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What kinds of timer t are divided into according to accuracy? How many points? 3. Explain the working principle of plc.
This PLC manufacturer and model, such as Siemens S7-200, has 100ms timers T37-T63 and T101t255 * *182, 100 ms timers T33-T36 and T97-. There are 1ms timers T32 and T96 * *, Mitsubishi FX2N has 100ms timers T0-T 199 and 100ms timers T250-T255 * * 206 and 10ms timers t200-t245.

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