Compact modbus module for smart metering

March 08, 2016 // By Julien Happich
Acceed's RIO-2010 data acquisition module was specially developed for smart metering data acquisition and data transfer. Together with the company's micro PC Matrix-505, it can form an application ready for operation.

The RIO-2010 supports the TCP and RTU modbus protocols. Its integrated AJAX Web interface enables fast and easy configuration using a Web browser. It supports the new MQTT protocol, also known under its former name SCADA protocol. MQTT (Message Queue Telemetry Transport) is an open messaging protocol for machine-to-machine communication (M2M) which enables the transfer of telemetry data as messages between devices, also within restricted networks or in case of long delay periods. The board comes with the 1-wire bus from Maxim for recording temperature data.

16 insulated digital inputs and 8 relay outputs can be used to control peripheral devices. Alarms can be configured via the Web interface, equally E-mail messages and switching processes. The RIO-2010 MQTT can send messages, protocol events and activate relays in alarm status.

In connection with the 108x78x24mm fanless industrial micro PC Matrix-505, the RIO module is a compact application for consumption and environmental data monitoring, immediately available for operation. The Matrix-505 offers two 10/100 Ethernet interfaces, two USB 2.0 host connections as well as a microSD slot for memory cards up to 32 GB.

An ARM9 processor with 400 MHz works in the fanless Matrix 505 metal casing. Its working memory is 128 MB. For the extension of the flash memory, a microSD slot which enables capacities of up to 32 GB is available.

The RIO-2010 module is also suitable for assembly in switch cabinets (on top-hat rails) and can be operated using direct current from 9 to 48 V. The serial interface is executed as a screw connector terminal. LEDs signalise the respective relay status. The admissible ambient temperature for operation is 0 to 70 °C.

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