配套附件齐全
技术支持支持
软件类型通用
软件名称001
版本号01
版本类型5
版本语言通用
系统平台要求无
系统硬件要求无
支持用户数无限制
品牌施耐德
IC694DNM200电源模块现货供应1个起批,量大从优;
IC694DNM200电源模块现货供应1个起批,量大从优;
IC694DNM200电源模块现货供应1个起批,量大从优
4.4 模块状态监测
模块状态监测包括:系统运行状态,Modbus RTU通讯状态,Modbus TCP连接状态、通讯状态,以及通讯异常报警。
4.5 通讯测试
实验平台采用NA200 PLC挂载本模块,然后通过网络交叉线和PC电脑相连,利用网上免费网络调试工具SocketTool2进行通讯测试。先在SocketTool2建立客户端,然后连接,发送测试通讯数据十六进制000000000006500600C90055,查看是否有数据返回。
五、结束语
本文设计的Modbus TCP通讯模块,能和现有PLC稳定连接,从成本、性能上都将是个比较好的选择。前文介绍的是以从站模式为例,对于主站模式,可以PLC利用串口对通讯模块设置通讯请求的从站信息(IP地址等)。在不改变硬件的基础之上,通过软件升级,可以把模块功能更加完善。比如:满足通讯模式一主多从、一从多主、以及自定义通讯的现场应用需求。同时本文提出的思路也可以作为一种通用方案,推广到类似的产品开发中。
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