How can we help you today?

171CBU9809x Unity Momentum PLC System Words %SW82 & %SW83 explained.

Issue
This resolution explains System Words %SW82 and %SW83 in a Unity Momentum PLC.

Product Line
171CBU98090
171CBU98091.

Resolution
The explanation of %SW82 and %SW83 in Unity Pro Help is incorrect.  This is a Unity Help documentation issue.

Unity Pro V11 Help incorrectly states System Words %SW82 and %SW83 are used for Message Management in the M340, M580, Unity Momentum, Atrium, Premium, and Quantum ranges.   Where,
%SW82 = Number of Modbus messages sent or received on serial port 1, updated at 1 second period.
%SW83 = Number of Modbus messages sent or received on serial port 2, updated at 1 second period.

The correct definition of System Words %SW82 and %SW83 are:
For the ranges M340, M580, and Unity Momentum, these system words are routing message counters.
For the Quantum product range, these system words contain serial port counters.

Schneider Electric Canada

Explore more
Range:
Users group

Discuss this topic with experts

Visit our community and get advice from experts and peers on this topic and more
Explore more
Range:

Need help?

Need help?

Product Selector

Product Selector

Quickly and easily find the right products and accessories for your applications.

Get a Quote

Get a Quote

Start your sales inquiry online and en expert will connect with you.

Where to buy?

Where to buy?

Easily find the nearest Schneider Electric distributor in your location.

Help Center

Help Center

Find support resources for all your needs, in one place.

  • Help and Contact Center
  • Contact Sales
  • Find our Offices
  • Where to Buy
  • Careers
  • Company Profile
  • Investors
  • Newsroom
  • Report a Misconduct
  • Product Documentation
  • Product Selectors
  • Software and Firmware
  • Product Substitution and Replacement
  • Blog
  • Events
  • Schneider Electric Community
  • Sustainability
  • Legal Information
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings