Service Manual RU OHAUS
Page 17 / 53 11/01/2010 Ohaus
6. Flashing Software
The RU Operating System Software is retained in Flash EPROM's on the Main Logic
PCB. The EPROM's can be reprogrammed using a PC and a downloader program
"HyperTerminal". Cables and components are the same as above RS232 cable.
Before downloading the software, turn the RU power OFF. Connect one end of the
cable to the PC's serial port and the other end to the RU serial port.
Power ON the scale.
The scale will display "WAIT FOR HOST……" to wait for PC signal.
Then enter the HyperTerminal, to select right COMM port of the computer.
Then set the data as "baud tare 115200, data bits 8, parity none, stop bits 1, flow
control none".
After come back main interface of the Hyper terminal, to select "send file",select the
scale code and the protocol as "1K Xmodem". Send the file to scale.
The PC screen will display a status menu to show the flashing progress. When the
flashing is completed, the scale will reset automatically. Press any key to exit
HyperTerminal program at the PC.
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