输入输出设备：它用以接收信号或输出信号，便于与PLC进行人机对话。输入的有条码读入器，输入模拟量等。输出的有打印机、编程器、监控器虽也可对PLC输入信息，从PLC输出信息，但输入输出设备实现人机对话更方便，可在现场条件下实现，并便于使用。随着技术进步，这种设备将更加丰富。
DD Rack 8 He Flightcase 19" Rack Amprack / Griff horizontal
7992A55H01
PS11035 AC MOTOR CONTROLLER, 40A
HD60125, SS RELAY 48-660 V - PM IP00 SSR, 660VAC/125A

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Harting Steckverbindung 72. polig mit L?tkontakten AVU-TOVU-29
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G02B 25 pc lot
LPQ113
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2MBI150J-120
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DTT
RP15450 G6, CP Clare, Socket for LB Relay PC bb
EP3C25E144I7N
FZ1200R16KF4_S1
KP2000A-2800V, TECHSEM SCR/GTO transistor
CM200DU12H 200A, 600V, N-CHANNEL IGBT
Sick WT27L-2F430 Reflexions-Lichttaster
1MBI300SA-120B-52
A50LM
68A7208P18A
Markem-Imaje Stand Cross Mounting Block
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XC2S400E-6FT256C
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FZ1200R33KF1
OP271AZ
Grohe DSL 7322 Drehspiegelleuchte rot 240V H1 37322
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Weitkowitz WZ23 Presszange für isolierte Kabelschuhe 90723
5SDD71X0400, ABB diode module