modbus_write_registers - Man Page

write many registers


int modbus_write_registers(modbus_t *ctx, int addr, int nb, const uint16_t *src);


The modbus_write_registers() function shall write the content of the nb holding registers from the array src at address addr of the remote device.

The function uses the Modbus function code 0x10 (preset multiple registers).

Return Value

The function shall return the number of written registers if successful. Otherwise it shall return -1 and set errno.

See Also

modbus_write_register(3) modbus_read_registers(3)


The libmodbus documentation was written by Stéphane Raimbault <>

Referenced By

libmodbus(7), modbus_mask_write_register(3), modbus_read_input_registers(3), modbus_read_registers(3), modbus_write_and_read_registers(3), modbus_write_register(3).

01/25/2024 libmodbus v3.1.7 libmodbus Manual