描述
根据统计资料表明：在PLC控制系统的故障中，CPU占5%，I/O接口占15%，输入设备占45%，输出设备占30%，线路占5%。前二项共20%故障属于PLC的内部故障，它可通过PLC本身的软、硬件实现检测、处理；而其余80%的故障属于PLC的外部故障。因此，PLC生产厂家都致力于研制、发展用于检测外部故障的专用智能模块，进一步提高系统的可靠性
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SYMBOL MOTOROLA AP-7131-60020-WR AP-7131:SINGLE RADIO 1
Symbol or Motorola MC9060 G with cradle & bat MC9060-G
WIN CE warrnty included
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Symbol / Motorola MC7094-PUCDJRHA8WR with warranty
pre-owned with warranty MC7094-PUCJRHA7WR
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Motorola Symbol MC9090-KU0HJFFA6WR ethernet cradle 2GB
MOTOROLA SYMBOL MC3090 BARCODE SCANNER WIFI PDA MC3000
MOTOROLA MC3000 SYMBOL BAR CODE SCANNER MOBILE COMPUTER
