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3)处理速度提高,每个点的平均处理时间从10μs左右提高到1μs以内。
4)编程容量增大,从几K字节增大到几十K,甚至上百K字节。
5)编程语言多样化,大多数使用梯形图语言和语句表语言,有的还可使用流程图语言或语言。
6)增加通信与联网功能,多台PLC之间能互相通信,互相交换数据,PLC还可以与上位计算机通信,接受计算机的命令,并将执行结果告诉计算机。通信接口多采用RS-422/RS-232C等标准接口,以实现多级集散控制。
目前,为了适应不同的需要,进一步扩大PLC在工业自动化领域的应用范围,PLC正朝着以下两个方向发展。其一是低档PLC向小型、简易、廉价方向发展,使之广泛地取代继电器控制;其二是中、PLC向大型、高速、多功能方向发展,使之能取代工业控制微机的部分功能,对大规模的复杂系统进行综合性的自动控制。
在数控机床采用PLC代替继电器控制,使数控机床结构更紧凑,功能更丰富,响应速度和可靠性大大提高。在数控机床、加工中心等自动化程度高的加工设备和生产制造系统中,PLC是不可缺少的控制装置。
YASKAWA ELECTRIC CIRCUIT JASP-AZ001B
Indeeco Controls 202-S95-M10-2S-I
General Electric GE Board Card DS3800DMEB1B1B 6BA03
FISHER CIRCUIT BOARD CARD CL7652X1-A2 41B1841X022-AB
MOORE CIRCUIT BOARDS 15821-1 15821-1-11
SEALED AIR CORPORATION 1164BN-04
Bailey NC0M03 Enhanced
Westronics Printer Interface AC100352-01
Westronics Board Card CB100340-01
CUTLER HAMMER, MITAC, MSC-251-CH, D223582
HONEYWELL MEASUREX PC BOARD GRAPHICS PROCESSOR GP60 05327603 REV AC1
HONEYWELL MEASUREX BOARD 05347100 08507900 209111 REV A
STROMBERG CIRCUIT BOARD CARD 5760556-1R SAMC 1 SUP 57149809 RQ
STROMBERG CIRCUIT BOARD CARD 5760556-1M SAMC 1 SUP 57149809
STROMBERG CIRCUIT BOARD CARD 5760539-1E SAMC 1 SUP 57151847KD
STROMBERG CIRCUIT BOARD CARD 5760556-1K SAMC 1 SUP 57149809
Allen Bradley Board Card 103620 Rev 12 M003563549
Allen Bradley Board Card 103620 Rev 09 M003352760
Bently Nevada 3300 Dual Accelerometer 3300/25 3300/25-05-03-05-00-00-01-00
BAILEY NETWORK 90 MULTI-FUNCTION CONTROLLER NMFC02
GE GENERAL ELECTRIC DS3800DLIA DS3800DLIA1E1E 6BA06
ABB ASEA Circuit Board Card 2668171-15/3 YM321001-Z
ABB ASEA Board Card 2668 170-318 YM321001-AN
Intel Hurco Graphics Circuit Board PBA 147013-005, 34623219R, PBA 146141-004
GE GENERAL ELECTRIC DS3800 DS3800DLIA1D1D 6BA05
NEW GE GENERAL ELECTRIC DS3800 DS3800DLCA1A1C 6BA03
GE General Electric 44A399750-G01 PS105 44B399271-001
GENERAL ELECTRIC CIRCUIT BOARD CARD IC3600SCBN2A
MICROFAST PROCESSOR MODULE ASY--M4000-PRC
PROLOG CIRCUIT BOARD CARD 7804A-S1173 D168762 REV 001
NEWE SA POWERWARE EXIDE NW4021A NW4021 A CH-6572 E28/02
NEWE SA POWERWARE EXIDE NW4021A NW4021 A CH-6572, Rom 142/03
NEWE SA POWERWARE EXIDE NW4021A NW4021 A CH-6572 11/03 47/03
CONTROL CHIEF CORP BOARD CARD 8002-4000-A 8002-4001
GE IC3600 IC3600LIVF1A IC3600LIVF
GE IC3600 IC3600SSLD1F1B IC3600SSLD
Cincinnati Milacron 3-533-0700G REV B PC Board 39920468
HONEYWELL 51304487 100LG 51120578-101
ALLEN BRADLEY AB CIRCUIT BOARD CARD 80165-018-51
TRANSMATION INC. CIRCUIT BOARD CARD 496600 496610-310D
NEWE SA POWERWARE EXIDE CIRCUIT BOARD CARD 101072737 S7300 118302611 A
GE Fanuc Processor IC600CM554A 44A717539-G01
Bristol Babcock I/O 392003-02-3
Siemens Board Card 570 515.9001.00
GENERAL ELECTRIC GE CIRCUIT BOARD IC600CB516B
NEWE EXIDE MK II U INVERTER GATE 118302461C
GE IC3600 VIB. ALARM IC3600SVDE1 IC3600SVDE1B1B
NEWE EXIDE INVERTER GATE FIRING MODULE 118302605B 101072720