MPPTracker is a monitoring software which can monitor multiple solar charger controller via serial port at the same time. The major functions of MPPTracker monitoring software include data log for devices, alarm messages, fault messages, and parameter setting for devices. Download source files - 10.4 Kb; Introduction. This tutorial will attempt to describe how to write a simple device driver for Windows NT. There are various resources and tutorials on the internet for writing device drivers, however, they are somewhat scarce as compared to writing a “hello world” GUI program for Windows.
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.
If the device-specific driver is distributed through Windows Update, you can manually update the driver by using Device Manager. For more information about how to do this, see update drivers in Windows 10. If the device is not yet connected, first install the device-specific driver, such as by using the appropriate installer.
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- The USB driver is outdated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
Drivers Mpp Port Devices Adapter
- 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 '188.8.131.52 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
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 '184.108.40.206' 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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HP Universal Print Driver (UPD) is an intelligent print driver that supports a broad range of HP LaserJet printers and MFPs. Developed by Hewlett-Packard, it combines a general purpose driver (UNIDRV or PSCRIPT) and HP proprietary extensions. HP UPD simplifies driver deployment and management. This advanced print driver has the ability to discover HP printing devices and automatically configure itself to the device capabilities (e.g., duplex, color, finishing, etc.).
HP Universal Print Driver is a Microsoft Windows solution that provides two modes of operation, traditional and dynamic. In traditional mode, the HP UPD behaves similarly to traditional print drivers. In dynamic mode, it provides discovery, auto configuration, and management features that are particularly well suited for mobile computer users.
HP’s Universal Print Driver is based on Microsoft’s universal core drivers UNIDRV and PSCRIPT. These core drivers are not usable until device specific information is used to inform the core driver of the actual device settings and capabilities. To accomplish this task, a universal printing dialog box is inserted before the standard print setup dialog box. The universal printing dialog box allows users to choose a recently used device, enter a device IP address, search for local print devices, or choose a device from a predefined list.
Regardless of the device discovery method used, the Microsoft core driver is updated accordingly and the new device information is then reflected in the normal print driver user interface.
HP provides three different Universal Print Drivers: PCL5, PCL6 and emulation PostScript. Custom default values can be assigned with the HP Driver Configuration Utility. HP UPD is available as a Microsoft Windows 32-bit or 64-bit driver and automatically configures itself to one of 35 currently supported languages based upon the language of the host system.
In dynamic mode, searching for devices is accomplished using the mDNS discovery protocol (aka Bonjour). The mDNS protocol performs satisfactorily for devices residing on the same subnet only. Users will need to enter IP addresses for remote devices unless they have been previously discovered or are available on a managed printers list. Whether discovered, entered, or chosen, the HP universal printing dialog box submits SNMP requests to the target device’s IP address.
Using enterprise auto configuration (EAC) and a bidirectional communications port, SNMP requests ascertain a device’s configurations and capabilities. The results are used by HP UPD to update the print driver table in the Windows registry to accurately reflect the target device’s capabilities. The results are also cached (CREG) and the recently discovered device list is updated to provide an easy method for future selection. In dynamic mode, HP UPD is considered to be a virtual device. Therefore, the new device instances do not appear in the Printers folder.
In traditional mode HP UPD is bound to a print queue and behaves like a normal printer driver with the addition of bi-directional communications for device queries and real time print job status. This mode can be chosen during driver installation, or on the dynamic mode universal printing dialog box. The traditional mode bypasses the universal printing dialog box and goes directly into the typical print setup dialog box.
Automatic configuration does not occur in traditional mode; but, users can select manual updates to ensure the device’s capabilities are properly represented. The HP UPD can be installed either in dynamic mode, traditional mode, or both, depending on user requirements.
(INSTALL.EXE, MPA, AD, DDU, DCU)
HP UPD includes driver management features allowing IT administrators to pre-configure, deploy, and manage the HP driver software. Management tools within the HP UPD include INSTALL.EXE with command line options, the HP MPA Tool, Active Directory Templates, Driver Configuration Utility, Driver Deployment Utility and HP Web Jetadmin.
HP UPD installer allows some driver default settings to be modified via command line options. Some of these switches will change the system-wide behavior of the HP UPD, while other changes are specific to a single print queue.
HP MPA Utility
The HP MPA utility pre-configures some driver default settings in a managed HP UPD environment. Settings made within the HP MPA utility control the HP UPD at a user level. The resulting policies are maintained for every printer attached to the HP UPD. They are global user policies that affect HP UPD users.
HP UPD Active Directory Templates
Drivers Mpp Port Devices Terminal
An HP UPD Administrative Template(an Active Directory Template) can be added to create a Group Policy Object to manage the user UPD capabilities. The settings apply to any queue that uses the HP UPD. Care should be taken when locking configuration settings as the user is unable to change a locked setting.
HP Driver Configuration Utility
The HP Driver Configuration Utility (DCU) is a Windows application used to edit the configuration file associated with a particular driver. The configuration file controls the print driver settings and takes effect when the driver is installed.
HP Driver Deployment Utility
DDU is used to pre-configure a print driver for deployment. When the package is run on the client computer, the new configuration file configures the printer driver after it is installed, and does not interfere with WHQL certification. DDU contains the standalone DCU utility inside the package and is launched when Pre-configure driver is selected from the DDU tool.
Beyond driver configuration, HP UPD also employs managed printer lists (MPLs) and managed print policies (MPP) to control access to devices and capabilities. These technologies are used with HP UPD in dynamic mode. If MPLs are used, then searching for devices is unnecessary. Users are presented with a predefined list of devices from which to choose. MPLs are XML files that can be created manually, with the HP MPA utility, or exported from HP Web Jetadmin. When the HP UPD is activated, it begins by searching the network for the MPL file as shown in Figure 6. MPPs are used to control which users have access to device features like color, duplex, etc. By default, HP UPD assumes that the HP MPA is installed on a server named managed-print. As a result, HP UPD searches the network for this server to find HP Managed Print Policies or HP Managed Printer Lists.
Status Notification Popups (SNPs)
Drivers Mpp Port Devices Replicator
The driver also includes status notification pop-ups during print submission that inform the user on device status, print job status, and consumable levels. This is a graphical popup window that displays a dashboard of toner supply levels, links for reordering consumables, and an instant support landing page for that particular HP device model. When the HP UPD is selected for printing, it will attempt to communicate directly with the printer to gather status and job information during printing. By querying the printer through SNMP get commands, network traffic is kept to a minimum and is only present during printing. If desired, the SNPs can be disabled.