Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI

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

Subscribe

Add to Del.icio.us

DIGG this!


Feedback


Yes No

Related Categories

Products

Development Topic

Application Type

Related Links - Developer Zone

Related Links - Products and Services

Testing your 485 Serial Port in 2 Wire (Half-Duplex) Mode in LabVIEW.

3 ratings | 2.67 out of 5
Print

Downloads

Filename: 2wiremode485.vi
Requirements: View

This program is designed to test the functionality of a 485 Serial Port in two-wire (half-duplex) mode. To put your port in two-wire mode you must short the T+ line with the R+ line, and the T- line with the R- line. This is done by connecting pin 4 to pin 8, and pin 5 to pin 9. Do this for two ports. In order to verify that the ports are working, perform a "loopback" by connecting 4/8 on port 1 to 4/8 on port 2, and 5/9 on port 1 to 5/9 on port 2.

Requirements


Filename: 2wiremode485.vi

Software Requirements


Application Software: LabVIEW Full Development System 7.0
Language(s): LabVIEW

Hardware Requirements


Hardware Group: Serial
Hardware Model: PCI-485/2
Driver: NI-Serial 1.5

 
3 ratings | 2.67 out of 5
Print

Reader Comments | Submit a comment »

 

Legal
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/).