’ to “ip-adress’ or ’name’