Usb Serial Controller Driver Model Uc-232a
Dee Muskopf
This timeout error can be caused by configuring the TCP/IP functions incorrectly, and can often be cleared without detriment, as long as the data is being received. If the data is not being received, there are several troubleshooting steps below to mitigate this error. Follow this link to find troubleshooting steps.
If you are doing Modbus over a serial connection, please make sure that the connection between the serial pins on each end is correct. Try to change the pin to right the right one. You can check it from NI MAX as well by doing a self-test.
What he most likely meant: if you use a USB-to-serial cable, where "serial" usually means RS232, then it has a male D-Sub9 connector and on the target you have that as well. When connecting two male connectors you need a cable or an adapter. These can wire the pins 1:1 or switch RX/TX (null modem). Should that be the cable that you used before you switched to USB, then it's proven to work, unless the actual ports on both sides are RS485.
The heat plate comes with a cable that has a RS232 female connection, so I didn't need an additional connector. If such usb to serial dongles works fine with modbus communication than maybe this new dungle is DOA or its driver is not compatible with modbus.
I am not sure about the compatibility, because there are not any articles about compatibilities from NI side, therefor you can contact ATEN support and ask them question about this kind of compatibilities, they may have relevant documentation or solutions in this case.
For instance, the HP-400 model is supposed to have RS232. Sure, with the device having a female connector and the adapter cable being male you would simply plug it. I would do the same. But it still could mean that you would have to use a null modem cable that switches RX and TX signals. Good, that the user manuals of that company tell you everything you need to know...
In the old days of personal computers, one of the primary connections available was the RS-232 serial port. Apart from the parallel port, it was the primary means to connect an external device. The connector was reduced from a 25-pin connector to a 9-pin connector, but RS-232 ports remained present on every computer for many years. Built-in RS-232 ports featured direct mapping to memory and worked at a high priority. Data practically flowed directly to and from the software that was accessing the serial port.
In 1996, the Universal Serial Bus (USB) standard was introduced as a replacement for the serial connector and other connector types that were typically found on the back of computers. The USB provided smaller connectors and more data throughput than the serial and parallel interfaces it replaced.
USB devices have high throughput, but they use a shared data bus. Data is wrapped up and transferred in packets. To handle the packets and move data in and out of the program accessing the USB device, a software driver is needed. The software driver sits between the hardware and the computer program you are using, and it must be installed and working correctly.
For USB to RS-232 chips, there are two primary manufacturers: Prolific and FTDI. Because off-brand chips with poor drivers are unreliable, Campbell Scientific recommends and currently sells a cable using an FTDI chip (part number 17394). We chose this cable because it uses a chip that has a certified driver available on Windows Update. (The older cables were silver in color and did not have a driver available for Windows beyond version 7.)
I have seen several cases where old cables could no longer handle 115200 baud, but the cables still worked on low baud rates. There have been many more cases where a USB cable stopped working half-way through a day in the field.
In addition to lowering your latency time, I also recommend disabling the Selective Suspend option for your cable. The Selective Suspend option allows Windows to put your hardware to sleep, which can result in corrupt data packets. To disable the Selective Suspend option, clear the checkbox for the Enable Selective Suspend field on the Advanced Settings window for your device.
We have a couple older CNC machines that use rs232. The onboard storage is very small so they will request the file in chunks from the host PC. I want to update there computers but with phasing out of serial ports, my best option is a USB to serial adapter. Is this a viable option for machines that require this connection to run for hours at a time?
For such an application, I would recommend spending extra to buy an industrial rated interface with electrical isolation. For PCs that have card slots, you can purchase RS232 cards. Industrial models are available with electrical protection built in.
I have an issue where my prolific USB to Serial adapter stopped being detected as 'n "Ports (Com & LPT)" device. It keeps on detecting it is a " USB Composite" device, even after installing the correct Windows drivers downloaded directly from the manufacturer's website. Uninstalling it and reinstalling it doesn't help.
I get the same result on another computer also running Windows 10. It simply refuses to recognize the adapter as a USB to Serial device anymore and keeps on detecting it as a "USB Composite" device as soon as you plug it in after uninstalling it and restarting Windows. Windows also claims that it finds no better driver than the one currently installed when doing a driver search, even after installing the manufacturer drivers.
Hi,
I'm facing a weird problem with my USB to serial-adapter. The adapter has a Prolific-2303 chipset. The COM port is not getting detected by the Windows 7 laptop.
I've installed the drivers and restarted the computer after installing the drivers.
I've run the driver update from the device manager and updated the drivers.
I also tried to install the COM port manually from the device manager.
I checked the adapter by connecting it to another desktop computer and the COM port is getting detected.
This document contains the hardware compatibility notes forFreeBSD 6.1-RELEASE on the AMD64 hardware platform (also referredto as FreeBSD/amd64 6.1-RELEASE). It lists devices known to work onthis platform, as well as some notes on boot-time kernelcustomization that may be useful when attempting to configuresupport for new devices.
Note that there are two names for this architecture, AMD64 (AMD)and Intel EM64T (Extended Memory 64-bit Technology). 64-bit mode ofthe two architectures are almost compatible with each other, andFreeBSD/amd64 should support them both.
In many respects, FreeBSD/amd64 is similar to FreeBSD/i386, interms of drivers supported. There may be some issues with 64-bitcleanliness in some (particularly older) drivers. Generally,drivers that already function correctly on other 64-bit platformsshould work.
FreeBSD/amd64 is a very young platform on FreeBSD. While thecore FreeBSD kernel and base system components are generally fairlyrobust, there are likely to still be rough edges, particularly withthird party packages.
This section describes the devices currently known to besupported by with FreeBSD on the AMD64 platform. Otherconfigurations may also work, but simply have not been tested yet.Feedback, updates, and corrections to this list are encouraged.
Where possible, the drivers applicable to each device or classof devices is listed. If the driver in question has a manual pagein the FreeBSD base distribution (most should), it is referencedhere. Information on specific models of supported devices,controllers, etc. can be found in the manual pages.
Note: The device lists in this document are beinggenerated automatically from FreeBSD manual pages. This means thatsome devices, which are supported by multiple drivers, may appearmultiple times.
All major firmware revisions (2.x, 3.x, 4.x and 5.x) aresupported, however it is always advisable to upgrade to the mostrecent firmware available for the controller. Compatible Mylexcontrollers not listed should work, but have not been verified.
With all supported SCSI controllers, full support is providedfor SCSI-I, SCSI-II, and SCSI-III peripherals, including harddisks, optical disks, tape drives (including DAT, 8mm Exabyte,Mammoth, and DLT), medium changers, processor target devices andCD-ROM drives. WORM devices that support CD-ROM commands aresupported for read-only access by the CD-ROM drivers (such ascd(4)). WORM/CD-R/CD-RW writingsupport is provided by cdrecord(1), which is a part ofthe sysutils/cdrtools port in the PortsCollection.
The sis(4) driver supports SiliconIntegrated Systems SiS 900 and SiS 7016 based Fast Ethernetadapters and embedded controllers, as well as Fast Ethernetadapters based on the National Semiconductor DP83815 (MacPhyter)chip. Supported adapters include:
A range of USB peripherals are supported; devices known to workare listed in this section. Owing to the generic nature of most USBdevices, with some exceptions any device of a given class will besupported, even if not explicitly listed here.
The standard line of adjustable cavity test weights simplifies routine balance testing in production environments. The weight cavity includes a threaded aperture that can be adjusted with a gentle twist, requiring no specialized equipment. The weights are produced according to International Organization for Standardization (ISO) 9001 guidelines for quality measurement systems, conform to U.S. Food and Drug Administration (FDA) standards, and fulfill International Organization of Legal Metrology (OIML) R111 metrological recommendations. The knob-style test weights range from 1 mg to 20 kg, are manufactured of stainless steel, resist dust and moisture, and can be cleaned with alcohol. They are available as individual weights or as a set.
Smart measurement instruments in hazardous locations communicate diagnostic and process data through the highway addressable remote transducer (HART) protocol, yet often that information is unused because many HART instruments communicate only their analog signals. The wireless THUM adapter, designed to operate in hazardous areas, retrieves this formerly stranded information to provide insight for planned maintenance. It is especially useful with safety instrumented systems (SIS), as well as in refineries and chemical plants. The adapter converts the wired HART signal to WirelessHART and transmits data to a gateway, which in turn connects to the host systems via an industry-standard wired connection, usually Modbus or Ethernet. The adapter connects directly to the wired devices via threaded conduits. The device now meets FM Approvals and Canadian Standards Association (CSA) explosionproof standards.
7fc3f7cf58