PLC pages are now classified by official platform, motion bus, protocols, architecture and engineering checklist.
Official specs: Codesys, IEC61131-3, EtherCAT, CANopen, Ethernet, serial, OPC UA and Modbus.
Engineering specs: controller, servo, remote I/O, cycle, axis count and topology.
Protocol classification: Modbus TCP/RTU, OPC UA, MQTT, Profinet and EtherCAT.
