3ASC25H203 ABB

输入扫描  在这一阶段中，PLC以扫描方式读入所有输入端子上的输入信号，并将输入信号存入输入映像区，输入映像存储器被刷新。在程序执行阶段和输出刷新阶段中，输入映像存储器与外界隔离，其内容保持不变，直至下一个扫描周期的输入扫描阶段，才被重新读入的输入信号刷新。可见，PLC在执行程序和处理数据时，不直接使用现场当时的输入信号，而使用本次采样时输入到映像区中的数据。如果输入设备能使PLC输入端形成闭合回路，对应输入端编号的内部输入继电器内保存为“1”，即相当于继电器线圈导通。在程序执行过程中，该编号对应的触点动作；如果输入设备能使输入开路，则对应输入端编号的内部输入继电器内保存为“0”，即相当于继电器线圈没导通，在程序执行过程中，该编号对应的触点不动作。如果在PLC处于非输入扫描的阶段，PLC外的输入设备状态发生了变化，内部输入继电器也不会发生变化，要等到下一个输入扫描阶段才能根据此时的输入状态来刷新。所以，对于少于十几毫秒的输入信号，经常采集不到。

Hitachi BBB5-01 PCB Hitachi M-712E  

Hitachi 271-5663 Circuit Board ECDE100 Hitachi S-9380

Hitachi 271-5017 Circuit Board ECDI100 Hitachi S-9380

Hitachi 569-5510 Circuit Board ST Sensor Hitachi S-9380 Main Body  

Hitachi 271-5289 271-5292 Circuit Board ECPU510 NEME510 Hitachi S-9380

Hitachi S-9300 Etcher 271-2863 ECPU263 Circuit Board

Hitachi 564-5501 Circuit Board CHR IF Hitachi S-9380

Hitachi S-9300 Etcher 560-5546 AMHS Circuit Board

Hitachi BBDP2-01 Circuit Board Hitachi M-712E  

Hitachi 568-5590 Circuit Board ST.Sensor Hitachi S-9380 Main Body  

Hitachi BBDP2-01 Circuit Board Hitachi MU-712E  

Hitachi DT-01A Circuit Board Hitachi MU-712E  

Hitachi BBDP1-01 Circuit Board Hitachi MU-712E  

Hitachi RYY-1 Circuit Board Hitachi MU-712E  

Hitachi BBB1-02 Interface PCB Hitachi MU-712E  

Hitachi 271-5210 271-5214 Circuit Board ECDR100 NCDR100 Hitachi S-9380

Hitachi S-9300 Etcher 564-5507 NSGVA Circuit Board

Hitachi 564-5531 Circuit Board MHV Hitachi S-9380 Main Body  

Hitachi UTL550-02N Circuit Board Hitachi MU-712E  

Hitachi S-9300 Circuit Board 568-5589 PASUB

Nikon Circuit Board 4S017-716 PD-MTH

Hitachi 568-5567 Circuit Board FA-I/O Hitachi S-9380

Hirata HPC-778 Circuit Board Hitachi MU-712E  

Hitachi 569-5535 Circuit Board SDCPS Hitachi S-9380 Main Body  

Hitachi S-9300 Etcher 568-5591 568-5506 SIPMAIN2 Circuit

Hitachi S-9300 Etcher 560-5547 AMHS Circuit Board .

Hitachi S-9300 Etcher 568-5559 PS DISP Circuit Board

Hitachi 569-5567 Circuit Board COL-CN2 Hitachi S-9380 Main Body  

Hitachi 549-5501 Circuit Board SIO/DIST Hitachi S-9380

Melec KP1229-2 Circuit Board C-822 Hitachi S-9380

Hitachi 569-5516 Circuit Board ME I/F Hitachi S-9380 Main Body  

Hitachi 564-5528 Circuit Board PS DISP Hitachi S-9380 Scanning Electron Microsco

Hitachi M-712E Chamber RF Components 2M130 MB1040-B  

Hitachi 560-5502 Circuit Board NOMAFC Hitachi S-9380 Scanning Electron Microscop

Hitachi 569-5561 Circuit Board AlarmIF4 Hitachi S-9380 Main Body  

Hitachi VME Micro Computer Hitachi M-712E  

Hitachi 569-5558 Circuit Board N-VSCN Hitachi S-9380 Main Body  

Hirata HPC-784A Circuit Board Hitachi MU-712E  

Hitachi 564-5538 Circuit Board PE.HV Hitachi S-9380 Main Body  

Hitachi 569-5505 Circuit Board ST Sense Hitachi S-9380 Main Body  

Hitachi S-9300 Etcher 560-5502 NOMAFC

Hitachi HT98309 Backplane Circuit Board MB5 Hitachi M-712E  

Hitachi HT94219A Circuit Board PIO1 Version H1 Hitachi M-712E  

Hitachi S-9300 Etcher 560-5506 NE-Q Circuit Board

Hitachi HT96611A Circuit Board Version G Hitachi MU-712E  

Hitachi 569-5597 Circuit Board DEF-PS Hitachi S-9380 Main Body  

Melec Circuit Board KP1178-4 C-820A Hitachi S-9300 Etcher

Hitachi M-712E Etch Chamber EC1 Vacuum Control Box  

Hitachi S-9300 Etcher 568-5591 SIPMAIN 560-5556 SIP-SUB Circuit Board

Hitachi S-9300 Etcher V-DSP240/SP SDS-9725 Circuit Board

Hitachi S-9300 Etcher 568-5502 568-5503 560-5512 IMSUB Circuit Board

Hitachi MU-712E BR Control Box   BBBS-11 DI0-01N AI0-02N ILB-02

Hitachi HT98218 Circuit Board COM Version A Hitachi M-712E  

Hitachi HT94217 Circuit Board Version G1 Hitachi MU-712E  

Hitachi HT98218 Circuit Board Version A Hitachi MU-712E  

Hitachi IOTC-03N Circuit Board Hitachi MU-712E Main Body  

Hitachi IOTC-03N Circuit Board Hitachi MU-712E Main Body  

Hitachi HT94218A Circuit Board Version I1 Hitachi MU-712E