1746-A7/B

详情描述：

1746-A7/B

1746-A7/B

1746-A7/B

   PLC与电气回路的接口，是通过输入输出部分（I/O）完成的。I/O模块集成了PLC的I/O电路，其输入暂存器反映输入信号状态，输出点反映输出锁存器状态。输入模块将电信号变换成数字信号进入PLC系统，输出模块相反。I/O分为开关量输入（DI），开关量输出（DO），模拟量输入（AI），模拟量输出（AO）等模块。

            开关量是指只有开和关（或1和0）两种状态的信号，模拟量是指连续变化的量。常用的I/O分类如下：

            开关量：按电压水平分，有220VAC、110VAC、24VDC，按隔离方式分，有继电器隔离和晶体管隔离。

            模拟量：按信号类型分，有电流型（4-20mA,0-20mA）、电压型（0-10V,0-5V,-10-10V）等，按精度分，有12bit,14bit,16bit等。


          100 Allen Bradley Carbon Comp Resistors 100k 1/2W                                         
                                                  
          ALLEN BRADLEY 100-C09Z STARTER W/140M-C2E-B10 MPCB 10A                                        
                                        
          ALLEN BRADLEY 100-C09Z STARTER W/140M-C2E-B25 MPCB 2.5A                                        
                                        
          Allen Bradley Contactor 100-A45ND3 120Vac 45A                                        
                                                  
          Allen Bradley 100-B180N*3 Contactor                                        
                                                  
          ALLEN BRADLEY # 100-A24NZ253 SER.B NEW IN FACTORY BOX                                         
                                                  
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          NIB ALLEN BRADLEY 100-C23J400 CONTACTOR 100C23J400                                        
                                        
          Allen Bradley Contactor/Complete Device 100-C09ZJ200                                        
                                                  
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          Allen-Bradley 100 AMP AC LIGHTING CONTACTOR 500L-DOD93                                        
                              
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          Allen Bradley 100-C30ZD00 Contactor 30 Amp 600V                               
                                                  
          Allen Bradley 100-C16D400 Contactor 110/120VAC                               
                                                  
          NEW ALLEN-BRADLEY1492-GHD100 CIRCUIT BREAKER 2 POLE 10A                                        
                                                  
          Allen Bradley 100-A30N*3 Contactor                                        
                                                  
          Allen Bradley Non-Reversing Contactor w/ OLR 100-A38ND3                                        
                                                  
          Allen Bradley SLC100 PLC SLC100 1745-E101                                        
                                                  
          ALLEN BRADLEY CONTACTOR 100S-C23DJ32C COMPLETE DEVICE                                        
                                                  
          Allen Bradley 100-A12NJ3 Contactor                                        
                                                  
          NEW ALLEN BRADLEY 100-C60D*00 ELECTRIC MOTOR CONTACTOR                                        
                    
          ALLEN BRADLEY DUAL 100K OHM TUBE PRE AMP LIN TAPER POT                                        
                                                  
          ALLEN BRADLEY 100-A09ND3 CONTACTOR W/RELAY 193-BSB22                                        
                                                  
          ALLEN BRADLEY 100-A09ND3 CONTACTOR W/RELAY 193-BSB16                                        
                                                  
          ALLEN BRADLEY 100-A09ND3 CONTACTOR W/RELAY 193-BSB12                                        
                                                  
          Allen-Bradley 1491-R333 Fuse Block 100A 600V 3P Class R                                        
                                                  
          Allen Bradley Cat # 100-A45N*3 Contactor w/ 195-GA10                                         
                                                  
          Allen Bradley 100-C30DJ00 Contactor 3 pole 24 V DC NNB                                         
                                        
          Allen Bradley 100 A 500L-DOD93 115-120 V Contactor 600V                                        
                                                  
          Allen Bradley 100-C37B00 Contactor                                        
                                                  
          ALLEN BRADLEY 100-A30NZ243 30 AMP 24 VDC 3PH CONTACTOR                                        
                                                  
          NEW ALLEN BRADLEY 10A CIRCUIT BREAKERS 1492-CB2H100                                        

          ALLEN-BRADLEY 100A DISCONNECT SWITCH BUL. 1494F                                        
                                                  
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          Allen Bradley 100-C43D00 100C43D00 Contactor Relay                                        
                                                  
          ALLEN BRADLEY 1492-SP1C100 10A CIRCUIT BREAKERS LOT 27                                        
                                                  
          1492GHD100 NEW ALLEN BRADLEY 1492 GHD100 FREE SHIP                                        
                                        
          100C16B10 NEW ALLEN BRADLEY 100 C16B10                                         
                    
          100C16L10 NEW ALLEN BRADLEY 100 C16L10                               
                                                  
          Allen Bradley Motor Contactor Starter, 100-A45N*3 - 45A                                        
                                                  
          Allen Bradley 100 A38N 3 Ser C                                        
                                                  
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           ALLEN BRADLEY SLC 150 SLC 100 1745-E107                                        
                                                  
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          ALLEN-BRADLEY 100-A45N*3/C CONTACTOR 45AMP 3POLE                              
                                                  
          8489 NEW Allen-Bradley 1492-CB2G100 Motor Controller                                        
                                                  
          ALLEN BRADLEY 100-CR16D10 NSFP 100CR16D10                                        
                                                  
          ALLEN BRADLEY 100-C12DJ01 USPP 100C12DJ01                                        
                                                  
          ALLEN BRADLEY 100-IEC2 NSFP 100IEC2                                        
                                                  
          New Allen Bradley 30A Contactor, 100-C30KD10                                        
                                        
          100A24NJ3 NEW ALLEN BRADLEY 100 A24NJ3                                         
                                        
          ALLEN BRADLEY 100-SC23ZJ14BC USPP 100SC23ZJ14BC