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Document Type: Example Program
NI Supported: Yes
Publish Date: Sep 6, 2006


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9-Bit Serial Writing in LabVIEW

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Filename: 9_bit_write.vi
Requirements: View

This VI demonstrates how to write 9-bit serial information. Normally, the data bit limitation is 8 bits, but the parity bit can be used as a ninth bit when manipulated correctly. In particular, a VISA Property Node has the ability to toggle the parity bit between mark and space, allowing the user to define at exactly what logic level the ninth bit should be output.

To run this VI, simply identify the COM port and baud rate desired. The array of booleans allows you to define what data to output in the regular 8 data bits as well as a ninth bit that controls the parity bit. Using the operate tool, change the value of the boolean LEDs to alter the data pattern.

Related Links:
KnowledgeBase 0XFA0EEO: How Can I Do 9-bit Serial Transmission Instead of 7 or 8 bits?

Requirements


Filename: 9_bit_write.vi

Software Requirements


Application Software: LabVIEW Full Development System 6.1
Language(s): LabVIEW

 
6 ratings | 3.17 out of 5
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This example program (this "program") was developed by a National Instruments ("NI") Applications Engineer. Although technical support of this program may be made available by National Instruments, this program may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this program with each new revision of related products and drivers. THIS EXAMPLE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).