Embedded PLC Guide

We’ll take a close look at some popular Embedded PLC lines.



Lets start with the basic stats we keep for all PLCs.  The following is a deeper look at Embedded PLCs and some of their differentiating features.

Product Line
Velocio.net eAce$49+
Velocio.net eBranch$69+
Divelbiss Micro Bear$99
Tri-PLC Nano-10$149
Entertron Smart-PAK / PAK Plus$195
Tri-PLC FMD$229
Tri-PLC F$429

What are Embedded PLCs?

Embedded PLCs are programmable logic controllers designed for applications such as volume OEM products, cases which require specialized electrical signals and automated test.  They are often used when creating a standard product line, as opposed to more typical PLCs (which are great at applications that you’ll only need to make a couple of).  They typically provide the brains, communication hardware and standard IO for your application, then require custom hardware to tailor it to your application.  An example: you may plug your Embedded PLC into a custom printed circuit board that includes heavy duty relays for your application.



Since Embedded PLCs go into OEM products, size plays an important role in deciding which PLC line to use. Dimensions include headers (where applicable).  These headers may recess into your product, reducing the PLC’s impact on your product’s size.



This is what connects the Embedded PLC to your custom circuitry.  Headers allow you to plug Embedded PLCs directly into your custom boards.  Terminals require you to string them to your custom board using additional wires.





Velocio uses Ladder Logic & Flow Chart Languages. It is tag based and allows Subroutines.








Splat uses a basic text based language.  It comes with a helpful tutorial.









Triangel Research uses a basic ladder logic language.









Divelbiss uses a basic ladder logic language.









Entertron uses a basic ladder logic language.

Cost vs IO:



Design Age


Looking at the circuitry reveals a lot about the Embedded PLC’s design.  Modern systems primarily use surface mounted components.  When you see a good deal of through-hold or socketed parts, you should be concerned about the age of the platform.

In Closing

Many things go into selecting the right Embedded PLC for the job.  Hopefully this helps you find the product that’s right for you.  In the Basics section at the top, you can follow the links to find brochures and download free software from each of the Embedded PLC manufacturers featured.