Numerical control machine tool controls the function of the characteristic of I/0 component and circuit

Can reach in component of control of the computer and peripheral equipment, machine tool pass undertake necessary information is changed between feeling component. Normal >b.

Have block to break or restrain interference signal to enter the ability of the computer. Normal >(2) photoelectricity keeps apart circuit: NOrmal >a.

Purpose Normal >(a) prevents part of machine tool strong report and outside other interference enters the computer through I/O interface. Normal >(b) finishs signal n to change conveniently (be like + 5V and + between 12V) . Normal >b.

Commonly used parts of an apparatus -- photoelectricity lotus root closes implement. Normal >c.

Typical photoelectricity keeps apart circuit Normal >(a) outputs circuit Normal > ① is the same as to output circuit -- when should controlling signal to be low n, 74LS05 does not guide, the glow diode that outputs thereby ends, output is low n. When control signal is tall n, 74LS05 guides, give off light thereby diode guides, photosensitive dynatron gets incentive and guide, output is tall n (adjacent + 12V) . Normal > ② outputs circuit reversely -- when should controlling signal to be low n, 74LS05 does not guide, glow diode and photosensitive dynatron end, output circuit is tall n, when control signal is tall n, 74LS05 guides, give off light thereby diode and photosensitive dynatron guide, output circuit ground connection and be low n (be close to 0V) . Normal >(b) input Normal > closes when K when, glow diode guides, incentive photosensitive dynatron guides, choose the numerical value of Rc appropriately, can make output dynatron to output saturation, output 0.

The TTL low n of 3V. When K disconnects, glow diode and photosensitive dynatron end, output the n with tall TTL. CNC Milling