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Dec 21, 2020 • Filed to: USB Recovery • Proven solutions

Have you ever had difficulty connecting your devices to your computer using a Prolific USB to Serial adapter? If yes you are lucky to find this page, it will give you all the information need to fix an unresponsive Serial driver adapter. You may have noticed a yellow exclamation mark hovering over or beside the USB to Serial Driver when searching your Device Manager and if you have we can all agree that it signifies a prevailing problem.

Overview of the Error

If you are not able to connect your device to your PC using a USB to Serial adapter it may be that

• The USB driver is outdated
• The USB Driver is missing
• Or even a corrupted driver

While you can't be so sure what the exact problem is there are solutions you can adopt to fix the issue once and for all. Read on to find quick fixes to resolve the problem.

1# Fix Prolific USB to Serial Driver not Working

Solution: Roll your Prolific USB to Serial Driver back to an older version

Updating your drivers often work wonders for your system because it makes sure that it runs on the latest features that guarantee maximum functionality. Unfortunately updating your drivers can cause this kind of error especially if your latest update does not work too well with your hardware. Once you upgrade your PC to the latest Windows version your Prolific USB to Serial Driver also updates to the latest driver software and if the driver is not compatible with your Hardware issues may arise. To correct the error, you will have to download the driver again by following these steps.

• Right-click on your PC Start button and open Device Manager

• Double click LPT and COM ports then locate the Prolific USB to Serial Driver and right-click it so you can select Update Driver

• For driver software click My computer

• From My computer select 'Let me pick from a list of drivers available'

• Choose an older version from the list then click Next

• The driver you selected will be installed automatically
• Once it has been downloaded reconnect the driver to see if it works.

2# Fix Prolific USB to Serial Driver 'Coder 10'

Driver issues reveal themselves in so many ways or through messages such as

• This device will not start (Code 10)
• There is no driver installed in this device
• The driver was not successfully installed

A code 10 error may arise because the chip you are using is not an original one. If you are using a fake, the manufacturer has a way of disabling it due to copy write infringement and the copy write takes effect once you download a recent update. To protect your PC from getting this code, you will have to make sure that your Windows 10 never updates a driver without approval. Updates come in the form of 64 bit and 32-bit drivers. Below we will show you how to work your way around the problem.

Window 64 bit Fix

To fix Windows 64 bit OS including Prolific USB to Serial Adapter, follow through these steps.

• Download 'PL2303_64bit_Installer.exe and Save
• Remove every USB to Serial adapter from your PC and double click the 'PL2303_64bit_installer.exe
• Follow the prompt by plugging in one USB to Serial adapter the click on Continue
• Reboot your PC to get Windows up and running

If you have followed these process through and you still see the same error go to your device manager

• Open the control panel and navigate to Device Manager
• From your control panel navigate to the System category and click the Hardware tab
• Scroll to the LPT/COM port and double click Prolific USB to Serial Comm Port
• Click Drivers in the Properties section
• The Driver you choose should read '3.3.2.102 with an appropriate date attached
• If the date is wrong then it means the wrong driver was installed
• Unplug the Serial adapter and run the steps again to install the correct driver

Window 32-bit

For Windows 32-bit OS systems follow these steps

• You will have to download the 'PL-2303_Driver_Installer.exe and save from Microsoft download link
• Run the program and eradicate the driver if you can
• Run the installer once more to install a correct driver

To Troubleshoot for error if your device still does not work

• Go to Control panel, enter System to access your Device Manager
• Scroll down to the LPT/ COM port then double click Prolific USB to Serial Comm Port
• Click Driver in the Windows Properties section
• The driver must be numbered as '2.0.2.8' and dates accordingly

If the driver was not installed, remove the Serial adapter then run 'PL2303_Driver_Installer.exe' again. Follow directions in Device Manager to download the correct driver

The three solutions listed in this article have proven to be quite helpful in fixing a Prolific USB to Serial driver not working on Windows 10. They may appear confusing at first but if you follow each step in detail you can resolve the issue.

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If a supported Baltech RFID stand-alone device is used, the TwinCAT PLC library can be used as interface.

Alternatively certain Beckhoff Control Panels or Panel PCs can be used. In these devices a RFID reader can be integrated as an option.
In this case an SDK containing the proprietary documentation is provided.

The functionality if the TwinCAT library is the same in both cases.

RFID reader settings

For smooth communication between controller and RFID readers, some settings need to be made before the system startup. These include, for example, the baud rate for the serial communication. The proprietary tool 'Baltech id-engine explorer' provided by the RFID reader manufacturer can be used to transfer these settings to the RFID reader. The tool can be used to carry out a function test to check whether the RFID device is recognised and whether the transponder cards are detected.

The following default settings are recommended for the data communication:

Baltech Port Devices Driver Download For Windows 10 Free

This matches the factory setting of the supported Baltech RFID devices. Other parameters can be set, if required. These must then also be adopted into the reader connection on the software side.
The baud rate of the reading devices can be changed with the tool 'Baltech id-engine explorer'. (See Baltech documentation: IdEngineExplorer.pdf)

Note: The tool 'Baltech id-engine explorer' only runs under Windows XP. It is not available for Windows CE. The baud rate is therefore not configurable under Windows CE.
Note: In the PLC a fast task is required for processing the incoming data. If the RFID device is connected to a COM port with a baud rate of 115,200 a cycle time of 1 ms is required (see section Reader interfacing)
Note: In order to configure the baud rate from the PLC, the following byte sequence can be transferred as a raw data block [ 0x 1C 00 09 06 00 01 03 00 02 xx xx - with xx xx representing the baud rate, e.g. 9600 baud: 96 units at 100 baud -> 0x 00 60 ]. Further information can be found in section 'Low level communication'. This is also possible under Windows CE, if a transfer with the currently set baud rate is possible.

Usage of virtual serial COM ports (USB)

If the device is connected via USB the corresponding Usb-To-Virtual-Com-Port driver has to be installed. This driver is already installed if it is about a Beckhoff Panel-PC. The SDK of the RFID device contains the driver too. The virtual COM port is displayed in the Windows device manager.

The Beckhoff TwinCAT 'Serial Communication' is used for the communication to driver. But neither a device is added to TwinCAT System Manager nor a mapping is done. Further information is to be found in the Documentation for the PLC library serial Communication.

Handling of the RFID reader

The library supports the standard settings for the Baltech communication. 'Host Operation' mode is supported. Other modes are not supported. The BRP (Baltech Reader Protocol) is used for internal access in 'Communication Mode' 'Normal Mode'. If raw data are sent via the low level communication option it is important to ensure that the above settings are correctly specified within the frame.

Note: It must be pointed out here that not all peculiarities of every supported RFID reader model can be named here. Therefore you are referred to the manufacturer’s own documentation for more detailed information.

Configuration

If encrypted transponder cards are used, the same key must be available in the RFID device. The Baltech RFID reader is configured once, i.e. the key only has to be specified once. For security reasons the key cannot be read from the device configuration. In line with the encryption of a transponder card a VHL file is stored in the device configuration. Several VHL files can be stored in order to be able to access different cards access without reconfiguration.

There are three options for transferring VHL file into the configuration of a RFID device.

Transponders

Suitable transponder cards for Baltech RFID devices are available from several manufacturers. If cards with encryption are to be used, Baltech offers preconfigured cards for this purpose.

Baltech Port Devices Driver Download For Windows 10 64-bit

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Baltech Port Devices Driver Download For Windows 10 Pro