描述
当X0接通时，T253当前值计数数器开始累积100ms的时钟脉冲的个数。当X0经t0后断开，而T253尚未计数到设定值K345，其计数的当前值保留。当X0再次接通，T253从保留的当前值开始继续累积，经过t1时间，当前值达到K345时，定时器的触点动作。累积的时间为t0+t1=0.1×345=34.5s。当复位输入X1接通时，定时器才复位，当前值变为0，触点也跟随复位。
Square D I-Line NX NX361200 800 Amp A 800A LSI
CH Westinghouse HND 800 Amp 800A A HND3800T32W 8NES800T
Westinghouse SPB 100 Pow-R Breaker SPB100 1600 Amp A
Sew Eurodrive K76SDT 1 HP Ratio:118.45 Gear Reducer NEW
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Square D Schneider Masterpact NW12HF 1200 Amp 1200A A
CH Westinghouse 1200 Amp 1200A A HND312T32W 12NES1200T
