A rep for the Broward County Courts confirms ... Mason was due to appear in court on Monday to be arraigned for his March 5th arrest -- when he was popped for weed possession, reckless driving and resisting arrest.
Now, the judge has issued a warrant for his arrest -- and when he is taken into custody, his bond will be set at $1,500 ... court officials tell us.
The original incident made headlines when police used a taser to subdue Mason following which he was taken to a local hospital for treatment.
Mason is headed into his third year with the Rams after being drafted in the third round of the 2014 NFL Draft.
More to come at TST as it's made available.