1756-dnb 1756-l55m22
1756-l55m22
计数器的工作过程顺序如图4-46所示
图4-46 计数器工作过程
1) 当plc 为run方式时,k20被送入预置值寄存器sv100中,如果此时复位行为off,则sv100中的k20又被送到经过值寄存器ev100中。
2) 每检测到一个计数器逻辑行x0的上升沿(off→on的状态变化),ev100中的数值减1计数。
3) 当ev100中的数值减至“0”时,计数器c100的触点动作并保持,即常开触点闭合,常闭触点断开。
4) 当检测到复位逻辑行x1的上升沿(即off→on)时c100的各触点复位。再检测到复位行x1的下降沿(on→off状态变化)时sv100中的数值k20再次传送到ev100中准备计数。
5) 在计数过程中,若复位行发生off→on状态变化则ev100被复位为“0”,但c100的触点不动作。直到复位行由on→off时刻,sv100中的数值k20再次送到ev100中。
指令f120是一个不带进位右移指令,即:对数据字进行右移时,对高位进行补零。k8表示右移8位。指令f0是一个字传送指令,就是将一般数据寄存器dt10内的数据传送到一般数据寄存器dt1。上述程序段的目的就是在开机时将掉电保持数据寄存器dt1655内的数据分成两个被调整数据。
4863 pump
fuji circuit breaker eg103a 100a 200v 3 pole
a06b-6047-h002 fanuc
shimadzu hplc pump lc -8a preparative liquid
biotage quad 1 pump cartridge collector uv detector
carl zeiss standard inspection microscope 467065-9914
sigma microplate reader eia multi-well fluorescence
savant speed vac plus sc 210a speedvac
pharmacia chromatography controller lcc-500 pump p-500
mj research peltier cycler thermal controller ptc-100
jal recycling preparative hitachi hplc pump l-7150
buchi evaporator rotavapor r124 r-124 rotary bath glass
agilent fraction collector xy autosampler hplc system
hp 1050 autosampler hplc lc chromatography 79855a tray
braunsonic sonifier cell disruptor homogenizer 1510
hp 1050 autosampler hplc lc chromatography liquid
eppendorf refrigerated centrifuge 5403 rotor 250 ml 1l
branson sonifier cell disruptor w-350 homogenizer horn
hp 1050 uv detector multivawelength variable 79853a
baumer electric fhdm16n5001/s14 nsfp fhdm16n5001s14 baumer electric fpdm-15p3003/ks9 nsfp fpdm15p3003ks9 baumer electric feg-12.24.15 nsfp feg122415 baumer photo electric fhds 15p5002/x2 fhds15p5002/x2 baumer electric fhdk 26p5001/s14 nspp fhdk26p5001s14 baumer electric mycom-e75/500 nsfp mycome75500 baumer electric feg-14.24.25 nsfp feg142425 baumer electric: iff 08.24.35/l2 proximity sensor baumer electric proximity switch~ifrm 05p1501/s35l baumer electric fhdm16n5001/s14 nspp fhdm16n5001s14 baumer electric fpdm16n5101/s14 nsfp fpdm16n5101s14 new baumer electric izrm 30n1501 sensor baumer electric fhdk-10p3101/ks35 nspp fhdk10p3101ks35 baumer electric iff 22.23.16/l ac proximity switch baumer electric switch igf 12.24.35/l 10 to 30 volt new baumer electric fvdm-15n5103/s13 nsfp fvdm15n5103s13 baumer electric isv-220.50 uspp isv22050 baumer electric sdpf-28r71 uspp sdpf28r71 baumer electric encoder bav 0g.24p4096-6-5 ch-8501 new baumer electric precision sensor fsf100a2002 baumer electric proximity switch fedm 08p1002-s35l !new