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I used an automation direct click for mine and a headless cmore hmi with an hdmi port to a TV. Works pretty good. Definitely more expensive but I went a bit overboard.Considering doing this, even though it may be way more difficult and expensive. As an instrumentation technician I like the thought of robust industrial conductivity analyzers, and maybe pid control for a loop of a return valve and a small level transmitter in the overflow. Not to mention the expansion factor with controlling multiple frag tanks and quarantine tanks. Trying to determine the most efficient PLC to use in this application.
I’m using a lot of analog inputs from devices telling me water temp, water flow, water level, and amps of heaters and pumps(using current transducers). They have some 10 amp rated output cards I use for my heaters and some 3 amp rated output cards I use for other devices. I use two outputs in series for heaters so they are fail safe if one of the outputs fail on.Wow that seems like a good deal, are you running any AO or AI or just DI and DO?
Depending on which plc you pick. The cheapest one with Ethernet(like 97 dollars) has a max limit of 8 expansion modules.This seems like it will work for everything I want to do. Is there a limit to the number of i/o?
That’s awesomeI attempted to go the PLC route and quickly found it more complex than I wanted to develop. Ended up utilizing Raspberry PI, Widgetlords PI-SPI-DIN boards, and Node-Red to manage. It can certainly be done but takes some know-how (or willingness to experiment) and time.
Your setup looks great! I have more experience with PLC’s so it made more sense for me to stick with what I knew. I did look at the raspberry pi setups tho.I attempted to go the PLC route and quickly found it more complex than I wanted to develop. Ended up utilizing Raspberry PI, Widgetlords PI-SPI-DIN boards, and Node-Red to manage. It can certainly be done but takes some know-how (or willingness to experiment) and time.