1、1. The output and input signals are processed by special high-speed chip, and the signals are modified and amplified to remove unnecessary interference signals and make the whole machine run more stable. 2、LPT port power supply of the computer is isolated from the power supply of other parts to effectively isolate the computer from the machine tool. Thus further ensure the safety and stability. Make computer and machining data more secure 3、There are 5 input signals communicating with the computer host, all separated by optical coupling, which can be set as: limit, origin, tool setting, start, emergency stop, spindle speed input, MPG input and arbitrary 5 functions of them 4、 There are 12 output signals available for use. Up to 6 axis linkage control output can be supported. You can also select only one or more of these axes to control. Some of these 12 outlets are functionally reusable. When used, an outlet can only be used 5、There are 3 relays specially designed to support MACH3 software programming control. MACH3 control software can control the on and off of any relay. Each relay has a suction indicator light, which is more intuitive and convenient to use. These three rela