描述
定时器,可进行定时控制。定时值可任意设定。定时器有多少,设定范围有多大,设定值的分辨率又是多少,这些都代表定时器件的性能。计数器,可进行计数,到达某设定计数值可发送相应信号。可进行什么样的计数,计数范围多大,怎么设定,有多少计数器,则是PLC计数器性能的代表指标。
SYMBOL, MOTOROLA 4 SLOT CRADLE WT4090, WT4070 ETHERNET
SYMBOL MOTOROLA LS4208-SWZU0100ZR LS4208 WHITE SCANNER
SYMBOL MOTOROLA LS4208-SBZU0100ZR LS4208 BLACK SCANNER
Motorola Symbol Barcode Scanner PDT3416 New 3416
Motorola Symbol MC9063-S Barcode Scanner Verizon *New*
NEW Motorola Symbol LS 4208 Bar Code Reader
Expedited shipping available
SYMBOL MOTOROLA LS4208-SBZK0200Z KIT: KEYBOARD PS/2, 9F
SYMBOL MOTOROLA LS9203-SR11007NSWR LS9203I:HF STAND,TWL
SYMBOL MOTOROLA LS4208-SBZU0100ZR LS4208 BLACK SCANNER
SYMBOL MOTOROLA LS4208-SWZU0100ZR LS4208 WHITE SCANNER
NEW Motorola Symbol LS 4208 Bar Code Reader
Expedited shipping available
SYMBOL MOTOROLA LS4208-SWZK0100ZR LS4208 WHITE SCANNER