1771-NR 使能=1,定时器位=1,计数器复位(清零)。使能由1到0负跳变,计数器开始计数,到设定值时(停止计数),定时器位=0。如下图:
图1:使能=1时,TOF(T38)的触点动作图
图2:使能断开后,计数到设定值后,TOF(T38)的触点动作图(其中T38常开触点是在使能由1到0负跳变后计数器计时到设定值后变为0的)
TONR 使能=1,计数器开始计数,计数到设定值时,计数器位=1。使能断开,计数器停止计数,计数器位仍为1,使能位再为1时,计数器在原来的计数基础上计数。
以上三种计数器可以通过复位指令复位。
正交计数器 A相**B相90度,增计数
B相**A相90度,减计数
当要改变计数方向时(增计数或减计数),只要A相和B相的接线交换一下就可以了。
二、译码指令和编码指令:
译码指令和编码指令执行结果如图所示:
DECO是将VW2000的第十位置零(为十进制的1024),ENCO输入IN**位为1的是第3位,把3写入
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VB10(二进制11)。
三、填表指令(ATT)
S7-200填表指令(ATT)的使能端(EN)必须使用一个上升沿或下降沿指令(即在下图的I0.1CVDW INTERLOCK ASSY PCB 03-810748-00 03-10748-00
DIAGNOSTIC HUB CT-N806
DLCM POWER CONTROL ASSY C2-DLCM-S0790
DLCM-LITE LOCAL POWER BOX B/O BOARD 02-021383
FLAT SCREEN NATIONAL DISPLAY SYSTEMS DM-3S12/ZN DM-3S12/ZN
GAS 429 LAMP TRAY A95-053-02
GAS BOX PCB 03-10738-00
GAS MAMIFOLD
I/O CONTROLLER 27-10157-00
I/O CONTROLLER 27-810157-00
INDEXER END EFFECTOR 15-055682-00
INDEXER END EFFECTOR 15-110374-01
IO CONTROLLER 27-10157-00
KEYENCE ASSY 02-834711-00
LEFT LOADLOCK INTFC PCB
LOAD LOCK DOOR LEFT
LOAD LOCK DOOR RIGHT
LOCD LOCK DOOR ACTUATOR LEFT ASSY
MAGNATRAN MTR5 001-7600-07
MKS BARATRON 690A11TRA
MOTION CONTROLLER ANIMATICS MODEL CDP-2407-02 27-050014-02 REV D
MODULE CONTROLLER P100 02-034310-00
P100 SYSTEM CONTROLLER 02-028522-00
PLATE MOUNTING PED 16-032609-00
PNEUMATIC PANEL 02-810546-00
PNEUMATIC SOLENOID ASSY 02-828715-00
POWER & SIGNAL INTERFACE BOX 03-10766-00
RF MATCH NETWORK ASSY
RIGHT LOADLOCK INTFC PCB DLCM-S 03-034720-00
ROBOT ARM 001-5867-01
SETRA DATUM 2000 SETRA DATUM 2000 METER
SHOWERHEAD 16-033931-00?? ??16-033931-00
SPINDLE CLAMP AND RETAINER TONG 15-052621-00 & 15-052620-00
TM INTERFACE BD DLCMLITE 03-034716-00
TYLAN GENERAL ADAPTORR MODEL AC2 27-053667-00
VAT VALVE 14040-PE44-AAL2 14040-PE44-AAL2
VAT VALVE ASSY 02-115274-00
VOLGAN SX100U-15S SX100U-15S
VAT VALVE ASSY 02-115275-00
VOLGEN ESK70U-1212A ESK-1212A
VOLGEN ESK70U-1515 ESK70U-1515
VOLGEN EXU-156R6 EXU-156R6
VOLGEN EXU-246R3 EXU-246R3
200MM CHUCK
BASEFLEX EMC 710-679958-00
CABLE FLEX 40 POSITION 16"
CABLE FLEX 40 POSITION 22"