42. Installation Dimension2.1 Pin descriptionPin NO. Name Function Description1 3.81mm terminal block UART interface/Power supply interfaceStandard RS-232&485 interface/Screwing power supply interface2 PWR-LED Power LED Red, lit when the power is on3 TX-LED Transmit LED Yellow, blinks when sending data4 RX-LED Receive LED Yellow, blinks when reveiving data5 LINK-LED Link LED Red, lit when no network, off whennetwork connected6 RUN-LED Run LEDRed, system operating Indicator, litwhen running error, off whenrunning properly7 Baud Rate Reset Tact switch Reset baud rate(115200)8 Antenna interface SMA-K interface External thread, 10mm, 50Ωcharacteristic impedance