PO COl如果在下面的例子中用POSCOIL替换PTCOIL(保持其余的逻辑不变，POSCOIL的能流输入也是交替变化)，逻辑行为将会不同。POSCOIL的状态将会受到第四次扫描过程的影响，写入Xsition，改变其状态和跳变位。在这个例中，POSCOIL不会使Xsition转为ON。.如果第四梯级被删除，POSCOIL将和PTCOIL的动作相同，第–次扫描时，Xsition的值转为OFF,第二次扫描时，Xsition的值转为ON,如此等等。.
RELIANCE ELECTRIC 0-51865-14 NSFP 05186514
DEIF CM-2 USPP CM2
RELIANCE ELECTRIC 0-51865 NSFP 051865
RELIANCE ELECTRIC 0-51865-1 NSFP 0518651
RELIANCE ELECTRIC 0-51865-18 NSFP 05186518
RELIANCE ELECTRIC 0-51865-2 NSFP 0518652
GENERAL ELECTRIC 531X140CCHADM2 USPP 531X140CCHADM2
ASEA BROWN BOVERI 3HAB2242-1 USPP 3HAB22421
ALLEN BRADLEY 1785-L40C15/F USPP 1785L40C15F
LANDIS & GYR 545-797 NSFP 545797
INDRAMAT DKC1.1-040-7-FW USPP DKC110407FW
ALLEN BRADLEY 1336E-A010-AA-E?N NSFP 1336EA010AAEN
SYMAX 8020-SMM-720 USPP 8020SMM720
ALLEN BRADLEY 1336-QOUT-SP12A NSFP 1336QOUTSP12A
GENERAL ELECTRIC DS3860HAIC NSFP DS3860HAIC
ALLEN BRADLEY 1747-L552 USPP 1747L552
COSMOS LS-1842 USPP LS1842
ALLEN BRADLEY 20A-D022A0AYNAN?NN NSFP 20AD022A0AYNANN?N
