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Where: tags — remote [x] PLC [x]

PLC control via the Internet

... area where communication is not stable. It turns out that if not the best and not the cheapest communication and data exchange either slows down or does not work at all. In this connection, I set myself the task of understanding the possibilities of remote control and programming, when the PLC is connected directly to a router that has an Internet connection. In total, I know three ways of such connections: access to a static IP, the use of dynamic DynDNS connection and a dedicated connection over the VPN channel. In this article, we’ll ...

VBA EXCEL

... communications have met serious problems and it was abandoned. We are open to the PLC two ports continuous operation: 2455 (Codesys) and 502 (Modbus TCP). When configuring PLC Wago necessary to use the instruction. As the communication functions of the remote PLC surcharge ActiveX applet was used, it is taken on site http://modbustools.com/modbus_activex.html It works well and is configured, however, because of its triality communicates no more than 60 minutes, and after three months of use ceases to run....