Controlling DTR RTS Lines On A Serial Port

[pflores]

Overview

This example demonstrates manually changing states of the DTR and RTS lines on a serial port.

Description

Property nodes are used to set the states of the DTR and RTS lines. An event structure is used to detect changes to two buttons that correspond to the DTR and RTS lines.

• Configure the Serial Port (optional). Make sure Flow Control is set to None.
• Create an event structure to detect change of value for the DTR and RTS buttons
• In the DTR Value Change state, create a property node with the VISA serial resource name. Click on the property node and select Serial Settings » Modem Line Settings » Line DTR State.
• In the RTS Value Change state, create a property node with the VISA serial resource name. Click on the property node and select Serial Settings » Modem Line Settings » Line RTS State.
• Close the VISA session

Requirements

Software:

• LabVIEW 2012 (or compatible)

Hardware:

• Device with serial interface

Steps to Implement or Execute Code

1. Open the VI "DTR_ RTS Serial Control_LV2012_NI Verified"
2. Choose the VISA Resource Name
3. Run the VI
4. Click to modify DTR and RTS status
5. Stop Execution

Additional Information or References

**This document has been updated to meet the current required format for the NI Code Exchange.**

[cacalderon]

Thank you!!!!

Very useful feature of the serial port.

[e.g.lll]

Thank you!!!!

Very useful feature of the serial port.