When a device (hardware) is installed on a computer, a COM port is automatically assigned. (COM1, COM2, etc.)
General-purpose package software (application software) uses this COM port to perform serial communication.
1. Start the Device Manager.
[Device Manager] can be started from the menu displayed by right-clicking the Windows mark (start button) at the bottom of the Windows screen.
2. Confirm if the recognized USB device is displayed in the [CONTEC] folder.
3. Confirm if the added COM port is displayed in the [Ports (COM & LPT)] folder.
1. Display the properties of the device you want to change in the [Ports (COM & LPT)] folder.
2. Select the [Port Settings] tab in the properties window and click the [Advanced...] button.
3. You can change the COM port number in the [COM Port Number] combo box in the [Advanced Settings for COM] window.
Supplement :
By checking [Compulsion Half-Duplex], the software setting can be forcibly switched from full-duplex communication to half-duplex communication.
By checking [Used Serial Mice.], you can use a mouse pointer for serial communication.
Depending on the environment, COM ports may not be assigned sequentially starting from CH1 on the device.
Therefore, check which CH number on the device corresponds to which COM port, and then specify the COM port on the general-purpose package software.