One of the casualties of fluid communication in the factory is the death of proprietary networks and communication protocols in favour of the uninhibited free flow of data.
Proprietary protocols are developed and owned by an organisation; specifications generally aren't published and implementation guidelines aren't freely distributed as with standard protocols. These types of protocols make peer-to-peer communication between devices from different vendors tricky. Traditionally, the options were to only buy one brand, buy gateways between the controllers or stick to one industrial Ethernet protocol. Not ideal, to say the least.
On the other hand, standard protocols have publically available specifications so vendors can write them into their own devices. These protocols help ensure communications between applications by using a standard response layer and common transport. Internationally accepted standard protocols are protocols that have been approved by an international body.
Although proprietary communication protocols were previously hailed for their safety in comparison to their standard and open brethren, plant managers were screaming out for standardisation. This was fuelled by the desire for a reduced total cost of ownership, more manufacturing productivity and synchronisation of the entire supply chain. In short, the manufacturing masses wanted in on the Internet of Things (IoT).
They had a very good reason to as well. IoT has made the modern plant a hive of automated data transfer, facilitating lean manufacturing, quicker decision making and smart raw data analysis.
Furthermore, the worry over safety with standard protocols has been counteracted by businesses taking the proper precautions to protects assets and infrastructure.