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jwgorman

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Reply with quote  #1 
Hi,

Does anyone know if there is a 24VDC of 48VDC battery charger that can be controlled via Modbus?

Thanks, John

Rick H Parker

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Reply with quote  #2 
You can get charge controllers and battery chargers with Modbus. Googleing " Modbus 24V charger" brings some them right up.
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Rick H Parker
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jwgorman

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Reply with quote  #3 
OK thanks Rick - I have been doing this but wondering if you know of any that work well. I'm wondering if there are Lead acid based or LiFEPO4, and whether you can set the Charging Amps value through a modbus register, and read the SOC through another modbus register address. I see Deep Sea Electronics as one example but cannot see what the modbus map for their chargers are.
stmbtwle

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Reply with quote  #4 
What the heck is a modbus?

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
Rick H Parker

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"Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a de facto standard communication protocol and is now a commonly available"

https://en.wikipedia.org/wiki/Modbus

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Rick H Parker
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stmbtwle

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Reply with quote  #6 
Makes sense. Thanks.

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
jwgorman

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Reply with quote  #7 
Just as an example you can collect data from a modbus enabled device like a pyranometer, which gives out an irradiance value in watts per m^2.  with SolarNode running on a raspberry pi, you configure it once and then can chart it alongside your PV array production or whatever you like.

CustomIrradianceProperty.png  SolarConsole_irradiance.png 
some more notes here: 
http://solarnetwork.net/v4/testing-the-modbus-device-plugin/

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