MODBUS_SET_FLOAT_ABC(3)

📦
version 3.1.6 · 3 versions
, in debian bookworm

💖 MODBUS_SET_FLOAT_ABCD 💖

ok so bestie, we're in the libmodbus manual and today's main character is modbus_set_float_abcd — she takes a float and yeets it into your registers in ABCD byte order. no cap, it's giving "conversion era" ✨

🌸 SYNOPSIS 🌸

void modbus_set_float_abcd(float f, uint16_t *dest);

look at her. two params. zero drama. 💅

🦋 DESCRIPTION 🦋

okay so here's the tea, bestie 🍓 — modbus_set_float_abcd() shall set a float to 4 bytes in the usual Modbus format.

and the important bit, don't skip this one 🙈 — your dest array must be a pointer on two 16 bits values, because that's literally the only way it can store the full result of the conversion. two. 16-bit. values. no half-sending, she needs the whole thing. periodt. 👑

✨ RETURN VALUE ✨

there are no return values. none. zero. she just does the thing and dips 💀 (iconic behaviour honestly)

💜 SEE ALSO 💜

the whole float family is here, and they all slay in their own byte order 🌈

iykyk — pick your byte order wisely, they are not the same vibe 😭

🎀 AUTHORS 🎀

the libmodbus documentation was written by Stéphane Raimbault</> <stephane.raimbault@gmail.com> 🫶 thank you for your service, king.

and that's the whole page, bestie!! 🧚 this was libmodbus v3.1.6, dated 11/17/2025, and the original page header said MODBUS_SET_FLOAT_ABC(3) up top and libmodbus Manual as the manual name — so now you know exactly what you're reading and when it was born 💖 go forth and convert floats, you absolute legend ⭐

📦 where this page comes from