modbus_get_header_length(3)

retrieve the current header length

Section 3 libmodbus-dev bookworm source

Description

MODBUS_GET_HEADER_LE

NAME

modbus_get_header_length - retrieve the current header length

SYNOPSIS

int modbus_get_header_length(modbus_t *ctx);

DESCRIPTION

The modbus_get_header_length() function shall retrieve the current header length from the backend. This function is convenient to manipulate a message and so its limited to low-level operations.

RETURN VALUE

The header length as integer value.