A distributed control system (DCS) for controlling an industrial process using a plurality of distributed control nodes (DCNs) can include a plurality of Device DCNs, each Device DCN including an I/O interface coupled with a field device for single channel input or output, a plurality of Application DCNs, and one or more Ethernet switches. The plurality of Device DCNs and the plurality of Application DCNs can be adapted to host a software runtime and communicatively coupled via the one or more Ethernet switches. The DCS architecture can include of two types of DCNs; Application DCNs and Device DCNs. The software runtime can be configured to selectively provide control application level communication and function block execution services.