/challenges-projects/design-challenges/experimenting-with-industrial-automation/b/blog/posts/the-academic-approach-expansion-module-on-modicon-m251The Modicon M251 has powerful features to connect each element of automation and control remote actuators or take information from remote sensors. In other hand, this does not mean that is local control is not allowed. The device takes advantages of en-USTelligent Community 12