MODBUS_GET_BYTE_TIME(3)

💖 MODBUS_GET_BYTE_TIME(3) 💖

okay bestie, come sit with me — this one's from the libmodbus Manual and it's lowkey one of the most useful lil getters in the whole library. no cap. 🫶

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✨ NAME ✨

modbus_get_byte_timeout — get timeout between bytes

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🌸 SYNOPSIS 🌸

int modbus_get_byte_timeout(modbus_t *ctx, uint32_t *to_sec, uint32_t *to_usec);

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🦋 DESCRIPTION 🦋

so like, the modbus_get_byte_timeout() function shall store the timeout interval between two consecutive bytes of the same message into the to_sec and to_usec arguments. 💅

that's it. that's the whole job. she reads the vibe, she hands you the numbers. iconic behavior honestly.

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⭐ RETURN VALUE ⭐

• The function shall return 0 if successful. slay. 🎀
• Otherwise it shall return -1 and set errno. not slay. go check your errno, bestie, she's trying to tell you something.

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🌈 EXAMPLE 🌈

uint32_t to_sec;
uint32_t to_usec;

/* Save original timeout */
modbus_get_byte_timeout(ctx, &to_sec, &to_usec);

see how she's saving the original timeout first? main character energy — you grab the og values before you go changing anything, so you can always put things back the way you found them. periodt. 👑

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💜 SEE ALSO 💜

• modbus_set_byte_timeout(3)
• modbus_get_response_timeout(3)
• modbus_set_response_timeout(3)

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👑 AUTHORS 👑

The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>

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and that's the whole page, bestie!! this one's from libmodbus v3.1.6, dated 11/17/2025 — so go forth, read your byte timeouts, and remember: you're doing amazing sweetie 💖✨🎀🦋🌸💅🫶