通讯管理模块BT-ESM-P的应用案例
1 背景简介
火电厂的工辅设备数量和种类众多,而且多数都是由不同的设备厂家单独生产,这样就为后期设备联网通讯增加了难度。
某华东电厂主机系统采用了霍尼韦尔的DCS,除尘系统采用了西门子的S7-1500控制系统,而水处理和燃油系统采用了罗克韦尔自动化的ControlLogix和SLC500系列PLC,用户希望可以将各个子系统进行联网通讯。
2 难点分析:
由于采用了不同的控制系统和通讯协议,所以原计划需要针对不同系统,增加多种网关对不同协议之间进行转化。同时不同子系统由不同的SI和OEM提供的设备组成,在做联网升级时,为了避免停机和安全事故,最终用户不希望对原有程序做过多的修改,这些都为项目的实施增加了难度。
3 方案建议:
改造项目中标的系统集成商,经过多方选择,最后采纳了BEACON提供的方案,选择了BT-ESM-P的通讯管理模块作为数据交换管理机。
BT-ESM-P可以同时支持Modbus TCP, EtherNet/IP, PCCC(早期PLC5使用的以太网方案),西门子S7以太网,未来还计划集成串行通讯协议例如:Modbus RTU和IEC协议,并且所有的数据采集指令均可在模块内部进行配置,对数据的采集和交换只需要知道不同系统交换数据的地址即可,无需对于PLC和DCS的内部逻辑进行修改,使用简单方便,实施安全可靠。



4 总结:
BT-ESM-P数据交换区最大可达10000个16位字,基本上可以满足所有子系统交换数据的接入,一个模块就可以解决所有子系统数据通讯的问题,为用户节约了成本,减少了故障点。
同时由于无需像其他网关类产品一样,修改PLC或者DCS的逻辑,增加通讯程序,所以整个项目实施非常顺利。未来客户还计划待光缆铺设完毕之后,将磨煤系统,原料厂系统,送风系统,等单独的子系统,也接入到该通讯系统内,进行集中监控。
更多产品信息,可以访问BEACON
GLOBAL TECHNOLOGY官网进行查询:www.beaconglobaltech.com
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