Application Notes (ANxx)

The AN21 Application Note shows how to access measurements and control electrical sockets on a NETIO 4x device from third-party applications using the JSON protocol. AN21 demonstrates several different ways to control NETIO power sockets by transferring a netio.json file over http. The first method uses the “Device HTTP(s) File Upload” tool in the device’s web interface. The second method transfers the JSON file using a Chrome browser extension. The third method uses CURL (command-line tool) to transfer files over http.

Node-RED is a programming tool for wiring together hardware devices, APIs and online services. The AN31 Application Note shows how to control NETIO 110/230V smart sockets from Node-RED using HTTP - REST XML.

The AN07 Application Note shows a Lua script that turns individual 110/230VAC sockets on and off at specific times according to a predefined schedule. The state table can contain dozens of rows with actions to be performed at specified hours or days of week.

The AN27 Application Note demonstrates how to control NETIO 4x smart sockets and PowerCable Modbus devices using the Modbus/TCP protocol. Modbus/TCP is the de-facto industry standard for connecting sensors and devices to PLCs, SCADA systems and smart home systems. NETIO products can be controlled over Modbus/TCP as 1-bit outputs (“coils”). In addition, values can be measured and advanced control is possible using registers.

NETIO devices allow reading of outputs states and values of electrical measurements via SNMPv3 (SNMP get) and controlof PDU outputs (SNMP set). AN11 describes how to implement reading and writing using SNMP v1, v2c in MS Windows and Linux.

AN08 demonstrates the use of a Lua script to switch 230V sockets on/off according to a table. The example table contains 8 states. Each state has a defined duration (1s minimum). This example can be used as cyclic “traffic lights”.