busarider29
Lifetime Supporting Member
CX9020 would be an overkill for my project but CodeSys sounds promising. With the method you described, the mobile HMI app can communicate with the PLC from afar over cellular connection too?
Out of the box? No. You would also require an LTE USB stick for that. The CX9020 is about as inexpensive as you're going to get in the Beckhoff line, but it's a full feature PLC and embedded PC in one, and CodeSys based (TwinCAT). Anything cheaper that is an actual PLC, then you likely would need to look at Automation Direct PLCs. For basic home projects, they are fine and cheap too. Software is free. However, they are not Codesys based and as far as I know, they only have Ladder Diagram for programming boo, nothing else.