Let’s face it. There’s no shortage of communications options for modern control networks.
You have the usual selection of fieldbuses like Modbus and Profibus for low-data-rate applications, Ethernet for high-end systems, and a broad selection of wireless (Wi-Fi, Zigbee, Z-Wave, etc.) and powerline communication (G3-PLC, G.hn, HomePlug, etc.) for everything in-between.