1 according to HMS Networks, an international company in the field of industrial communications
Modbus TCP is an open, globally accepted, simple, vendor-neutral communication protocol. Being on the top 4 of industrial ethernet protocols, Modbus TCP is a ‘de-facto’ automation standard. If your system is not deterministic and doesn’t require high-level real-time performance, it’s not reasonable to employ high-end ethernet protocols, such as EtherCat, Profinet, Ethernet/IP. Why would you pay more if Modbus TCP is enough for your task?