http://www.accusys.com.tw 23User’s Manual5. Update FirmwareACS-77100 allows the customers to update firmware via RS-232 interface. The firmware can beupdated from a host PC with third party communication software, such as HyperTerminal, thatsupports ANSI terminal emulation. The setup process for HyperTerminal will be guided in thischapter.NoteThe data and configurations on the array are not affected byfirmware updating.NoteThe HyperTerminal is bundled as standard with MicrosoftWindows operating system. It will be found in theCommunications folder. The program can also be downloadfrom Higraeve Software at http://www.higraeve.com/htpr/5.1. Firmware updating steps1. Ensure the ACS-77100 is turned off.2. Connect one end of the supplied RS-232 cable to the RS-232 3pin port from the Pin2, 4, 6of the CN8 on the ACS-77100 controller, and connect the other end to one of the hostcomputer’s COM port.| Pin2 to A | Pin4 to B | Pin6 to C |3. Launch HyperTerminal from the host computer: Start > Programs > Accessories >Communications > HyperTerminal.