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FAQ
Smart HMI
Q.
[XTOP] XDesignerPlus Text Appears Very Small
Product
A.
If, after installing XDesignerPlus on your PC and launching the program, the text in the left [Project Manager] appears very small, please follow these steps:
 
XDesignerPlus supports displaying in various languages such as English, Korean, and Chinese. To ensure compatibility with all languages, it uses the [Arial Unicode MS] font, which can display characters from most languages.
If this font is not supported on your PC, the issue you are experiencing may occur.
 
1. Check if the [Arial Unicode MS] font is present in your PC's [C:WindowsFonts] folder.
2. If the [Arial Unicode MS] font is disabled, right-click on it and select [Show] from the context menu to enable it.
3. If the [Arial Unicode MS] font is not present, download it and place it in the [C:WindowsFonts] folder.
4. Restart XDesignerPlus. The text in the Project Manager should now display correctly.
 
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Q.
[Product Fault Diagnosis] When the Front Touch Sensor Glass is Broken Due to Impact
Product
A.
1. If the LCD screen displays normally after turning on the product, only the front Touch ASS’Y (touch sensor + front sheet + front case) needs to be replaced for repair.

2. If the LCD screen does not display normally, both the front Touch ASS’Y (touch sensor + front sheet + front case) and the LCD panel must be replaced for repair.
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Q.
[R Product Fault Diagnosis] How to Diagnose COM2 RS-232C Port
Product
A.
1. Short pins 2 and 3 of the COM1/COM2 connector using a clip or similar tool, then enter the [Control Panel] from the [Menu Screen].
2. In the [Control Panel] menu, select the [Serial] menu.
3. In the serial window, select the signal level as RS-232C and run [Port Diagnosis].
4. A serial self-diagnosis window will pop up. If it displays [COM2, RS-232C: Communication, OK], the port is normal.
5. If, despite a proper short, it displays [COM2, RS-232C: Communication, Error], this indicates a hardware issue with the port. Please request A/S support from the customer service center.
 
Note:
Port diagnosis is different from [PLC Communication Diagnosis]. Port diagnosis is also called a loopback test and is used to check whether the hardware port is normal or faulty.
Communication diagnosis can be performed in the [Control Panel-PLC] menu on the menu screen.
For PLC communication, please refer to the relevant manual for cable wiring diagrams and communication settings.
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Q.
[R Series] Project File (Screen Data) Upload/Download Method
Product
A.

- Upload
1. Connect the communication cable between the TOP and PC.
- Connect the USB cable to the USB device port on the main unit (usually the front USB port).
- If using an Ethernet cable, connect it to the TOP.
2. Run TOP Design Studio, then select [Data Upload] under the [Transfer] menu.
3. When the [Connection Settings] window appears, select the cable you are using (Ethernet or USB; default is USB).
 - Click the [Connect] button.
 - If the TOP’s information appears in the [Connection Information] field on the right, the connection is successful.
 - Click the [OK] button to open the [Upload] window.
4. At the bottom, you will see options for 0 project, 0 log, and 0 alarm.
- Check the project box, set the save path using the [Select Folder] button, and click the [Upload] button to begin the upload.
 
- Download
1. You can transfer files using USB communication via the front OTG port.
- For products that support Ethernet, file transfer is also possible via Ethernet communication.
2. Use TOP Design Studio. The project file extension is [.TDS].
- Open the project file and select [Full Build & Transfer] under the [Transfer] menu.
3. Project build will proceed, and the connection settings window will appear.
- Select the cable you are using (Ethernet or USB), click the [Connect] button (check the connection information on the right), then click the [OK] button at the bottom right.
4. In the project build window, select the [Transfer] menu at the top to begin the transfer.
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Q.
[XTOP] How to downgrade XTOP OS from V4.8 to V3.1
Product
A.
To downgrade, you need to transfer the files in the following order:
V3.1 Boot file → Font file → OS file.
Please download the attached file from the 5th post in the [Service] - [Download] - [Manuals/Design] - [Other Materials] section of our homepage, and follow the instructions provided in the  manuaL.
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Q.
[XTOP] Communication Fails After Uploading a Modified Project
Communication
A.
If you are using the same PLC and communication cable, but communication fails after uploading a modified project, it's likely that the communication settings have changed from the previous configuration.
 
1. On the XTOP device, go to the menu screen and check the [Comm. Setup].
 
2. In XDesignerPlus V4, go to [Project] - [Project property] menu.
Select the TOP Model name in TOP Setting from the left panel. On the right side, and check the [Use HMI Setup] option.
If this option is checked, the settings on the XTOP device will be overwritten by the values defined in [Use HMI Setup] during the project transfer.
 
After adjusting the communication settings correctly, run the Communication Diagnosis to verify if the connection is successful.
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Q.
[XTOP] How to Check Communication Status Between TOP and PLC
Communication
A.
You can verify whether communication between the TOP device and the PLC is functioning properly by using the [Communication diagnostics] Button on the TOP device’s menu screen.
 
• For OS Version V3.1
From the XTOP device, enter the menu screen and navigate to the [Diagnosis] page.
If the screen appears in Korean, press the [가] button at the bottom to switch to English (toggle).
Communication diagnostics are found under item No. 5, 6, and 7. Run the appropriate Diagnosis based on the port connected to the PLC.
 
• For OS Version V4.8
From the XTOP device, enter the menu screen and press the [PLC Setup] button.
If the screen appears in Korean, press the [가] button at the bottom to switch to English (toggle).
Then press the [Comm. Test] button at the bottom of the screen.
 
TX represents the transmit protocol, which sends data from the TOP device to the PLC, while RX represents the response protocol, which receive data from the PLC to the TOP device.
The communication result is displayed in item No. 3.
 
If the result shows "OK" (Normal), it means the cable and communication settings are correct, and communication is functioning properly.
If the result shows "Error", such as a "Time Out Error", please check the cable connection and communication settings again.
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Q.
How to Install the USB Driver
File transfer
A.
The USB driver is automatically installed during the installation of either XDesignerPlus or TOP Design Studio.
Therefore, no separate USB driver installation is required when connecting via USB cable.
 
However, if you're experiencing USB connection issues when downloading or uploading a project and wish to reinstall the USB driver, you can do so by running the USB Driver Setup.exe located in the software installation directory:
 
[C:Program Files (x86)M2I CorpXDesignerPlus4usb_driver]
[C:Program Files (x86)M2I CorpTOP Design Studiousb_driver]
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Q.
[R Series Product Fault Diagnosis] Battery Replacement Timing and Testing Method
Product
A.
The TOPR/RX/RW/RE/RH series models are equipped with a rechargeable battery soldered onto the main board. This battery is used solely for the internal clock.
If the battery fails, the device’s clock will reset to 2000-01-01 on the menu screen.
In such cases, please contact our customer service center for repair support.
 
* Please note that battery life may be shortened depending on the installation environment. In particular, environments with corrosive gases may lead to more frequent battery-related issues.
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Q.
[XTOP] "XTOP.dll File Not Found" Error
Software
A.
This error message may occur under the following circumstances:
 
1. XDesignerPlus was run without restarting the PC after installation.
2. XDesignerPlus was reinstalled while it was still running on the PC.
 
To resolve this issue, please restart your PC and try running the program again.
If possible, we also recommend uninstalling the existing version of XDesignerPlus before performing a new installation.
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