Interconnectivity and the standardization of communications promotes the growth of Industry 4.0. The most modern industrial machinery, devices and processes are equipped with communication systems that favor such connectivity throughout industrial standards such as OPC UA (Open Platform Communications Unified Architecture). On the other hand, older computer numerical control systems (CNCs), although generating large amounts of data, lack standardized communication interfaces. Based on the above, the purpose of this research has been to provide connectivity to a subset of Siemens numerical controls, specifically the SINUMERIK 840D models in their older versions. Although previous research has explored this issue, limitations were encountered due to hardware and/or software requirements that present incompatibilities with the older versions. To address this issue, in this article, we present a Unified Communications System (UNIFIK) based on OPC UA for older SIEMENS CNCs, namely the Siemens 840D powerline (pl) and solution line (sl), through their PC Unit systems (PCU) SINUMERIK MMC, SINUMERIK HMI Advanced and SINUMERIK Operate 4.5. UNIFIK has been developed, tested, and validated in an Industry 4.0 laboratory as well as on real end-customer production lines. For the validation phase, 21 SINUMERIK devices were connected, and 7 OPC-UA clients simultaneously read 250 variables for 4 months. RAM usage was observed to range from 75 MB to 100 MB and CPU was observed to be within the normal range, fluctuating between 5 % and 30 %. These performance metrics were achieved alongside a data refresh time of less than one second (250 milliseconds for SINUMERIK Operate) and a transfer rate between the OPC-Server and the drivers of 1.65 kB/s, which represents a significant advancement in the connectivity of this type of machinery.

中文翻译：

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使用即插即用系统将旧 SINUMERIK CNC 机床与工业 4.0 集成和互连

互联互通和通信标准化促进了工业 4.0 的发展。最现代的工业机械、设备和流程都配备了通信系统，这些系统有利于整个工业标准的连接，例如 OPC UA（开放平台通信统一架构）。另一方面，较旧的计算机数控系统（CNC）虽然生成大量数据，但缺乏标准化的通信接口。基于上述内容，本研究的目的是提供与西门子数控系统子集的连接，特别是旧版本的 SINUMERIK 840D 型号。尽管之前的研究已经探讨了这个问题，但由于硬件和/或软件要求与旧版本不兼容，因此遇到了限制。为了解决这个问题，在本文中，我们通过其 PC 单元系统 (PCU) 为旧版西门子 CNC 提供基于 OPC UA 的统一通信系统 (UNIFIK)，即西门子 840D 电力线 (pl) 和解决方案线 (sl) SINUMERIK MMC、SINUMERIK HMI Advanced 和 SINUMERIK Operate 4.5。UNIFIK 已在工业 4.0 实验室以及真实的最终客户生产线上进行了开发、测试和验证。在验证阶段，连接了 21 台 SINUMERIK 设备，7 个 OPC-UA 客户端同时读取 250 个变量，历时 4 个月。RAM 使用量的范围为 75 MB 到 100 MB，CPU 的使用量在正常范围内，在 5% 到 30% 之间波动。这些性能指标是在数据刷新时间不到一秒（SINUMERIK Operate 为 250 毫秒）以及 OPC 服务器和驱动程序之间 1.65 kB/s 的传输速率的情况下实现的，这代表了该设备连接性的显着进步。机械类型。