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编程设备服务处理的高速化。当扫描时间为数十毫秒时,几毫秒的编程工具和设备的服务处理时间不会带来什么问题。但是在执行1毫秒以下的控制任务时,就有必要大大缩短这个时间。所采用的方法是以多芯片并行处理的方式,由专门处理编程及服务的微处理器芯片执行这类处理,以减轻对执行控制程序的芯片的影响,让它只管执行顺控和逻辑运算。此外,为了提高服务处理的效率,缩短在现场读写程序的时间,以缩短操作时间,采用了高速的串行通信(大的波特率为115.2Kbps)以及将UCB口(大波特率达12Mbps)引入PLC的模块,从而实现与编程工具及设备之间通信的高速化,并允许同时使用这两个通信端口,由多人同时进行编程和调试。
提高外部设备的响应速度。在PLC内部实现高速化的同时,还要提高外部设备的响应速度,才能整体提高整个系统的能,为此,在缩短I/O模块的输入输出响应时间,提高模拟量输入输出模块的模-数和数-模转换时间,下了不少工夫,以求得系统整体的控制速度达到毫秒级以下。例如,在晶体管输出模块的输出电路中选用高能的晶体管,使响应时间加快50%;在直流输入模块中,其输入的时间常数回路采用**ASIC芯片,可通过编程软件选择输入模块的响应时间为1/5/10/20/70毫秒;为提高模拟量模块的转换时间,采用A/D或D/A的**芯片,是转换速度为原先的1/2—1/6。另外也通过开发**的处理器和通信**ASIC,缩短通信网络模块之间的通信链接的循环时间。
技术渗入PLC。技术渗入PLC是为了适应工厂控制系统和企业管理系统日益**结合的发展趋势;适应在控制层面让不同品牌的PLC之间,让PLC与DCS、SA等系统之间,能有效而足够快地交换数据的市场要求。它主要表现在:
Acuity Imaging Inc AS-MC10B VDU
Acula Technology Corp DAX1564 15" Chassie Mount VDU
Acula Technology Corp YEV_14 Acula Colour Monitor
Addi-Data PA311 Addi-Data PA311 PCB
Addison Addison 4 Addison 4 Pendant
Addison Addison LAN Controller Addison LAN Controller
Addison E-030338 Electronic Servo Valve PSU
Addison EL00211 Addison Serial ENC PCB
Addison EL2006R AX2426 MK3 Axis Card
Addison EL2011 CP40095 MK3 CPU Board
Addison EL2012R CMS1714 MK3 Comms Board
Addison Single Board controller Single Board controller
Ademco AMM9 Ademco Mono Monitor
Adlee Power AP4G3-75 Adlee Power 7.5Kw Inverter
Adtech Power Inc. CS2404-872 4 Output Switch Mode Power Supply
Advance AVE0519 Advance 3 Power Supply System
Advance ETD1K5VA007/01 Advance 1500VA UPS
Advance MG5-40C Adavnce 5 Volt 40 Amp Switch Mode Power Supply
Advance P350/026 Advance 5 Output Switch Mode Power Supply
Advance P350/748 Advance 4 Output Switch Mode Power Supply
Advance Highvolt OL400/803/01 Advance Highvolt EHT Power Supply
Advanced Energy Industries 3155017-002D Advanced Energy Industries Automatic Matching Unit
Advanced Motion Controls 25A20T AMC Brush Type PWM Servo Amplifier
Advanced Motion Controls B12A6F Brushless PWM Servo Amplifier
Advanced Motion Controls B15A8F Brushless PWM Servo Amplifier
Advanced Motion Controls BE25A20ACE Brushless PWM Servo Amplifier
Advanced Motion Controls BE25A20ACG Brushless PWM Servo Amplifier
Advanced Motion Controls INV-0056 Vector Servo Amplifier
Advanced Motion Controls PC3XC-EQ1 Advanced Motion Controls PCB
Advantech 610 Advantech Industrial Computer
Advantech AWS-8124T-T AWS-8124 with 12.1"TFT LCD Display
Advantech AWS-825B Advantech 14" Chassie Mount VDU
Advantech FPM-3150TVE Advantech VGA Display
Advel SPS-RQ3P1/2700-C017 Advel Power Supply
AEC A0536808 AEC PCB
AEC E5AX-VSS-AEC-320 A0535011
AEC S1010 UPS
AEG 029 147 628 AEG AM400/20 Servo Drive
AEG 029.141 367 AEG AM400/20 Servo Drive
AEG 029.143 630 AEG AM400/20 Servo Drive
AEG 029.147 611 AEG Servo Drive 17 Amp Power Supply
AEG 029.147 614 AEG Servo Drive Power Supply
AEG 029.147 630 AEG AM400/20 Servo Drive
AEG 029.147 638 AEG AM400/50 50A Servo Drive
AEG 140 AVI 030 00 AEG 8 Channel Analogue Input Module
AEG 140 AVO 020 00 AEG Modicon 4 Channel Analogue Output Module
AEG 140 DAI 540 00 Modicon 32 Channel 115VAC Input Module