这样-一个未经许可的人也可以访问该PLC.这些钥匙的替代品可以购买，其购买编号为44A736756-G01.这个产品包包含了三把CPU的钥匙，所有的350-374型CPU使用的都是同一型号的钥匙.当然，您可以不使用这个钥匙开关保护功能，将钥匙开关置于OFF的位置，并且不去改变钥匙开关的默认属性(失效)，这样，您就不需要使用一把钥匙去访问PLC.

GOODYEAR 2497 MULT-PURPOSE HOSE, 3/8″X300′,

WAGO 750-403 I/O MODULE LOT OF 2 IN BAG

LINCOLN ELECTRIC D-EG2404 E2 PREMIUM EFFICIENCY AC MOTO

OHIO GEAR U2325FMC140 UNILINE 2000 GEAR REDUCER, RATIO

DAYCO JIFFY 7212BL AIR HOSE 200’X?”,

TORRINGTON / FAFNIR 2MM9107WI DUL SUPER PRECISION BEARI

TORRINGTON / FAFNIR 2MM9107WI DUM SUPER PRECISION BEARI

WESTLOCK 2007X-BY-E10 VALVE POSITION MONITOR, NNB

MITSUBISHI ELECTRIC 200-240V INPUT 1/2HP INVERTER AC DR

ALLEN BRADLEY 110/115-120VAC COIL NEMA SIZE 0 REVERSING

DWYER A3001-OLS-HP PHOTOHELIC SWITCH GAUGE, NIB SEALED

EMHART WARREN, PK560F, WELDING GUN, 19.66′

DWYER A3001-OLS-HP-HJ DIFFERENTIAL PRESSURE SWITCH/GAGE

OMRON SYSMAC D/A UNIT CS1W-DA041

FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2901-0480/?01A

DAYKIN ELECTRIC APFS-07 AUXILIARY POWER DISCONNECT, 500