PLC 未连接到 KEP 服务器 (OPC)
我们无法让 PLC 与 KEPServerEX (OPC) 可靠连接。
我想知道 SOF 的其他人是否有使用 PLC 和 OPC 的经验。如果是的话,他们有什么关于与我们的 OPC 服务器建立可靠连接的建议吗?目前,我们使用 KEPServerEX 作为 OPC,但是如果有人知道更好的程序可以使用,我们愿意接受建议。
We can't get our PLC to reliably connect with KEPServerEX (OPC).
I was wondering if anyone else here at SOF has experience working with PLC and OPC. If so do they have any tips on making a reliable connection with our OPC Server. We currently use KEPServerEX for our OPC, but if anyone knows a better program to use we are open to suggestions.
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我在工业环境中的 4 台服务器上使用 Kepware OPC 服务器用于 MODBUS TCP、Simatic S7 和横河电机超过 5 年,没有出现任何问题。它很容易设置,并且在探索过程中没有出现任何问题。实际上,它太好了,以至于我们决定仅在它不支持我们拥有的设备时才使用它(这种情况很少见,并且大多数发生在我必须开发自定义 OPC 服务器时)。 Kepware OPC 服务器甚至能够使用保留的 PG 连接来连接到西门子 PLC(与 Simatic OPC 服务器不同,如果您的连接数量有限,例如 CP343 LEAN 版本通信模块,这会很好)。如果您在 OsiSoft PI 等历史记录中使用其中的数据(按 OPC 服务器连接收费),它还会为您节省 $$$$$,因为所有 Kepware OPC 服务器将在 Osisoft PI 中显示为单个 OPC 服务器。唯一让我生气的是,经过一段时间的试用后,当我评估一个我应该尝试的新 OPC 服务器时,它停止了,没有警告所有服务器(包括许可的服务器)。您是否尝试过 Kepware 技术支持?您检查过电缆吗?您知道试用版会在一段时间后停止吗?
作为替代方案,您可以尝试 Matrikon OPC 服务器。它们也非常好并且运行没有问题。
I use Kepware OPC server for MODBUS TCP, Simatic S7 and Yokogawa for more then 5 years on 4 servers in industrial environment without any problems. It was easy to set up and showed no problems during exploatation. Actually, it was so nice that we decided to not use it only when it doesn't support the device we have (which is rare, and mostly happens when I have to develop custom OPC server). Kepware OPC server is even able to use reserved PG connection for connection to Siemens PLCs (unlike Simatic OPC Server, this is good if you have limited number of connections like in CP343 LEAN version communication module). It will also save you $$$$$ if you use data from it in some historian like OsiSoft PI which charges per OPC server connections, since all Kepware OPC servers will show as single OPC server to Osisoft PI. The only thing that made me angry was that after some trial time it stopped without warning all servers (including licenced ones) when I was evaluating one new OPC server I was supposed to try out. Have you tried Kepware technical support? Have you checked your cabling? Are you aware that trial version will stop after some time?
As an alternative you can try Matrikon OPC servers. They are also very good and run without problems.