MQTT-flex, supported by PowerCable MQTT, is a protocol for cloud applications. Flex is a method of configuring the standard MQTT with a user-defined topic and payload structure. The customer does not need to adapt to one particular MQTT structure. AN40 demonstrates how to configure MQTT-flex in PowerCable MQTT and connect the Wi-Fi smart socket device to the public HiveMQ broker. A mobile app is used to display the data and control the power output over the MQTT protocol.
NETIO AN32 demonstrates how to control outputs and read measurements (kWh, A, V) from the 110/230V smart sockets from a Node-RED application using the Modbus/TCP protocol.
Node-RED is a programming tool for wiring together hardware devices, APIs and online services. Modbus/TCP is an industry-standard protocol. The Application Note applies to NETIO 4x devices as well as PowerCable Modbus 101x power sockets with WiFi.
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 AN30 Application Note demonstrates how to read consumption data from NETIO 4x and PowerCable REST smart socket devices and how to control their outputs using REST API – JSON. The netio.json file is transferred over http. Node-RED is a programming tool for wiring together hardware devices, APIs and online services. It can run, for example, in a cloud, on a local PC, or in a Raspberry Pi.
Node-RED is a programming tool for wiring together hardware devices, APIs and online services. The AN29 Application Note shows how to control 110/230V smart sockets from Node-RED using URL API. Invoking an URL is a simple but only a one-way solution (it is possible to control NETIO 4x outputs from Node-RED but it is not possible to measure consumption).
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.
Do you need an indication that any out of 10 LAN devices is not working or unavailable? Regardless of whether a cable got loose, WiFi was disconnected or the UPS failed, when one or more of the ten devices fail to respond to PING, the Lua script described in this Application Note lights up a red warning light.
AN24 is a Lua script that detects the presence of an IP address in the network and signals the result by switching a selected output on or off. In this way, it is possible for example to switch off certain equipment when a central printer is switched off, or to signal that someone is present in an office (reachable IP address of a notebook or a phone).
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.
The AN20 Application Note demonstrates how to control NETIO 4x smart sockets using the XML protocol. The XML protocol transfers a text file with a xml structure over http(s). NETIO devices contain built-in tools to easily test the protocol by the user. The XML protocol is supported by all NETIO 4x devices (NETIO 4 / 4All / 4C).
The AN19 Application Note demonstrates the use of the “URL API” or “http get” M2M API protocol. By invoking a certain URL, one of electrical outputs 110/230V can be switched On / Off / Toggle / Short pulse. This protocol is supported by all NETIO 4x devices (NETIO 4 / 4All / 4C).
The AN18 Application Note contains a Lua script that controls the RS-232 serial port and the sockets. The result is the ability to switch individual electrical outputs on or off over RS-232 using a text-based protocol that is the same as the Telnet M2M protocol.
AN18 demonstrates the control of the RS-232 serial port (with a request-response protocol) using a Lua script. The commands to control the power outputs can be modified (in the Lua script) to change the serial port protocol.
The NETIO AN14 Application Note shows how to connect NETIO 4x smart sockets and the STE2 online wifi thermometer by HW group. This Lua script turns individual sockets at the NETIO device on or off according to the states of STE2 digital inputs. The devices communicate over a LAN; values are transferred in a .xml file. The script can be modified for other devices and xml data.
STE2 by HW group is a LAN/WiFi thermometer/humidity meter. The NETIO AN13 Application Note presents a Lua script that connects NETIO 4x smart sockets with the STE2 thermometer. 230V electrical sockets are switched on or off according to the temperature (or humidity) measured by STE2. The devices communicate over a LAN, values are transferred in a .xml file. The script can be modified for other devices and xml data.
NETIO 4x power sockets (4x 230V, LAN and WiFi) can be controlled over the Web and with various M2M protocols. Supported protocols include MQTT. Application Note AN12 describes the use of the MQTT protocol in the “Generic” mode with the HiveMQ public MQTT broker. This public broker is intended for testing; for live use, we recommend to use your own installation of this or another MQTT broker.