In search of an affordable PLC with specific features: +24v power supply, 2 analog inputs, 8 digital outputs (preferably with relays), 6 digital inputs, and 1 analog output (or 3 extra digital outputs). In need of easily accessible programming software, preferably free. Age of the PLC is not a concern, as it will be used to control an old generator at a hobby club. A fellow club member is considering a more expensive custom Arduino board, but believes it will be cost-effective and reliable. Budget is a total of £150. Alternatively, if anyone has a Siemens 6ES72141BG400XB0 or similar PLC in their possession that they are willing to sell at a reasonable price, please reach out.
Although Automation Direct Click is a popular choice, availability may vary depending on your location. It is important to verify its availability in your region before making a purchase.
Considering purchasing a MicroLogix 1100 off eBay? While it offers 6 DOs, you might find yourself needing more. The MicroLogix 1400 is a great alternative with more outputs, but getting those last two DOs could be challenging. Have you thought about trying an Arduino Opta, an Arduino-based PLC? Keep in mind that using relays externally may increase the overall cost.
If you are in need of a GX Developer alternative, consider purchasing a clone FX available for around $50 on Amazon. This cost-effective option offers 8 inputs, 6 outputs, 2 analog inputs, and 2 analog outputs.
diat150 mentioned considering an Automation Direct Click PLC, but was unsure about its availability in their region. The Click CPU with Digital is attractively priced, even internationally. However, the analog in/out modules are quite costly, putting them out of reach for many with a price tag of around £200 for a 4-channel analog input.
Parky recommended purchasing a clone FX for around $50 if you have GX Developer. This clone FX, available on Amazon, offers 8 inputs, 6 outputs, 2 analog inputs, and 2 analog outputs. Click on the link for more information.
If budget and simplicity are your key factors, consider looking into the Siemens LOGO! series. They're essentially PLCs mixed with Relay modules and are very affordable, especially if you go for a second-hand or refurbished unit on eBay. It's worth noting that LOGO! Soft Comfort software isn't free, but it's often included when you buy the PLC, and strictly speaking, it's a one-time cost. Meanwhile, if your club member is already adept with Arduino, it might still be a viable option. They're reliable with the right coding and could serve the purpose well under your requirements, providing you have the relevant interfaces to handle your digital and analog I/O. Taking time to figure out the learning and set up curve for each and weighing it up against the budget might help you make the decision.
Considering your specifications and budget range, I'd suggest looking into the Click Series PLCs from Automation Direct - they might just meet your requirements. They are quite cost-effective and come with free easy-to-use programming software. Moreover, their versatility and reliability are decent. As for your member's Arduino suggestion, while they can indeed be a reliable option, PLCs are generally more robust for industrial environments. By the way, if you're still interested in Siemens, check out eBay or other online second-hand platforms for used units to fit your budget.
I'd highly recommend looking into the Allen Bradley Micrologix 1000 series. You should be able to find used ones that cover all your requirements within your budget. However, programming software is not free and you may need to factor this into your costs. As for your club member's custom Arduino board idea, it could indeed offer cost-effectiveness and reliability; Arduino's wide user base means there is ample community support available, including free programming software and libraries. However, if the PLC is intended for critical applications with the generator, I'd trust a name-brand PLC over a custom Arduino setup for its proven reliability. Do keep an eye on eBay and similar sites for deals on the Siemens PLC you mentioned!
Have you considered the Siemens S7-1200 series? They have models that might fit your specs, especially with the integrated features and robust support from the TIA Portal software, which has a free version for basic programming. Also, it's worth looking into the WAGO or Schneider Electric PLCs, as they sometimes offer great value for hobby projects and the software is accessible. And if you can find a used unit within your budget, it could be a solid investment for your club's generator control! Good luck!
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Answer: - The specific features required include a +24v power supply, 2 analog inputs, 8 digital outputs (preferably with relays), 6 digital inputs, and 1 analog output (or 3 extra digital outputs).
Answer: - The preference is for easily accessible programming software, preferably free of cost.
Answer: - The PLC will be used to control an old generator at a hobby club, and the age of the PLC is not a concern as long as it meets the specified requirements.
Answer: - A fellow club member is considering a more expensive custom Arduino board but believes that the affordable PLC will be cost-effective and reliable for the intended use.
Answer: - The budget for the affordable PLC is a total of £150.
Answer: - If anyone has a Siemens 6ES72141BG400XB0 or a similar PLC available for sale at a reasonable price, please reach out to discuss potential purchase.
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