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以PID模块为例,其中的基本数据有PV、SP、OP,采用数据表的传输方式,你必须先定义PV、SP、OP的数据地址为01、02、03,其它的站也以数据表的方式接收数据,但是01是什么数据?02是什么数据?必须通过数据定义表才能还原。数据表的管理方式烦琐易错,一个大型系统的上万点数据采用这个方式,平铺在数据表中进行管理,是非常可怕的。而NETWORK6000+DCS以模块为单位的结构化管理,将一个PID作为一个模块进行处理,要访问其PV值,首先访问其模块,以PID.PV的形式来管理。这就将所有平铺的数据,分类归属集中到一个个小盒子中,按模块.分量的方式进行管理,管理的效率大大提高。
PLC数据通讯交换的问题,主要源于PLC长期以来做为一个独立装置在发展,没有系统概念;而且主要应用在小型控制系统中,问题暴露得并不明显,所以发展较慢。目前也有一些大型PLC在这个方面有所提高,但是要达到DCS的水平还需要一个相当长的过程。
三、组态维护功能
组态维护功能包括逻辑组态、下载修改、运行调试、远程诊断等。
早期,PLC以梯形图为主,DCS以模块功能图为主。经过多年的发展,国际电工委员会通过IEC1131-3标准规定了五种编程语言,目前主流的DCS和PLC都表示符合这个标准,支持其中的几种或全部编程语言。从开发效率和程序可读性来考虑,模块功能图和顺序功能图越来越成为主要的编程方式,梯形逻辑和结构化文本成为了自定义模块的开发工具。大型PLC在组态方式上越来越像DCS,差距在逐渐缩小,而小型PLC仍然以梯形图为主。
DCS经过多年的发展,积累了大量的高级算法模块。例如NETWORK6000+具有的设备级模块,在一个模块中集中完成了面向设备的基本控制和故障报警功能,在网络通讯中也已此模块为单位进行传递,大大提高了软件开发的效率。一个设备极模块相当于0.5K的梯形图逻辑量,PLC要完成同样的功能,就要烦琐得多了。
在下载修改、运行调试、远程诊断方面,PLC缺乏解决方案。而DCS从一设计之初就是从系统需要的角度出发的,有着多年积累的完善的解决方案。以NETWORK6000+DCS为例,系统既可以在线修改控制策略,也可以在线下载控制策略,修改和下载过程中,对系统的正常运行没有影响。NETWORK6000+DCS有完善的虚拟DCS功能,不但可以用于组态逻辑的验证,而且能够构建成完整的虚拟DCS与模型相连,完成系统的仿真调试。NETWORK6000+DCS具有完善的安全措施,提供基于广域网的远程调试方案。
Mitsubishi HC-KFS410 (HCKFS410)
Mitsubishi HC203RBS (HC203RBS)
Berger Lahr VRDM 568/50 LNC (VRDM56850LNC)
Mitsubishi MR-J3-10B (MRJ310B)
Mitsubishi MDS-A-CR-22 (MDSACR22)
Lenze GKR04-2G-HAR-063-22-005-F (GKR042GHAR06322005F)
Lenze GKR04-2G-HAR-063-22-004-A (GKR042GHAR06322004A)
Lenze GKR04-2G-HAR-063-22-003-F (GKR042GHAR06322003F)
Kollmorgen 6SM37M-6000 Nr83207 (6SM37M6000NR83207)
Siemens 6FC5250-4BX10-3AH0 (6FC52504BX103AH0)
Siemens 1FK7032-5AK71-1SH0 (1FK70325AK711SH0)
Siemens 1FK6040-6AK71-1TG0 (1FK60406AK711TG0)
Indramat CLM CTA2 (CLMCTA2)
Mitsubishi MR-J3-20B (MRJ320B)
Indramat NFD02.2-480-016 (NFD022480016)
Mitsubishi HC-KFS053B (HCKFS053B)
Yaskawa SJDE-02APA (SJDE02APA)
Berger Lahr VRDM 391050/LWB00 (VRDM391050LWB00)
Berger Lahr VRDM 368/50 LWCO BRS368W130ACA (VRDM36850LWCO)
Siemens 6FX1125-7AA01 (6FX11257AA01)
Omron R88M-U10030HA (R88MU10030HA)
Mitsubishi MR-J3-40B (MRJ340B)
Mitsubishi MR-J2S-20A (MRJ2S20A)
Mitsubishi HC-KFS43 (HCKFS43)
Sanyo Denki U730T-002 (U730T002)
Mitsubishi HC-KFS053 (HCKFS053)
Mitsubishi MR-J2S-20B (MRJ2S20B)
Mitsubishi MR-J2-40B (MRJ240B)
Mitsubishi MR-J2-40A (MRJ240A)
Mitsubishi MR-J2-10B (MRJ210B)
Lenze MDS KSRS 056-23 (MDSKSRS05623)
Mitsubishi HC-KFS46-S13 (HCKFS46S13)
Mitsubishi HC-KFS43-S51 (HCKFS43S51)
Allen Bradley 2098-DSD-010-SE (2098DSD010SE)
Mitsubishi HF-KP43B (HFKP43B)
Yaskawa SGD-02BS-Y38 (SGD02BSY38)
Lenze 12.602.08.1.3D i25 (126020813D)
Lenze 12.602.08.1.1 i25 (126020811)
Yaskawa SGMAH-01AAF41D (SGMAH01AAF41D)
ELAU SB-S-01-64-EOKN (SB07040200511S0164EOKN)
Mitsubishi OSA104S2 (OSA104S2)
Yaskawa SGDM-01BDA (SGDM01BDA)
Yaskawa SGDA-02AP (SGDA02AP)
Festo CMMS-AS-C4-3A (CMMSASC43A)
Atlanta 58 43 915 (5843915)
Atlanta 58 43 909 (5843909)
Atlanta 58 43 905 (5843905)
Mitsubishi MR-J2S-70A (MRJ2S70A)
Berger Lahr IFE71/2DP0-DS/-QDI54/1-008KPP54 (IFE712DP0DS)
Omron TJ1-MC16 (TJ1MC16)
Siemens 6AR1302-0AF00-0AA0 (6AR13020AF000AA0)
Mitsubishi MR-J2S-40A (MRJ2S40A)
Mitsubishi MR-J2-40B-A15 (MRJ240BA15)
Omron TJ1-ML16 (TJ1ML16)
Yaskawa SGDS-01A31A (SGDS01A31A)
Indramat BZM01.1-01-07 (BZM0110107)
Yaskawa CNV-TC100C (CNVTC100C)
Siemens 6FX8002-5DS01-1DF0 (6FX80025DS011DF0)
Siemens 6FX1128-4BA10 (6FX11284BA10)
Siemens 6FX1124-6AD02 (6FX11246AD02)
Yaskawa SGMAH-A5AAAAC (SGMAHA5AAAAC)
ASR Servotron TSNM 150-6-01 (TSNM150601)
Siemens 6FX1126-1AA03 (6FX11261AA03)
Siemens 6FX1122-8BC01 (6FX11228BC01)
Siemens 6FX1121-2BB02 (6FX11212BB02)
Indramat TBM 1.1-20-W1/115 (TBM1120W1115)
Yaskawa UTOPH-81AVH (UTOPH81AVH)
Alpha Getriebebau SP75-M1-10E (SP75M110E)
Yaskawa SGDH-01AE (SGDH01AE)
Yaskawa SGDA-01VP (SGDA01VP)
Lenze SDSGARS063-22 (SDSGARS06322)
Omron R88D-UP04V (R88DUP04V)
Omron R7M-A10030-S1 (R7MA10030S1)
Mitsubishi MR-J2S-70B (MRJ2S70B)
Mitsubishi MR-J2S-40B (MRJ2S40B)
Mitsubishi MR-J2-70B-A27 (MRJ270BA27)
Allen Bradley MPL-A310P-HK22AA (MPLA310PHK22AA)
ICME ICME 0.18kW (ICME018KW)
Mitsubishi HF-KP43K (HFKP43K)
Mitsubishi HC-MFS73 (HCMFS73)
Mitsubishi HC-KFS73 (HCKFS73)
Lenze A2S130 (A2S130)
Omron R88M-U20030VA-S1 (R88MU20030VAS1)
Omron R88M-U10030VA-BS1 (R88MU10030VABS1)
Omron 3G3SV-BB002-E (3G3SVBB002E)
Parker ZETA83-135 (ZETA83135)
Yaskawa SGDM-04ADA (SGDM04ADA)
Siemens 6SN1123-1AA00-0BA0 (6SN11231AA000BA0)
Siemens 6SN1122-0BA12-0AA0 (6SN11220BA120AA0)
Berger Lahr 368/3L5SS0TB (3683L5SS0TB)
Mitsubishi MR-H60TN (MRH60TN)
Omron R88D-UP02HA (R88DUP02HA)
Indramat MKD025-B144-KG0-KN (MKD025B144KG0KN)
Mitsubishi MR-J2S-100A-S046 (MRJ2S100AS046)
Mitsubishi MR-J2S-70B-U004 (MRJ2S70BU004)
Mitsubishi MR-J40A (MRJ40A)
St?ber Antriebstechnik C002N0140ES44 (C002N0140ES44)
St?ber Antriebstechnik C002N0063ES44 (C002N0063ES44)
St?ber Antriebstechnik C002N0058ES44 (C002N0058ES44)
Mitsubishi MR-J2S-70B-U006 (MRJ2S70BU006)
Siemens 6SN1123-1AA00-0BA1 (6SN11231AA000BA1)
Siemens 6FX1126-5AA01 (6FX11265AA01)
Yaskawa SGDM-04ADA-Y360 (SGDM04ADAY360)
Kollmorgen 6SM 57S-3.000-426 Nr 90986 (6SM57S3000426)
Siemens 6FX1128-1BB00 (6FX11281BB00)
Siemens 6FX1126-7BA01 (6FX11267BA01)
Indramat TCM 1.1-04-W0 (TCM1104W0)
CMC PM MT3528-270CF-R (MT3528270CFR)
Indramat TBM 1.1-020-W1 (TBM11020W1)
Yaskawa SGDH-04AE (SGDH04AE)
Mitsubishi MR-J3-40BS (MRJ340BS)
Mitsubishi MR-J2S-100A (MRJ2S100A)
Mitsubishi MR-J2-60B (MRJ260B)
Mitsubishi MR-J10A-D33 (MRJ10AD33)
Mitsubishi MDS-B-SVJ2-20 (MDSBSVJ220)
Mitsubishi MDS-B-SVJ2-01 (MDSBSVJ201)
Mitsubishi MDS-B-SPM-110 (MDSBSPM110)
Yaskawa JEPMC-MC350 (JEPMCMC350)
Yaskawa JEPMC-IO350 (JEPMCIO350)
Mitsubishi HC-PQ23BK (HCPQ23BK)
Lenze EZN3A0088H024 (EZN3A0088H024)
Siemens 6SN1123-1AB00-0HA0 (6SN11231AB000HA0)
Siemens 6SN1123-1AA00-0AA1 (6SN11231AA000AA1)
Lust FIP31/0125-30AD2 (FIP31012530AD2)
Lust FIP20/0018-30BD1 (FIP20001830BD1)
Lust FIP11/0045-30AD2 (FIP11004530AD2)
St?ber Antriebstechnik C402O0700MO20 (C402O0700MO20)
Siemens 462 010.9080.221)
Siemens 462 010.9080.221)
Siemens 6FX1123-7AA02 (6FX11237AA02)
Siemens 6FX1118-8AC01 (6FX11188AC01)
Siemens 6FX1115-0AA02 (6FX11150AA02)
Siemens 6EV3054-0GC (6EV30540GC)
Parker PKC80M/CP0023 (PKC80MCP0023)
Siemens 6SN1123-1AA00-0DA2 (6SN11231AA000DA2)
Indramat TVM1.2-050-220/300-W0/220/380 (TVM12050220300W0220380)
Siemens 6SN1145-1AA00-0AA0 (6SN11451AA000AA0)
Omron R88M-U40030VA-S1 (R88MU40030VAS1)
Omron FND-X06H-SRT (FNDX06HSRT)
Mitsubishi M530MH-E BL-61361-01 (M530MHEBL6136101)
Siemens 77-964-2300 (779642300)
Siemens 6FM1680-3AA00 WS600G (6FM16803AA00)
Siemens 6FM1496-1BB10 (6FM14961BB10)
Siemens 6FC5247-0AA17-0AAFC52470AA170AA1)
Ingersoll Rand 93990034 (93990034)
Ingersoll Rand 93976389 (93976389)
Ingersoll Rand 93972701 (93972701)
Siemens 1FT5066-0AF01-1-Z (1FT50660AF011Z)
Indramat TDM 1.3-050-300-W1-000 (TDM13050300W1000)
Indramat DKC04.3-040-7-FW (DKC0430407FW)
Siemens 6SE7028-0EA87-2DA0 (6SE70280EA872DA0)
St?ber Antriebstechnik ES44 446339//1362565/000/000-010/2 (ES444463391362565)
St?ber Antriebstechnik ES44 446339//1362462/000/000-020/1 (ES4444633913624620000000201)
St?ber Antriebstechnik ES44 446339//1362462/000/000-010/1 (ES4444633913624620000000101)
Kollmorgen Digifas 7204-CAN (DIGIFAS7204CAN)
Mitsubishi MR-J3-100A (MRJ3100A)
Stromag FRP40/0024-60 (FRP40002460)
Siemens 6FX1126-6BB00 (6FX11266BB00)
Siemens 6FX1120-6BA01 (6FX11206BA01)
Mitsubishi MR-J200A-S12 (MRJ200AS12)
Berger Lahr WD05-008.05101 (WD0500805101)
OSAI KG8755 Indukey (KG8755)
ASR Servotron PNM15070001 (PNM15070001)
Mitsubishi MR-J200A (MRJ200A)