1747-OCPCI6/ABPLC智能制造

在图（a） 直流输入接口电路中，当输入开关闭合时，光敏晶体管接收到光信号，并将接受的信号送入内部状态寄存器。即当现场开关闭合时，对应的输入映像寄存器为“1”状态，同时该输入端的发光二极管(LED)点亮；当现场开关断开时，对应的输入映像寄存器为“0”状态。光电耦合器隔离了输入电路与PLC内部电路的电气连接，使外部信号通过光电耦合变成内部电路能接收的标准信号。 
    图（b）交流输入接口电路中，当输入开关闭合时，经双向光电耦合器，将该信号送至PLC内部电路，供CPU处理，同时发光二极管（LED）点亮。 1747-M3 EEPROM MEMORY,4K
 1747-M4 EEPROM MEMORY,4K
 1747-M5 ADAPTER SOCKET-PKG. 5
 1747-NP1 WALL MOUNT PWR SUPPLY 120V AC INPUT
 1747-NP2 GLOBAL DESK TOP PWR SUPPLY 85/285 V AC IN
 1747-OCAPINT WINDOWS NT API FOR 1771-OC MODULE
 1747-OCDPDE OC DOC SET/GERMAN
 1747-OCDPES OC DOC SET/SPANISH
 1747-OCDPFR OC DOC SET/FRENCH
 1747-OCDPIT OC DOC SET/ITATIAN
 1747-OCDR16 16 MB DRAM FOR 1747 OPEN CONTROLLER
 1747-OCDR32 32 MB DRAM FOR 1747 OPEN CONTROLLER
 1747-OCDR4 4 MB DRAM TO 1747 OPEN CONTROLLER
 1747-OCENET ETHERNET(10/100 BASET)MODULE
 1747-OCF 266 MHZ OPEN CONTROL PROCESSOR

 1747-OCFAN1 FAN ASSEMBLY FOR 1747 OPEN CONTROLLER
 1747-OCIDE1 ATA CARRIER CARD/IDE DRIVE EXPANDER MODULE
 1747-OCIDE25 2.5 IDE DRIVE EXPANSION MODULE
 1747-OCKTX SINGLE CHANNEL 1-B COMM OPTION MODULE
 1747-OCKTXD DUAL CHANNEL A-B COMM OPTION MODULE
 1747-OCP252 PARALLEL ADAPTER CABLE
 1747-OCPCI2 2-SLOT PCI BUS FOR 1747 OPEN CONTROLLER
 1747-OCPCI3 3-SLOT PCI BUS FOR 1747 OPEN CONTROLLER
 1747-OCPCI4 4-SLOT PCI BUS FOR 1747 OPEN CONTROLLER
 1747-OCPCI5 5-SLOT PCI BUS FOR 1747 OPEN CONTROLLER
 1747-OCPCI6 6-SLOT PCI BUS FOR 1747 OPEN CONTROLLER
 1747-OCPCM1 PCMCIA OPTION MODULE
 1747-OCPCM2 PCMCIA OPTION MODULE WITH CARD & SOCKET
 1747-OCS92 SERIAL ADAPTER CABLE
 1747-OCSBC SERIAL BOOT CABLE
 1747-OCSDCK FLASHDRIVE CABLE KIT FOR 1747 OPEN CONTROLLER
 1747-OCTS OPEN CONTROLLER FAMILY SUPPORT CONTRACT
 1747-OCUS OPEN CONTROLLER FAMILY UPDATE SERVICE
 1747-OCVGA1 VGA OPTION MODULE FOR 1747 OPEN CONTROLLER PCI BUS
 1747-OCVGAE COMBO OPTION MODULE
 1747-PCIAA 1747 PCI BUS INTERFACE KIT
 1747-PCIAB 1747 PCI BUS INTERFACE KIT
 1747-PCIBA 1747 PCI BUS INTERFACE KIT
 1747-PCIBB 1747 PCI BUS INTERFACE KIT