... .3,Drumless,fully electronic control system4,Exclusive inner cam block system for high speed.5,Stepping motor for elastic yarn and ... .6,Electro-pneumatic yarn finger and cam control7,Pattern Depth up to 1,200 courses.8,Multiple stop motion sensors in ... motor adopted.13,Minimized and easy operating function.14,battery back-up to protect stored program.15,Internal UPS can support continuous ...