描述
PLC进行模拟量控制，要配置有模拟量与数字量相互转换的A／D、D／A单元。它也是I/O单元，不过是特殊的I/O单元。A/D单元是把外电路的模拟量，转换成数字量，然后送入PLC。D/A单元，是把PLC的数字量转换成模拟量，再送给外电路。
SYMBOL MOTOROLA DS3578-SR20005WR DS3578 DIGITAL SCANNER
Motorola Symbol Health Care Scanner DS6878-TCBU0100ZWR
SYMBOL MOTOROLA MC7090-PK0DJQFA7WR 2D BARCODE WIFI NICE
Complete kit includes battery, stylus, cables & charger
One-day shipping available
Motorola Symbol LS3578 Bar Code Scanner BRAND NEW
Expedited shipping available
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SYMBOL, MOTOROLA MC7094-PKCDJQHA8WW, WM5, WIFI, GSM !!!
MC7094 + USB CHARGING AND COMMUNICATION CABLE KIT
SYMBOL, MOTOROLA MC7094-PKCDJQHA8WR, WM5, WIFI, GSM !!!
MC7094 WITH USB CHARGING AND COMMUNICATION CABLE KIT
Expedited shipping available
SYMBOL MOTOROLA DS3578-HD20005WR DS3578 DIGITAL SCANNER
SYMBOL MOTOROLA DS3578-SR20005WR DS3578 DIGITAL SCANNER
Symbol Motorola MC5590 1D Scan Numeric Key
