描述
加强PLC联网通信的能力,是PLC技术进步的潮流。PLC的联网通信有两类:一类是PLC之间联网通信,各PLC生产厂家都有自己的专有联网手段;另一类是PLC与计算机之间的联网通信,一般PLC都有专用通信模块与计算机通信。为了加强联网通信能力,PLC生产厂家之间也在协商制订通用的通信标准,以构成更大的网络系统,PLC已成为集散控制系统(DCS)不可缺少的重要组成部分。
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SYMBOL MOTOROLA LS4208-SBZU0300ZR Kit: USB Power +, 7ft
DS6707 Symbol Barcode Scanner by Motorola
SYMBOL MOTOROLA LS9208-SR11007NNWR LS9208I:HF NO STAND,
SYMBOL MOTOROLA LS4208-PR20007ZZR SCNR:MULTI-INTRFCE,PD
SYMBOL MOTOROLA LS9208-SR11001NNWR LS9208i CR WHITE,NO
MOTOROLA-SYMBOL MC9062 HAND HELD MOBILE COMPUTER
Motorola Symbol Ls 4208 Bar Code Reader – Handheld Bar
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