当扫描用户程序结束后，PLC 就进入输出刷新阶段。在此期间，CPU 按照 I/O映象区内对应的状态和数据刷新所有的输出锁存电路，再经输出电路驱动相应的外设。这时，才是 PLC 的真正输出。这两个例子说明：同样的若干条梯形图，其排列次序不同，执行的结果也不同。
Nordson 105987G I/O 8 Channel Board
Nordson 102812E 8 Channel Temperature Controller
Nordson 272640C 10′ Automatic Hot Melt Hose
Vega ATEX Hart 4-20mA Transmitter/Controller 1047U
TAC 102-AX 0-073-0540-1 VAV Controller / Actuator
Wiremold 4FFATCBK Walker P-Thru Assy Flush 4″ Furn Fee
Omron E5C2-R20G Temperature Controller E5C2R20G
Hitachi HSC-1080 Rack Mount Base S10 Mini HSC-1080
SLOAN EBV-89A-M Side Mount Operator Water Closet
Mettler Toledo B14085700A Logic Control Board
Nissan RBT-IL-Board Output Contact Card
Siemens / ITE ED43B040MX Circuit Breaker 40 Amp
Siemens / ITE ED63B050MX Circuit Breaker 50 Amp
Cisco WIC-1DSU-56K4 Network Card 56K WIC1DSU56K4
Buhler EKH-83A82-8A Memory Card
Graham 02761085 Power Supply / Board
