How can we help you today?

Which Modbus function code used by the WRITE_VAR function communicating over Modbus/TCP?

Issue:
Which Modbus function code used by the WRITE_VAR function communicating over Modbus/TCP?

Product Line:
Modicon Controller, eNOC, ETY modules

Environment:
All

Resolution:
The WRITE_VAR function block over Modbus/TCP is using Modbus Function Code FC16. Even if you want to write a single register using WRITE_VAR it will be going to use FC16.

Schneider Electric USA

Users group

Discuss this topic with experts

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

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 an 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
  • Tech Support: 877-342-5173
  • Careers
  • Company Profile
  • Investors
  • Newsroom
  • Report a Misconduct
  • Product Documentation
  • Software and Firmware
  • Product Selector
  • Product Replacement
  • DigestPLUS Online Catalog
  • Industries
  • Partners
  • Schneider Electric Community
  • Events
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings