描述
高、中档的PLC,还开发有NC单元,或运动单元,可实现点位控制。运动单元还可实现曲线插补,可控制曲线运动。所以,若PLC配置了这种单元,则完全可以用NC的办法,进行数字量的控制。
新开发的运动单元,甚至还发行了NC技术的编程语言,为更好地用PLC进行数字控制提供了方便。
3.4用于数据采集
随着PLC技术的发展,其数据存储区越来越大。如德维森公司的PLC,其数据存储区(DM区)可达到9999个字。这样庞大的数据存储区,可以存储大量数据。
数据采集可以用计数器,累计记录采集到的脉冲数,并定时地转存到DM区中去。
数据采集也可用A/D单元,当模拟量转换成数字量后,再定时地转存到DM区中去。
PLC还可配置上小型打印机,定期把DM区的数据打出来。
PLC也可与计算机通讯,由计算机把DM区的数据读出,并由计算机再对这些数据作处理。这时,PLC即成为计算机的数据终端。
电力用户曾使用PLC,用以实时记录用户用电情况,以实现不同用电时间、不同计价的收费办法,鼓励用户在用电低谷时多用电,达到合理用电与节约用电的目的。
3.5用于信号监控
PLC自检信号很多,内部器件也很多,多数使用者未充分发挥其作用。
其实,完全可利用它进行PLC自身工作的监控,或对控制对象进行监控。
这里介绍一种用PLC定时器作看门狗,对控制对象工作情况进行监控的思路。
如用PLC控制某运动部件动作,看施加控制后动作进行了没有,可用看门狗办法实现监控。具体作法是在施加控制的同时,令看门狗定时器计时。如在规定的时间内动作完成,即定时器未超过警戒值的情况下,已收到动作完成信号,则说明控制对象工作正常,无需报警。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
AE Advanced Energy Remote Plasma Source 3151801-001F
AE ADVANCED ENERGY MDX-10K POWER SUPPLY 3152012-043Z
AE ADVANCED ENERGY RFDS-A RF GENERATOR
AE ADVANCED ENERGY PE-POWER PACK 3157512*REFURBISHED 1
AE ADVANCED ENERGY PE-POWER PACK 3157512*REFURBISHED 2
AE Advanced Energy MCIS 12cm Multi-Cell Ion Source Gun
AE ADVANCED ENERGY PE-POWER PACK 3157512
AE ADVANCED ENERGY PE-POWER PACK 3157512
AMAT 0260-20417 AE Advanced Energy 3156024-105B PDX-500
AE ADVANCED ENERGY PE-POWER PACK 3157512
AE ADVANCED ENERGY PE-POWER PACK 3157512
AE ADVANCED ENERGY NAVIGATOR RF MATCH 3155166-002 A
Advanced Energy AE 3155039-000A TCM
Advanced Energy Pinnacle DC Magnetron Power Supply AE
Advanced Energy Apex 3013 RF Plasma Generator 3kW AE
AE Advanced Energy MDX-5K Power Supply 5kW
AE ADVANCED ENERGY HFV 8000 RF GENERATOR 8KW/FREE SHIP
AE ADVANCED ENERGY PE-10/20K 3157515 AC POWER SOURCE
AE Advanced Energy Rapid F 6 kW Remote Plasma Source
Advanced Energy MDX-II 30K Power Supply
AE ADVANCED ENERGY RFG 3001 GENERATOR
Advanced Energy(AE)3152012-002W MDX Magnatron Drive
AE ADVANCED ENERGY DC MAGNETRON PINNACLE 3152326-000B
AE Advanced Energy RFG 1250 RF
AE Advanced Energy 3153107-000D
AE Advanced Energy Apex 1500/13 RF Generator,1500 Watt
ADVANCED ENERGY AE INDUCTIVELY COUPLED PLAMA SOURCE ICP
AE Advanced Energy LM-2.5K RF Match Box Load Matching
AE ADVANCED ENERGY Model MDX-10K SLAVE
Advanced Energy 2012-028-01 AE MDX-10K DC Power Supply
Advanced Energy AE RFG 2000-2V RF Generator 3155053-007
AE Advanced Energy MDX-20K Master 3152223-003-Y,
AE Advanced Energy 3153110-001
AE Advanced Energy MDX-20K Master,AE Model 3152223-003
AE Advanced Energy MDX-10K Master,AE Model 3152012-041
Advanced Energy MDX-10K Slave,AE Model 3152012-043 X
AE Advanced Energy PDX 900-2V Generator 3156024-031B
AE Advanced Energy HFV 8000 RF Generator 3155083-109
AE ADVANCED ENERGY 3157512-006D PE-POWER PACK AC PLASMA
AE Advanced Energy RFG 1251 RF Generator 3155107-001 B
AE Advanced Energy RFX 2500 RF Generator 3155011-000
Advanced Energy PDW 600,AE 3156014 Lam#853-15516-003
Advanced Energy PDW 2200,AE 3156011 Lam 853-15516-002
Advanced Energy PDW 2200,AE 3156011 Lam 660-015516-004
AMAT AE Advanced Energy 3152412-223 PINNACLE 20K
AMAT AE Advanced Energy 2223-003-Y MDX-20K 1140-01088
AMAT AE Advanced Energy 2012-043-Z MDX-10K SLAVE
Advanced Energy MDX-10K AE Magnetron DC 3152194-008 MRC
Advanced Energy MDX-20K Delta Master 20K 3152194-013 AE
Advanced Energy Remote Plasma Source,AE 3151801-004
Advanced Energy 3156012-002,AE PDP 2500,Untested
AE Advanced Energy AMAT 3152412-233 PINNACLE GENERATOR
NEW RFPP Advanced Energy Harmonic Filter 1 kW 350kHz AE
Advanced Energy AE RFG/AZX Control Panel 3155050-000A
AMAT AE Advanced Energy 3152412-223 PINNACLE 20K
AE Advanced Energy APEX 3013 RF Generator AMAT Working
Advanced Energy AE GenCal RF Power Head PMH 400/2200
AE ADVANCED ENERGY RFG 1250 RF GENERATOR 3155027-000N
Advanced Energy(AE)3152194-008X Slave Generator
Advanced Energy(AE)2194-008-S Slave Generator
Advanced Energy AE RFPP LF-5 500W RF Generator
Advanced Energy AE HTCM RF Match AZX Control Module
AE Advanced Energy AZX90 RF Match 3155031-011B AMAT
AE ADVANCED ENERGY ASPECT 2027 RF GENERATOR REV B00 2kW
Advanced Energy AE Multifunction RF Match 3156035-100A
AE Advanced Energy MDX-L6 Magnetron
AE HFV 8000 RF Generator Advanced Energy
RFPP RF5S RF Generator RF 5S Plasma Advanced Energy AE
AE Advanced Energy 12cm MCIS Multi-Cell Ion source gun
AE Advanced Energy 94cm Linear Ion Beam Source LIS 84cm
AE ADVANCED ENERGY 3157512-006C PE-POWER PACK AC PLASMA
AE ADVANCED ENERGY MDX 5K M/N 3152011-054H 5kW
Advanced Energy HFV-8000 8kW RF Generator Refurb
Advanced Energy PDX 500 RF Plasma Generator NEW(AE)
Advanced Energy PDX 900-2V RF Plasma Generator(AE)PDX
Advanced Energy PDX 900-2V RF Plasma Generator(AE)PDX