亚洲av无码国产永久播放蜜芽_国产国语对白精品毛片好看到停不下来！_国产在线日韩精品一区二区_日韩欧美～中文字幕_91cao在线播放国产_日韩欧清无码激情性视频_黄色人人操免费网站_公孙离流泪吐口水躺床_国产剧情AV新春下药_少妇三级免费亚洲

　　Incremental rotary encoder has a resolution of differences, using the number of pulses per revolution generated to measure the number from 6-5400 or higher, the more the number of pulses, the higher the resolution; this is an important basis for selection .
　　Incremental rotary encoders usually have three-way signal outputs (differential six signals): A, B and Z, the general use of TTL level, A pulse front, B pulse after, A, B pulse phase difference of 90 degrees, each ring issue a Z pulse can be used as a reference mechanical zero. A general use leads B or B leads A to be sentenced, I incremental rotary encoder is defined as the encoder shaft clockwise to look forward, ahead of A and B is 90 °, counterclockwise rotation and vice versa for the reverse B A lead of 90 °. There are not the same, depending on the product description.
　　Use PLC gathering data, the choice of high-speed counting module; use the IPC data acquisition, high-speed counting cards can be used; the use of SCM data acquisition, we recommend the use of optical input port coupler.
　　Proposal B pulses do forward (forward) pulse, A pulse to do the reverse (backward) pulse, Z datum zero pulse.
　　Stack establishment count in the electronic device.