Troubleshooting Serial (COM) Port Problems
If the foot pedal of the WavPlayer does not respond, this may indicate a serial (COM) port problem. While most computers have a free serial (COM) port, the port is not always truly available. In some cases a board mounted inside the computer (or PCMCIA card for laptops) may be using the port associated with the serial (COM) port. In addition to this, each serial communications device needs an interrupt request number (IRQ) and these numbers are limited in a PC. The end result is that although things look okay, you may still be having trouble with your communication port.
On most desktop PCs, you will find two serial (COM) ports. Older systems often have one 9-pin serial port and one 25-pin serial ports (these are D-shaped connectors on the back of the PC). They are typically configured as COM1 and COM2. On laptop computers, you will usually find only one serial (COM) port configured as COM1. Often when connecting an internal modem or other communication device, the serial ports will be reconfigured to a different COM port (such as COM3 or COM4)
If the WavPlayer functions properly when using a mouse but does not respond when using the foot pedal, follow the steps below to troubleshoot the problem.
- Using ActiveXperts Serial Port Component with ASP.NET (C#) ActiveXperts Serial Port Component is a software development kit (SDK) that enables the user to communicate to a device over a serial interface. Such a device can be: a weight indicator, a modem, a scanner, or any other device that is equiped with a serial port.
- After you have completed your transaction you should close the port using MyCOMPort.Close method. Writing into Serial Port. Here is a short snippet of code for writing into serial port. Here we are sending an ASCII 'A' to the Serial Port. The full Source file ' SerialCommWrite.vb ' can be downloaded from our Github Page.
1. Check to see which serial (COM) ports are recognized by Windows
Right-click on the 'My Computer' icon on your desktop. Select Propertiesfrom the drop down menu that appears. This will display the Properties window. Select the Device Manager tab at the top of the Properties window. From the Device Manager list, click the ‘+’ next to Ports. The Device Manager should look similar to the one below.
Note which COM ports are recognized by Windows. The WavPlayer foot pedal will need to use one of the recognized COM ports. The next thing to check is to see what COM ports are being used by your modem.
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2. Modem COM port Usage
In the Device Manager shown above, click the ‘+’ next to Modem to view which modems are recognized by Windows. The Device Manager will display modems similar to below.
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Double-click on the available modem or modems. Doing this will display the Modem Properties window. Select the Modem tab from the Properties window. You will see a screen similar to the one below.
The Modem Properties window displays the COM port being used by the modem. The COM port used by the WavPlayer foot pedal can NOT be the COM port being used by the modem.
Next check to see if your mouse is using a COM port.
3. See if you have a serial port mouse or a PS/2 mouse.
A serial port mouse may be using the resources of two COM ports. In the Device Manager, click the ‘+’ next to Mouse. Your device manager will look similar the one below.
Your mouse connects to your computer either via a serial (COM) port or a special PS/2 connector. A PS/2 mouse plugs into a small circular connector on the computer. A serial mouse plugs into one of the serial ports (D-shaped connectors with 9 pins). A PS/2 mouse does not use communications port resources on your computer, so you should have no problems. If you have a PS/2 mouse, you may skip to step 4.
A serial port mouse is often connected to COM1. Because the mouse is active at all times, COM1 cannot be used with the WavPlayer foot pedal. In addition, COM1 shares computer resources with COM3, so it is very likely that you will also not be able to use COM3 for your WavPlayer foot pedal. This still leaves you with COM2 or COM4, as long as a fax modem or other communications device does not use them.
You may consider converting to a PS/2 mouse if possible to free up a serial port. Check with a computer technician to see if you can change to a PS/2 mouse. If you do this, you can use the port that was being used by your mouse.
4. Check your Interrupt Request Settings (IRQs)
In the Device Manager, the word Computer appears at the top of the list as shown highlighted below.
Double-click on the Computer setting and the following Computer Properties window will appear.
On the left side of the Computer Properties windows, the IRQ numbers are shown. Check to see what device is shown by IRQ settings 03 and 04. In the example above, COM1 is using IRQ 04.
NOTE: The serial (COM) port used by the WavPlayer foot pedal cannot share an IRQ setting with another device. This means that if you see two devices by IRQ 04, for example, there is a port conflict and the WavPlayer foot pedal cannot use this port.
It doesn’t matter which IRQ setting the serial (COM) port is using as long as it is not being shared with another device.
5. Configure the WavPlayer COM port setting.
Open the WavPlayer software by clicking Start | Programs | Bytescribe | WavPlayer. Click the Ports menu as shown below.
You must select a COM port that is recognized by Windows (step 1) and is NOT used by your modem (step 2) and is NOT used by your mouse (step 3) and does NOT have a conflict with another device (step 4). Once you have set the COM port setting, open a file in the WavPlayer and try using your foot pedal. If you still have problems, continue with the next steps.
6. Look for other programs that might be using a serial (COM) port.
Check to see if you have software installed that may be using your serial (COM) port even if it is not being used right now. Examples of programs that may use the serial ports are programs for Un-interruptible Power Supplies (UPS), Digital Camera connectors, Digital Voice Recorder connectors, External Modems and many other similar software programs. If you determine that there are such programs that use the serial ports, you may need to uninstall these programs if they are causing a conflict.
7. Other considerations.
- Serial Ports were not recognized in step 1.
If windows did not recognize any serial (COM) ports in step 1, but you do have 9-pin or 25-pin serial ports on the back of your computer, the serial (COM) ports may be disabled in your systems BIOS settings. Because the number of devices that can be added to a computer is often limited, unused ports are sometimes disabled to free up resources for other devices. If Windows does not detect your serial (COM) ports, you may need to have a computer technician check to see if the ports are disabled in the BIOS settings.
- Serial (COM) Ports are detected by Windows and there are no conflicts, but the foot pedal still does not work.
- 25-pin serial ports.
There may be a problem with the serial port itself. Usually a serial port is connected to the motherboard of a computer by a small cable. Have a computer technician check to see that the serial port cables are properly connected to the motherboard. Also possibly try replacing the cable to see if the cable is faulty or a non-standard cable.
Many older computers have 2 or more serial ports. Often one port is a 9-pin port (usually COM1) and a second is a 25-pin port (usually COM2). If you have an available 25-pin serial (COM) port, you will need to purchase and 25-pin to 9-pin adapter (from Radio Shack or similar). The port should work fine with the adapter.
Serial Port UtilityIt is a compact and easy-to-use multi-in-one TLS tool, also known as friendly serial port debugging assistant in Chinese. For the personnel engaged in development and it work, its cross platform compatibility function and practicability are very satisfactory. With its flexible communication port or TCP and UDP protocol options, both novices and professionals can expect to easily establish a connection and send data transmission Lose. In addition, it is widely used in a variety of serial ports, such as electronic total station and DMX equipment. The software can even create structured data ranging from the simplest to the most complex ZigBee / XBee API data framework, GIS Garmin data package and other tools. In addition to this, it also supports the functions of TCP, TCP and UDP server, as well as the functions of TCP server and UDP server. Users do not even need to configure, it will automatically identify the available COM ports, and neatly placed in the drop-down list for users to choose from.
It is worth mentioning that the serial port utility has a very good user interface. Unlike the serial port tools on the market, all information received by the software can be displayed in text or hexadecimal format. Users can make use of various other configuration settings, such as display options, cycle time interval, sending data bits and stream type. At the same time, the software integrated checksums calculator can also be used to check the integrity of its data and generate logs to track each action. In turn, users will be able to send commands and files through the selected port.
- Software name:
- Serial port utility v3.9.1 installation free version (with installation tutorial)
- Software size:
- 8.6MB
- Update time:
- 2020-07-01Download now
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Serial port utility crack installation tutorial:
1. Download the resources in the site after decompressing, find the friendly serial debugging assistant installation package, double-click to open;
2. Choose simplified Chinese as the language;
3. After you agree to the installation terms, select the installation directory of the software and click next;
4. Here is the creation of shortcut. Click next;
5. After a little waiting, the software will be installed automatically. Click Finish to exit the installation wizard;
6. Then we punch in the software and find the authorization under the file;
7. Enter [sa56w-ur34v-7ky76-xb31f-hzpau] in the open authorization window and click to activate it;
8. The serial port utility has been successfully activated and can be used without restriction;
Using the tutorial
1、 Connecting serial port hardware
1. Connection
Connect the ch340 to the USB interface of the computer. This is a ch340 module that you can get on the Internet for more than a dozen.
2. Inspection
Find the device manager of the computer: open the start menu and find the computer;
3. Inspection
Find the “device manager” of the computer: right click and select “device manager” in the drop-down menu.
4. Inspection
Serial Port Communication Asp Network
Find the “device manager” of the computer and check whether there is the corresponding hardware connection in the “device manager” of the computer. If not, we often want to download the hardware driver of ch340, you can search Baidu, there are a lot of such drivers, you can download an installation at will, on the connection. If you connect correctly, you should have the following results.
2、 Software configuration
1. Open the friendly serial port assistant;
2. Configure “com” port: the corresponding com slogan in the device manager should be consistent.
3. Configure “baud rate”: it should be consistent with the communication protocol. There are also “stop bits” and so on. Most of these parameters are related to the communication protocol. Please refer to the relevant traffic regulations. But in most cases, only the baud rate is configured.
4. If open successfully, there will be a prompt at the bottom of the interface: com opened. If it fails to open, check whether the serial port is occupied.
Asp.net Serial Port Communication
5. If you want to close the serial port, click the square button; if you want to clear the receiving buffer, click the broom button. Other functions such as receive settings and send settings are similar. It can send hundreds of kilobytes of data, receive can also display a large amount of data, the most important thing is not card, but does not support virtual serial port. It is not recommended to use gexi Fenghuo serial port assistant. The software receiving 20 or 30 K bytes of data is critical to the card, and the startup is slow.
Software introduction
1. Click the shortcut icon to enter the main interface of the software, including the setting of serial port, port, receiving setting, sending setting, etc.
2. The file includes new, close, save as, authorization management, log record, view current log, open log folder, etc.
3. Editing includes add port, delete port, start, pause, stop, clear, etc.
4. The view includes horizontal, grid, custom, quick setting, window top, etc.
5. Options include serial port, receive, send, log, display, etc.
The above is how to use the serial port utility brought by Xiaobian? Serial port utility installation and use of the full content of the text tutorial, I hope to help you, more content please continue to pay attention to developeppaer.