WattNode Modbus energy meter and Wattdepot interfacing

[vikas...@amzur.com]

Hi,

I want to interface WattNode Modbus energy meter (http://www.ccontrolsys.com/w/WattNode_Modbus) with Wattdept. For this purpose, I am thinking about using an RS485 to Ethernet converter (http://www.usconverters.com/rs485-ethernet-converter). Using this converter I can connect my device to network. After the device is connected to network an IP address will be assigned to it and then I would use that IP address to add the device as a sensor in the Wattdepot.

I was just wondering if there are any technical issues that I might face while doing this. Or If there is a better way of interfacing the WattNode meter with Wattdepot then please let me know.

Thanks,

Vikas Soni

[Carleton Moore]

Hi Vikas,

Your solution seems like a good one, and it is missing one piece.  We need to write a program to query the meter's registers then convert the results to the WattDepot REST calls.  We have several examples of the collectors you can find them in the org.wattdepot.client.http.api.collectors package. The SharkCollector is an example that understands MODBUS, but is designed for a different energy meter.  The WattNode meter uses different register numbers than the Shark meter.  It would be reasonably easy to create a WattNode collector that reads the right registers.

Mahalo,

Cam Moore

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