PTCON(NTCON)触点和POSCON(NEGCON)触点的本质区别在于每个用于逻辑控制的PTCON或NTCON触点指令有自己的关联实例数据。该实例数据给出了触点最后–次执行时与触点相关的BOOL变量的状态。因为每个PTCON或NTCON指令的实例都有自己的实例数据，使得与相同BOOL变量相连的两个PTCON或NTCON指令的表现不同成为可能。
Barber Colman Control Card Rack 40AA-201BC-CCA-A-00 #36
MSA Circuit Board 711386 #32995
Mitsubishi BN624E081 Circuit Board #20836
Cincinnati Milacron Logic Board 3 531 3742A #36320
Barber Colman Sequence Module 80CA-10001-001-0-00 #3279
General Electric AC Motor, 5K365JL322APF2, #6072
STI Mini-Safe Light Curtain M54336BR, 42672-0360 #22345
Fanuc 44A397896-G01 Circuit Board GE #7733
Westinghouse Circuit Breaker JA32250SM, 225 Amp, #14696
Parker Interface Board EW10-102D/2 #11236
Van Dorn CRT Pathfinder Keypad A-13201-101 #38841
Allen Bradley 1775-P1 Power Supply #28858
Square D Circuit Breaker LAL36300, 300 Amp 3 Pole Serie
Ge Fanuc Memory Module IC697MEM715 B #10599
Square D Circuit Breaker LAL36300 300 Amp #30126
Hub City Bevel Gear Drive 0221-12197-519, 88 #28911
ABB Output Module Board APTBK02, E-32244 #38477
Square D Circuit Breaker LAL36300, 300 Amp #30116
Square D Circuit Breaker LAL36300, 300 Amp #30119
General Electric IC697MEM715 B PC Board #29192
General Electric PC Board IC697MEM715 B #29194
