1756-IB16D 输入模块1756-IB16DPLC上的24伏接线端子，还可以向外部传感器（如接近开关或光电开关）提供电流。24伏端子作传感器电源时，COM端子是直流24伏地端。如果采用扩展单元，则应将基本单元和扩展单元的24伏端连接起来。另外，任何外部电源不能接到这个端子上。
如果发生过载现象，电压将自动跌落，该点输入对可编程控制器不起作用。
每种型号的PLC的输入点数量是有规定的。对每一个尚未使用的输入点，它不耗电，因此在这种情况下，24伏电源端子向外供电流的能力可以增加。
输入接线
一般接受行程开关、限位开关等输入的开关量信号。输入接线端子是PLC与外部传感器负载转换信号的端口。输入接线，一般指外部传感器与输入端口的接线[1] 。
输入器件可以是任何无源的触点或集电极开路的NPN管。输入器件接通时，输入端接通，输入线路闭合，同时输入指示的发光二极管亮。
输入端的一次电路与二次电路之间，采用光电耦合隔离。二次电路带RC滤波器，以防止由于输入触点抖动或从输入线路串入的电噪声引起PLC误动作。
若在输入触点电路串联二极管，在串联二极管上的电压应小于4伏。若使用带发光二极管的舌簧开关，串联二极管的数目不能超过两只。
700-AT3A2
700-AV1R
700-AV3R
700-C1
700-C2
700-CF040D
700-CF040EJ
700-CF040KA
700-CF220A
700-CF220B
700-CF220D
700-CF220E
700-CF220EA
700-CF220ED
700-CF220EJ
700-CF220EY
700-CF220F
700-CF220J
700-CF220K
700-CF220KA
700-CF220KB
700-CF220KD
700-CF220KF
700-CF220KG
700-CF220KJ
700-CF220KL
700-CF220KP
700-CF220KY
700-CF220L
700-CF220N
700-CF220P
700-CF220T
700-CF220V
700-CF220VA
700-CF310A
700-CF310B
700-CF310D
700-CF310E
700-CF310EA
700-CF310ED
700-CF310EJ
700-CF310EQ
700-CF310EY
700-CF310F
700-CF310J
700-CF310K
700-CF310KA
700-CF310KD
700-CF310KF
700-CF310KJ
700-CF310KL
700-CF310KN
700-CF310L
700-CF310P
700-CF310T
700-CF310ZJ
700-CF400A
700-CF400B
700-CF400D
700-CF400E
1756-IA16I ControlLogix Input Module
1756-IA32 ControlLogix 32 Pt D/I 120V AC Module
1756-IA8D ControlLogix 8 Point D/I Module
1756-IB16 ControlLogix 16 Pt 12/24V DC D/I Module
1756-IB16D ControlLogix 16 Point D/I Module
1756-IB16I ControlLogix Input Module
1756-IB16IF ControlLogix 16 Point Digital Input
1756-IB16ISOE ControlLogix 16 Isolated Point Module
1756-IB32 ControlLogix 32 Pt 12/24V DC D/I Module
1756-IC16 ControlLogix 16 Pt 48V DC D/I Module
1756-IF16 ControlLogix 16 Pt A/I Module
1756-IF16H ControlLogix 16 Pt A/I HART Module
1756-IF4FXOF2F ControlLogix 4 Pt A/I 2 Pt A/O Module
1756-IF6CIS ControlLogix 6 Point A/I Module
1756-IF6I ControlLogix 6 Point Isolated A/I Module
1756-IF8 ControlLogix 8 Point A/I Module
1756-IF8H ControlLogix 8 Point A/I HART Module
1756-IF8I ControlLogix 8 Point Analog Input
1756-IG16 ControlLogix 16 Pt 5VDC D/I Module
1756-IH16I 1756-IH16I ControlLogix 16 Point D/I Module
1756-IH16ISOE ControlLogix 16 Point D/I Module
1756-IM16I ControlLogix 16 Point D/I Module
1756-IN16 ControlLogix 16 Pt D/I 24V AC Module
1756-IR6I ControlLogix 6 Pt Isolated RTD In Module
1756-IRT8I ControlLogix 8 Point RTD/Thermocouple In
1756-IT6I ControlLogix 6 Pt Isolated TC In Module
1756-IT6I2 ControlLogix 6 Pt Enhanced TC In Module
1756-IV16 ControlLogix 16 Pt 12/24V DC D/I Module
1756-IV32 ControlLogix 32 Pt 12/24VDC D/I Module
1756-JMPR ControlLogix Jumper Bar
1756-L61 ControlLogix 2 MB Memory Controller
1756-L61RMCN1 ControlNet Redundancy Bundle
1756-L61RMEN1 Ethernet Redundancy Bundle
1756-L61S GuardLogix 2 MB Standard Mem Controller
1756-L62 ControlLogix 4 MB Memory Controller
1756-L62S GuardLogix 4 MB Standard Mem Controller
1756-L63 ControlLogix 8 MB Memory Controller
1756-L63S GuardLogix 8 MB Standard Mem Controller
1756-L63XT ControlLogix XT 8 MB Memory Controller
1756-L64 ControlLogix 16 MB Memory Controller
1756-L65 ControlLogix 32 MB Memory Controller
1756-L71 ControlLogix 2 MB Controller
1756-L71S Logix 5571S Automation Controller 2/1M
1756-L72 ControlLogix 4 MB Controller
1756-L72S Logix 5572S Automation Controller 4M/2M
1756-L73 ControlLogix 8 MB Controller
1756-L73S Logix 5573S Automation Controller 8M/4M
1756-L73SXT Logix 5573SXT Automation Controller 8/4M
1756-L73XT ControlLogix 8MB Controller L7XT
1756-L74 ControlLogix 16 MB Controller
1756-L75 ControlLogix 32 MB Controller
1756-L7SP Logix L7SP SIL 3 PLe Safety Partner
1756-L7SPXT Logix L7SPXT SIL 3 PLe Safety Partner
1756-LSC8XIB8I ControlLogix 8 Point Counter Input
1756-LSP GuardLogix Safety Partner
1756-M02AE ControlLogix 2 Axis Analog Servo Module
1756-M02AS ControlLogix Analog SSI Motion Module
1756-M03SE ControlLogix 3 Axis SERCOS Servo Module
1756-M08SE ControlLogix 8 Axis SERCOS Servo Module
1756-M08SEG ControlLogix Generic Motion Module
1756-M16SE ControlLogix 16 Axis SERCOS Servo Module
1756-N2 ControlLogix Empty Slot Cover
1756-N2XT ControlLogix XT Empty Slot Filler
1756-OA16 ControlLogix 16 Point D/O Module
1756-OA16I ControlLogix 16 Point D/O Module
1756-OA8 ControlLogix 8 Pt D/O 120/240V AC Module
1756-OA8D ControlLogix 8 Point D/O Module