Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Notifications
Login / Register
Community
Community
Notifications
close
  • Forums
  • Knowledge Center
  • Events & Webinars
  • Ideas
  • Blogs
Help
Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Login / Register
Sustainability
Sustainability

We Value Your Feedback!
Could you please spare a few minutes to share your thoughts on Cloud Connected vs On-Premise Services. Your feedback can help us shape the future of services.
Learn more about the survey or Click here to Launch the survey
Schneider Electric Services Innovation Team!

Alarm values from LonWorks units in TAC Vista

Building Automation Knowledge Base

Schneider Electric Building Automation Knowledge Base is a self-service resource to answer all your questions about EcoStruxure Building suite, Andover Continuum, Satchwell, TAC…

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • Home
  • Schneider Electric Community
  • Knowledge Center
  • Building Automation Knowledge Base
  • Alarm values from LonWorks units in TAC Vista
Options
  • Bookmark
  • Subscribe
  • Email to a Friend
  • Printer Friendly Page
  • Report Inappropriate Content
Invite a Co-worker
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send Invite Cancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New Invite Close

Related Forums

  • Intelligent Devices Forum

Previous Next
Contributors
  • RobertAndriolo
    RobertAndriolo
  • PeterLarsen
    PeterLarsen
  • sesa150555
    sesa150555
  • Product_Support
    Product_Support

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague Invite
Back to Building Automation Knowledge Base
Options
  • Bookmark
  • Subscribe
  • Email to a Friend
  • Printer Friendly Page
  • Report Inappropriate Content
0 Likes
1707 Views

Link copied. Please paste this link to share this article on your social media post.

Trying to translate this page to your language?
Select your language from the translate dropdown in the upper right. arrow
Translate to: English
  • (Français) French
  • (Deutsche) German
  • (Italiano) Italian
  • (Português) Portuguese
  • (Русский) Russian
  • (Español) Spanish

Alarm values from LonWorks units in TAC Vista

Picard Product_Support
‎2018-09-06 03:06 PM

Last Updated: Guinan RobertAndriolo Guinan ‎2020-03-17 03:43 AM

Issue

Alarm values from LonWorks units in TAC Vista

Product Line

TAC Vista

Environment

  • Vista Workstation
  • LON devices
  • ASCs
  • Xenta 102-AX, Xenta 104-A, Xenta 121

Cause

Vista Workstation alarm objects can be used to monitor SNVT values from LON devices and alert the user when a value has gone outside of acceptable limits. For example, An alarm in TAC Vista if the nviSetpoint of a Xenta 104-A goes over 75ºF.

This could also be used on programmable controllers -- any point in the database -- to avoid having to make Menta programming changes in order to alarm a point.

The only issue with a Vista Server Change of state object is that the Vista Server will need to be running in order for the alarm to be received and actioned. 

If multiple change of state objects are to be used consideration must be taken into the interface type as these points will be polled every second to check the state so actions can be taken on an alarm condition. This can easily overload a Lonworks interface if it is already managing lots of messages. 

Resolution

  1. Create an object of the type "Change of state Dynamic SNVT"
  2. Right-click and go to properties. Click on the ALARM tab.
  3. Type in the alarm text for the Alarm.
  4. In this case, the alarm triggers if the temperature is over 75°F, so set the High limit to 75.
  5. Go to the Object tab and browse in the point that you want to monitor.
  6. In reference property select value. Click ok
  7. Go to the monitored point, right-click and select properties, change the watch setting to "watch"
Labels (1)
Labels:
  • TAC Vista
Tags (2)
  • Find more articles tagged with:
  • 1991
  • PeterLarsen20
Was this article helpful? Yes No
No ratings

Link copied. Please paste this link to share this article on your social media post.

To The Top!

Forums

  • APC UPS Data Center Backup Solutions
  • EcoStruxure IT
  • EcoStruxure Geo SCADA Expert
  • Metering & Power Quality
  • Schneider Electric Wiser

Knowledge Center

Events & webinars

Ideas

Blogs

Get Started

  • Ask the Community
  • Community Guidelines
  • Community User Guide
  • How-To & Best Practice
  • Experts Leaderboard
  • Contact Support
Brand-Logo
Subscribing is a smart move!
You can subscribe to this board after you log in or create your free account.
Forum-Icon

Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.

Register today for FREE

Register Now

Already have an account? Login

Terms & Conditions Privacy Notice Change your Cookie Settings © 2025 Schneider Electric

This is a heading

With achievable small steps, users progress and continually feel satisfaction in task accomplishment.

Usetiful Onboarding Checklist remembers the progress of every user, allowing them to take bite-sized journeys and continue where they left.

of