描述
三个定时器产生一组顺序脉冲的梯形图程序，顺序脉冲波形如图5-8b所示。当X4接通，T40开始延时，同时Y31通电，定时l0s时间到，T40常闭触点断开，Y31断电。T40常开触点闭合，T41开始延时，同时Y32通电，当T41定时15s时间到，Y32断电。T41常开触点闭合，T42开始延时．同时Y33通电，T42定时20s时间到，Y33断电。如果X4仍接通，重新开始产生顺序脉冲，直至X4断开。当X4断开时，所有的定时器全部断电，定时器触点复位，输出Y31、Y32及Y33全部断电。
PACIFIC SCIENTIFIC SC720 SC724A001 SC724A-001 w PM72007
PACIFIC SCIENTIFIC 0113442-01 INERTIA REEL- POWERED
PACIFIC SCIENTIFIC SC320 SC322A-001 SERVO CONTROLLER
Pacific Scientific Brushless Servo PC833 -001-A (E-D)
PACIFIC SCIENTIFIC 0113679-01 INERTIA REEL- POWERED
Pacific Scientific SC402-010 Servo Controller
Pacific Scientific SC403-002 Servo Controller
Pacific Scientific CAT #: 45VM62-200-4 Motor for Fuji
SCIENTIFIC AMERICAN August 9 1919 Northern Pacific B779
PACIFIC SCIENTIFIC 5240 INDEXER DRIVE 110VAC 1PH 60Hz
17 PACIFIC SCIENTIFIC H21NRHT-JNN-NS-00 STEP MOTOR
PACIFIC SCIENTIFIC SERVOMOTOR R46GENA-TS-NS-VS-00 New
Pacific Scientific Control Driver SC422-460-T2 for BBH
Pacific Scientific servo motor PMB23B-20100-99 (E-D)
