... 5 is used for voltage and current inputAnalog meter output1 terminal, 0/4~20mA or 0~10V available for itDO ... 485 connector RS485+,RS485-4 bits LED displaysetting frequency, output frequency, output voltage, output current, motor speed, output ... status.Protection functionProtection functionOver voltage, under voltage, current limitation, over current, overload of inverter, overload of motor, overheat ...