``The Sensex rose by 56.5 points or 0.3% to 17,440.9 while the Nifty rose to 5,274.0, up 20.3 points or 0.4%. The Sensex has supports at 17,310 and 17,050 and resistances at 17,510 and 17,600. The Nifty spot has supports at 5,235 and 5,215 and resistances at 5,300 and 5,325,`` it added.
Sensex has resistance at 17,510 & 17,600: