![]() ![]() The table below shows what value should be input for each number of stop bits you desire. ![]() Another method is to input the appropriate value that represents the number of stop bits into the VI. This will create an enumerated ring control that will pass the correct value to the VI for you. The best solution for this is to right-click on the input and create a constant. However, the input is an integer input and cannot take a value of 1.5 since this is a double. You can configure the number of stop bits to be either 1, 1.5, or 2, and it may seem intuitive to simply wire in this number to the stop bits input. One common cause of this error is wiring an incorrect value to the stop bits input of the VISA Configure Serial Port.vi. This includes the write commands themselves being sent to the device as it may not follow standard serial protocols. Please check your serial hardware and your device's manual to ensure that the settings being passed by NI-VISA to the underlying hardware driver match both the serial bus and the hardware specifications. Refer to the tables below for the standard and maximum supported serial baud rates for NI serial hardware.SolutionThis error is caused by unsupported values being passed to the hardware driver by NI-VISA. After you connect to your instrument or device, you can configure its properties. To connect to a VISA resource, specify its resource name or alias using visadev. For more information about the VISA resource name, see ResourceName. If an unsupported value was used, the Return Data field will return hex error code 0xBFFF001E. You can also find a device's resource name or alias from your VISA vendor's control software. It is also useful for modifying port parameters as well as controlling and monitoring serial interfaces. It is a self-developed program that gives the user a tool to setup and configure serial ports. The Return Data field should return no error. This utility allows users to connect to a serial port from the network. ![]() In the VISA Test Panel Configuration tab, enter the desired value into the Baud Rate field and select Apply Changes.Select the serial port of interest in Measurement and Automation Explorer) MAX and then Open VISA Test Panel.To check whether a baud rate is supported by NI-VISA, The standard driver on these operating systems does not support arbitrary baud rates. If you use NI-VISA on Linux or Mac OS, you usually are limited to the standard baud rates specified in this document. If the baud rate set is not supported by the serial port, NI-VISA will return an error saying the attribute is not valid. In LabVIEW, the baud rate is set using the VISA Configure Serial Port VI. Instead, the baud rate request passes directly to the device driver for the serial interface. ![]() NI-VISA itself does not limit the range of baud rates you use. ![]()
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