Hi all I want to send a negative value | Home Assistant | Page 1

jovial briar Oct 17, 2023, 4:03 PM

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this is basicly where i am stuck: https://github.com/home-assistant/core/issues/21371

opaque arch Oct 17, 2023, 4:06 PM

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what are you trying to do exactly?

jovial briar Oct 17, 2023, 4:15 PM

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I want to charge/discharge a Battery through an inverter. The Inverter has a modbus adress that accepts positive values to discharge to grid, negative to charge from grid

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discharge works as expected, cant enter negative values through HA to start charging from grid when the dynamic tariff is low

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not sure if relevant, but in order to discharge with 1000 Watts i need to send 2 values 0, 1000. let me make a screenshot. I found that example on the forum and it was the only time it worked because the modbus adress is two 16bit integers or something like that

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jovial briar Oct 17, 2023, 4:40 PM

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i found a solution

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65535, 64536 to set negative 1000

opaque arch Oct 17, 2023, 4:58 PM

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oh very nice

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I think it depends on the register you're writing to whether negative values are allowed or not

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some have unsigned type, some signed

#Hi all I want to send a negative value