1-3-1 LED displayPWR: Power supplyRUN: program runningSTOP: program stop1-3-2 Download portn The port is RS-232 standard and double function designed, is able to download PLC programand HMI program.Pin2 RXDPin3 TXDPin5 GNDPin7 RTSn Used as RS-485 com port: for HMI connecting with slave deviceCable connection figure:Attention:(1) Do not cut the power when downloading, or you have to download again(2) The cable of downloading HMI program is the same as the downloading PLC program(3) Do not download when XCPPro and Touchwin software are both running(4) RS-232 download port is only used to download, do not use it in other wayPin1 APin9 BPin6 PRT (when HMI connecting with slave device, short pin5&6 )Pin8 DOWNLOAD ( short pin 5&8 to forced-download HMIprogram )