Advice on how to use an incremental encoder！

Advice on how to use an incremental encoder?
1, incremental rotary encoder has a resolution of differences, using the number of pulses per revolution generated to measure the number from 6-5400 higher, the number of pulses or more, the higher the resolution; this is an important basis for selection one.
2, incremental 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 circle Z sends a pulse to be referred to the mechanical zero position. A general use leads B or B leads A to be sentenced, I incremental 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 ahead A is 90 °. There are not the same, depending on the product description.
3, the use of PLC data collection, 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.
4, it is recommended to do B burst forward (forward) pulse, A pulse to do the reverse (backward) pulse, Z datum zero pulse.
5, the establishment of a stack count in the electronic device.

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