Module function: This module is programmable control, can achieve thousands of functions, stable and reliable working performance, built-in watchdog timer circuit, to ensure that the module for a long time to run!!! Input high speed pulse C235, C251 and FX1N compatible. Output relay 1A output, Rated current 5A, can directly drive DC solenoid valve, AC solenoid valve, AC contactor, AC motor, etc,. Precautions for use: The PLC with two programming port. The 232 interface, you can directly use the USB-232 serial port with a computer to download the program directly. The TTL interface. Built-in Analog input AD, corresponding to internal data register D5030.(Not D8030) Built-in Analog output DA, corresponding to internal data register D5101. When the PLC need to connect with the touch screen or text, can be used to connect 232 programming port. Assistant Relay Normal Use M0 - M383 Hold After Power Off M384-M1535 Special Use M8000-M8255 State Holding Use S0-S999 Timer 100MS T0-T199 10MS T200-T245 1MS T246-T249 100MS accumulation T250-T255 Counter 16-bit C0-C15(0-32767) 16-bit(Hold After Power Off) C16-C199 High Speed(Hold After Power Off) C200-C255 Data Register 16-bit D0-D127 16-bit(Hold After Power Off) D128-D5029 16-bit Special Use(AD) D5030(Output Voltage: 0-10V) 16-bit Special Use(DA) D5101(Output Voltage: 0-3.3V)