1)开关量的开环控制
开关量的开环控制是PLC的基本控制功能。PLC的指令系统具有强大的逻辑运算能力,很容易实现定时、计数、顺序(步进)等各种逻辑控制方式。大部分PLC就是用来取代传统的继电接触器控制系统。
(2)模拟量闭环控制
对于模拟量的闭环控制系统,除了要有开关量的输入输出外,还要有模拟量的输入输出点,以便采样输入和调节输出实现对温度、流量、压力、位移、速度等参数的连续调节与控制。目前的PLC不但大型、中型机具有这种功能外,还有些小型机也具有这种功能。
(3)数字量的智能控制
控制系统具有旋转编码器和脉冲伺服装置(如步进电动机)时,可利用PLC实现接收和输出高速脉冲的功能,实现数字量控制,较为先进的PLC还专门开发了数字控制模块,可实现曲线插补功能,近来又推出了新型运动单元模块,还能提供数字量控制技术的编程语言,使PLC实现数字量控制更加简单。
(4)数据采集与监控
由于PLC主要用于现场控制,所以采集现场数据是十分必要的功能,在此基础上将PLC与上位计算机或触摸屏相连接,既可以观察这些数据的当前值,又能及时进行统计分析,有的PLC具有数据记录单元,可以用一般个人电脑的存储卡插入到该单元中保存采集到的数据。PLC的另一个特点是自检信号多.利用这个特点,PLC控制系统可以实现白诊断式监控,减少系统的故障,提高系统的可靠性。
我们充分利用了Maxim强大的专利技术整合,依据我们在模拟集成领域的长期积累的经验,开创出通向工业4.0的新道路,”Maxim Integrated业务管理部总经理Jeff DeAngelis表示:“Pocket IO是一款适用于设计师的开发平台,展示了我们完备的工业通信和电源技术,包括强大的IO-Link®智能传感器技术。”
“对于许多公司来说,工业4.0不再是‘未来趋势’,而是其战略及研发计划的核心,”普华永道(PwC)近的一份报告中称:“实际上,35%的企业正在采用工业4.0应用,预计在接下来5年内的收入增长将超过20%
APPLIED MATERIALS 3860-01596 TBG FLEX .25ID X 50FT NORPRENE
APPLIED MATERIALS 3860-01713 TBG MCR 1/4OD X 1/8ID 42' TWIN URETHANE
APPLIED MATERIALS 3870-00016 VALVE PNEU DIAPH NC 3PORT-B 1/4-TS/FVC
APPLIED MATERIALS 3870-00017 VALVE PNEU DIAPH NC 3PORT-C 1/4-TS/FVCR/
APPLIED MATERIALS 3870-00057 VALVE ASSY PNEU DIAPH 2WAY 125PSIG NC 1/
APPLIED MATERIALS 3870-00060 VALVE 1-WAY FLOW CONTROL G3/8
APPLIED MATERIALS 3870-00118 PNEUMATIC VALVE
APPLIED MATERIALS 3870-00143 VALVE DBL AIR PILOT INLINE 5/3 CYL OPEN
APPLIED MATERIALS 3870-00145 VLV 2-WAY NC 3/8 FT (SG4-C2-6F)
APPLIED MATERIALS 3870-00154 VALVE SLIT DBI. ACT
APPLIED MATERIALS 3870-00155 VALVE DIRECT ACTING NO 1"FIP PVC
APPLIED MATERIALS 3870-00203 VALVE PNEU DIAPH NC 1/2VCR-M/F SST
APPLIED MATERIALS 3870-00249 VALVE PNEU RESRTICTED
APPLIED MATERIALS 3870-00281 VALVE PNEU N/C 1/4FPT
APPLIED MATERIALS 3870-00293 VALVE ISOLATION VACUUM IN-LINE KF-50 NC
APPLIED MATERIALS 3870-00321 VALVE SOL VAC 24VDC 1/8NPT
APPLIED MATERIALS 3870-00329 VALVE ASSY PNEU DIAPH NC 125PSIG 1/4FVCR
APPLIED MATERIALS 3870-00340 3/2 VVE SINGLE SOLENOID 24V
APPLIED MATERIALS 3870-00374 VALVE FLOW CNTR 1.33GPM 1/2NPT-M/F BR
APPLIED MATERIALS 3870-00375 VALVE FLOW CNTR 3.33 GPM 1/2NPT-M/F BR
APPLIED MATERIALS 3870-00394 VALVE MNL DIAPH 1/2 FNPT SST
APPLIED MATERIALS 3870-00434 VALVE MNL LEVER DIAPH 3500PSIG 1/4VCR-F/
APPLIED MATERIALS 3870-00443 VALVE CHECK DISK TYPE 1/4PIPE-F/M CV SER CV-1-1544
APPLIED MATERIALS 3870-00452 VALVE PNEU DIAPH N/C 125PSIG 2PORT SURFA
APPLIED MATERIALS 3870-00453 VALVE PNEU DIAPH N/C 125PSIG 3PORT SURFA
APPLIED MATERIALS 3870-00458 VALVE MNL 3WAY 1/4FVCR/FVCR/TS"C"PATTER
APPLIED MATERIALS 3870-00483 VALVE, PS (SWAGELOK SS-62TS6-JK-10187)
APPLIED MATERIALS 3870-00484 VALVE, PS (SS-62TS6-JK-10188)
APPLIED MATERIALS 3870-00527 MANF VALVE 3 STATION W/2" SS 0-60PSI GAU
APPLIED MATERIALS 3870-00607 VALVE PNEU DIAPH N/C 140PSIG 1/4FVCR/TS/
APPLIED MATERIALS 3870-00623 VALVE PNEU DIAPH NO 1/4T-IN 1/4T-FEM-OUT
APPLIED MATERIALS 3870-00630 VALVE ASSY MNL DIAPH 250PSIG
APPLIED MATERIALS 3870-00642 SPEED CONTROLLER ASSY W/HOLDER 6STATION
APPLIED MATERIALS 3870-00682 VALVE ASSY PNEU DIAPH N/C 3PORT SURFACE
APPLIED MATERIALS 3870-00684 VALVE ASSY PNEU DIAPH N//O 2PORT SURFACE
APPLIED MATERIALS 3870-00686 VALVE ASSY MNL DIAPH 2PORT SURFACE-MNT 5
APPLIED MATERIALS 3870-00727 VALVE CHECK 3PORT 1-1/8C-SEAL SIDE CHECK
APPLIED MATERIALS 3870-00761 VALVE MNL ANGLE NW-25B 1.00PORT CHEMRAZ
APPLIED MATERIALS 3870-00777 VALVE,MANUAL,STOPCOCK,1/4TURN,1/4 FLARED
APPLIED MATERIALS 3870-00827 VALVE CHECK 3/4"NPT VITON-DIAPH PVDF
APPLIED MATERIALS 3870-00828 VALVE BALL 3/4" NPT VITON-SEAL PVDF
APPLIED MATERIALS 3870-00860 VALVE TURBO COOLING
APPLIED MATERIALS 3870-00860 VALVE TURBO COOLING
APPLIED MATERIALS 3870-00883 VALVE ASSY MECHANICAL LOTO CDA
APPLIED MATERIALS 3870-00961 VALVE GATE DBL ACTING PNEU WITH SHUTTLE
APPLIED MATERIALS 3870-00972 1/2" PVC TRUE CHECK SOC & THD (HAYWARD)
APPLIED MATERIALS 3870-00973 UPGRADE KIT, VAPOR RELIEF VALVE
APPLIED MATERIALS 3870-01004 VALVE SOL 3/8 2-WAY
APPLIED MATERIALS 3870-01007 VALVE PRESS 3/4
APPLIED MATERIALS 3870-01011 SPRING
APPLIED MATERIALS 3870-01011 SPRING
APPLIED MATERIALS 3870-01020 CHECK VALVE 1/4 SS-4C-TW-8
APPLIED MATERIALS 3870-01023 CHECK VALVE 1/4 SWAGELOK
APPLIED MATERIALS 3870-01032 VALVE SOL 3 WAY NO AIR 12VDC MANF MT 0
APPLIED MATERIALS 3870-01034 VALVE NEEDLE CONT 0-2000 PSI D
APPLIED MATERIALS 3870-01035 VALVE POPPET 3-WAY NCO-300PSI
APPLIED MATERIALS 3870-01043 VALVE METER 1/4 NUPRO B-4M