modbus_write_register - write a single register
int modbus_write_register(modbus_t *ctx, int
addr, const uint16_t value);
The modbus_write_register() function shall write the value of
value holding registers at the address addr of the remote
device.
The function uses the Modbus function code 0x06 (preset single
register).
The function shall return 1 if successful. Otherwise it shall return -1 and set
errno.
modbus_read_registers(3) modbus_write_registers(3)
The libmodbus documentation was written by Stéphane Raimbault
<stephane.raimbault@gmail.com>