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(5) Next, set the port number. Select “Start Menu” -> “Control Panel” -> “Hardware and
Sound”, and select “Device Manager”.
(6) Click the + mark next to “Ports (COM & LPT)” to display the connected serial ports. If
“Silicon Labs CP210x USB to UART Bridge (COM3)” is displayed, COM3 represents
the port number.
(7) Double-click to open the “USPM.int” file located in the folder into which the
USPM-RU/RUIII program has been installed (C:¥USPM or ¥USPM440 by default). If it
cannot be opened, right-click on the “USPM.int” file, select “Open with”, and select
Notepad to open it.
* “.int” will not appear if the “Hide extensions for known file types” setting is applied.
(8) Check the numerical value that appears on the third line of the “USPM.int” file. This
number represents the serial port number, for which the default value is 5. Specify the
serial port number that you confirmed in “Device Manager”. In the example above,
“COM3” was displayed, so you would type 3. After the setting is complete, save and
close the file. If the file is read-only and cannot be overwritten, clear the “Read-only”
check box in the file properties and save the file again.
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