MODBUS_GET_FLOAT(3)

💖 MODBUS_GET_FLOAT(3) 💖

okay bestie, welcome to the libmodbus corner of the manual, we're doing modbus_get_float today and it's giving legacy ✨

---

🎀 NAME 🎀

modbus_get_float — get a float value from 2 registers 🫶

---

🌸 SYNOPSIS 🌸

float modbus_get_float(const uint16_t *src);

⚠️ Warning, and I need you to hear me on this one: this function is deprecated since libmodbus v3.2.0 and has been replaced by modbus_get_float_dcba(). Not me being dramatic, that's literally what it says. 💀

---

✨ DESCRIPTION ✨

So modbus_get_float() shall get a float from 4 bytes in Modbus format (that's DCBA byte order, iykyk).

The src array must be a pointer on two 16 bits values, okay? Two. Not one, not three. Two. 💅

For example, if the first word is set to 0x4465 and the second to 0x229a, the float value will be 916.540649. No cap, that's the vibe. 🦋

---

💜 RETURN VALUE 💜

The function shall return a float. That's it. That's the whole section. Slay. 👑

---

🌈 SEE ALSO 🌈

• modbus_set_float(3)
• modbus_set_float_dcba(3)
• modbus_get_float_dcba(3)

---

💖 AUTHORS 💖

The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com> — thank you legend, we are obsessed 🫶✨

---

libmodbus v3.1.6 🌸 11/17/2025 🎀 — mwah, that's the whole page, go read the non-deprecated one bestie, ily 💖🦋✨