关键在于要把用***语言编写的程序转换成助记符语言，或直接转换成PLC所能识别的机器语言。从根本上讲，只要能实现这个转换的，什么***语言都可以。而编写这个转换的软件工作量很大，当然应由有关厂家开发与提供。当前不少PLC厂家已有提供。如GE－FANAC的PLC就提供有可用C语言编程的软件。再前进一步，从理论上讲使用自然语言编程也是完全可能的。只是要下力气去开发，以及市场有这个需要。支持软件不仅编制PLC程序需要，监控PLC运行，EFB0812EH特别是监视PLC所控制的系统的工作状况也需要。所以，多数支持编程的软件，也具有监视PLC工作的功能。此外，也有专用于监控PLC工作的软件，它多与PLC的监视终端连用。台达风扇代理销售询购产品，欢迎咨询！本文以宏电GPRS和金立石仪表为例来说明整个应用过程。随着通信与自动化技术的发展，越来越多的自动化用户开始使用GPRS，但是GPRS的运营商一般是按使用GPRS的数据流量收费，每K的流量3分钱。不到1K的流量也按3分钱收费，同时电信运营商也推出了GPRS包月服务，如果用户使用的GPRS每月流量在50M以下则每月收30元。很多用户为了节省费用选用了包月服务，这些用户考虑的是如何把流量控制在50M以下，EFB0812EH为了解决这个需求紫金桥软件和GPRS厂商以及仪表厂商共同推出了解决方案。下面先介绍一下系统的原理，然后以紫金桥组态软件、深圳宏电GPRS、北京金立石流量积算仪为例详细介绍整个系统的实现过程。PMD2409PMB2-AKDE2408PKV1KDE2407PKV1PMD1206PKV2-AKDE1245PFV2GM1202PHV2-8PMD2409PMB3-AKDE2408PKV2KDE2407PKV2PMD1206PKV3-AKD0505PFS1GM0503PEV1-8PMD4809PMB1-AKDE2408PKV3KDE2407PKV3PMD1206PKVX-AKD0505PFS2GM0503P***-8PMD4809PMB2-APMD1208PKB1-APMD1207PKB1-APMD2406PKB1-AKD1205PFS1GM0503PFV1-8PMD4809PMB3-APMD1208PKB2-APMD1207PKB2-APMD2406PKB2-AKD1205PFS2GM0503PFV2-8ME92251V3-0000-999PMD1208PKB3-APMD1207PKB3-APMD2406PKB3-AKDE0505PFV1GM1203PFV1-8PMD1209PTB1-APMD1208PKV1-APMD1207PKV1-APMD2406PKBX-AKDE0505PFV2GM1203PFV2-8PMD1209PTB2-APMD1208PKV2-APMD1207PKV2-APMD2406PKV1-AKDE1205PFV1GM0503PHV1-8PMD1209PTB3-APMD1208PKV3-APMD1207PKV3-APMD2406PKV2-A1204KL-04W-***1606KL-04W-B591606KL-05W-B591608KL-04W-B791608KL-04W-***1608KL-05W-B691608KL-05W-B391604KL-01W-B402406KL-05W-B592410ML-05W-B692410ML-05W-B59210ML-05W-B392410ML-04W-***2410RL-04W-B792806KL-04W-B892810KL-04W-B493106KL-05W-B553110KL-04W-***3110KL-05W-B693110KL-05W-B593110KL-04W-B193610KL-04W-B303610KL-04W-B493610KL-04W-B593610ML-05W-B493612KL-04W-B664710KL-04W-B194715KL-04W-B564715KL-05W-B494710KL-04W-B49BM5115-04W-B492410RL-05W-S306820PL-07W-B303610RL-04W-S504710KL-05W-***4715FS-12T-B40-D001004KL-04W-B302410RL-05W-S406820PL-07W-B403612KL-04W-B304712KL-05W-B104715FS-12T-***-D001004KL-04W-B402410RL-05W-S50FBX14L483612KL-04W-B404712KL-05W-B204715MS-12T-B101004KL-04W-***2410RL-05W-S60BG0703-B042-0003612KL-04W-***4712KL-05W-B304715MS-12T-B201204KL-04W-B303106KL-05W-B30BG0703-B043-0003615KL-04W-B304712KL-05W-B404715MS-12T-B301204KL-04W-B403106KL-05W-B40BG0703-B044-0003615KL-04W-B404715KL-05W-B104715MS-12T-B401204KL-04W-***3106KL-05W-***9GV0848P1G039GV0848P1G039GV0912P1G039GV0912P1G039GV0912P1H039GV0912P1H039GV0948P1H039GV0948P1H039GV1212P4G019GV1212P4G019GV1224P4G019GV1224P4G019GV1248P4G019GV1248P4G019GV1248P4H019GV1248P4H019GV1212P1J019GV1212P1J019GV1248P1J019GV1248P1J019SG5748P5G019SG5748P5G019SG5748P5H019SG5748P5H019GV0312K3019GV0312H301109P0412R701109P0412M601109P0424G601109P0424B6019GV0412H3019GV0412C301109P0424R30139G0612P4S0019G0612P4H0019G0624P4S0019G0624P4H0019G0648P4S0019GV0612P1L019GV0624P1M039G0624H1019GV0824P4K01109R0812E4019HV0812P1G019HV0848P1G019GV0824P1G039G1212B4019HV1248P1G0019HV1248P1H0019GV1224P1J019GV1224P1H019GV1248P1B109SG1224H1019GV1524M5019SG5724P5H61109E1712Y501109E1712F501109E1724F501109E1748F5019GV2048P0G2019EC2048J001109P0912J4019A0948S4019L0412J3019L0412H3019L0412M301109L0612G401109L0612S401109L0612H401109L0612F401109L0612M401109L0624S401109L0624H401109L0624F401109L0624M401109L0648G401109L0648H401109L0812S401109L0812H401109L0812F401109L0812M401109L0812L401109L0824S401109L0824H401109L0824F401109L0824M401109L0824L401109L0848H401109L0912S401109L0912H401109L0912F401109L0912M401109L0912L401109L0924H401109L0924F401109L0924M401109L0924L401109L0948***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***19LB1448F501109L5712H501109L5712M501109L5724H501109L5724M501109L5748H501109L5748M5019GA0412P3J019GA0412P3J019GA0412P3G019GA0412P3G019GA0412P3H019GA0412P3H019GA0412P3M019GA0412P3M019GA0612P7G019GA0612P7G019GA0612P7H019GA0612P7H019GA0612P6G0019GA0612P6S0019GA0624P6G0019GA0624P6S0019GA0612H60019GA0612M60019GA0624H60019GA0624M60019GA0612P1J039GA0612P1J039GA0612P1K03系统构成，本系统由监测中心、宏电GPRS、EFB0812EH流量积算仪三部分组成，如图1所示。金立石流量积算仪负责把现场的流量值、累积流量、压力值、温度值4个参数通过RS-485方式周期（5分钟）自动上传给宏电GPRS，宏电GPRS再通过INTERNET传到监控中心的计算机上，监测中心由微机、紫金桥监控组态软件组成。紫金桥组态软件不但具有接收金立石流量积算仪自动上传数据的功能，而且还能主动采集下位仪表中的相关数据或下置仪表参数。)