MODBUS_SET_FLOAT_DCB(3)

MODBUS_SET_FLOAT_DCB(3) 💖

okay bestie, welcome to the libmodbus Manual ✨ this one's a lil cutie from section 3, and no cap it's short and sweet.

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🌸 NAME 🌸

modbus_set_float_dcba — set a float value in 2 registers using DCBA byte order 💅

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🦋 SYNOPSIS 🦋

void modbus_set_float_dcba(float f, uint16_t *dest);

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✨ DESCRIPTION ✨

so the way that modbus_set_float_dcba() works is: it shall set a float to 4 bytes in inverted Modbus format (aka DCBA order). iconic, honestly.

and listen — the dest array must be a pointer on two 16 bits values so it can actually store the full result of the conversion. like, two. not one. not three. two. 🎀 the math has to math.

not me warning you: if dest isn't big enough for those two 16-bit values, you're gonna have a bad time 🙈 it literally cannot hold the whole conversion otherwise.

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💜 RETURN VALUE 💜

There is no return values. 💀 like, none. void behavior, void energy, nothing comes back to you. periodt.

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🌈 SEE ALSO 🌈

• modbus_get_float_dcba(3)
• modbus_set_float(3)
• modbus_get_float(3)

go read those too, bestie, iykyk 🫶

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👑 AUTHORS 👑

The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com> — thank you legend, we appreciate you fr fr 💖

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and that's the whole vibe check! this page came to you courtesy of libmodbus v3.1.6, dated 11/17/2025 — slay, bye bestie 💅✨🦋🌸