Shopping for a PLC often means balancing the controller platform, the condition of the unit, and what you are willing to spend. The four options in this roundup show that range: a compact Beckhoff module at $86.97, a Mitsubishi FX3U series PLC at $116.96, a Schneider Electric Modicon M221 at $129.60, and a tested used Omron NX102-9000 at $499. Your decision should start with what you need the processor to do, and then work backward to the price and condition that make sense for your machine.
Quick Take
If you want a brand-new controller with a clearly stated 40 I/O count, the Schneider Electric TM221C40R Modicon M221 is the standout. If you are assembling a control system from modules and you want the lowest listed price, the Beckhoff EL3064 is the entry point. If you can use a used processor and want the top-spec option in this set, the Omron NX102-9000 covers that role. The Mitsubishi FX3U series PLC sits in between as a new controller with a mid-range price.
Listed Price Comparison
| Product | Listed Price | Bar |
|---|---|---|
| Schneider Electric TM221C40R Modicon M221 | USD 129.60 | |
| Mitsubishi FX3U series PLC | USD 116.96 | |
| Beckhoff EL3064 PLC module | USD 86.97 | |
| Omron NX102-9000 PLC | USD 499.00 |
Decision Matrix
| Use Case | Likely Pick | Why It Fits |
|---|---|---|
| New controller with a clear 40 I/O spec | Schneider Electric TM221C40R | Listed as new, with the I/O count spelled out in the title. |
| Lowest listed price for a module | Beckhoff EL3064 | At $86.97, it is the least expensive item in this set. |
| New controller in the mid-price range | Mitsubishi FX3U series PLC | Priced at $116.96, it lands between the Beckhoff and Schneider. |
| Used, tested controller with a higher budget | Omron NX102-9000 | Listed condition is used, and the listing says used items get power-on testing and basic function checks. |
Product Notes
Schneider Electric TM221C40R Modicon M221 Logic Controller
This is the only controller in the roundup that spells out a full 40 I/O count right in the product title. It is listed as brand new and carries a price of USD 129.60. If you need a Modicon M221 platform and want a new unit with a concrete I/O specification, this is the one to key on. The flip side is that 40 I/O points is a fixed spec; if your application is smaller, you are paying for capacity you may not use. It also costs more than the Mitsubishi and Beckhoff options, so it is not the pick for a strictly low-budget project.
Mitsubishi FX3U Series PLC
The listed price for this Mitsubishi FX3U series PLC is USD 116.96, which puts it between the Beckhoff module and the Schneider controller. It is described as new and is a processor module, so it fits into a PLC lineup rather than sitting at the very top of the price range. One reason to consider it is that you get a Mitsubishi-named PLC at a price below the Schneider unit. The listing does not make the exact FX3U suffix clear at a glance, so the main appeal is simply a new Mitsubishi PLC at a mid-range price.
Beckhoff EL3064 Programmable Logic Controller Module
At USD 86.97, the Beckhoff EL3064 is the lowest-priced item in this set, and it is listed as new. The title describes it as a programmable logic controller module, so it is the most component-like option here. That makes it a good fit if you are building a control system around Beckhoff modules and need an additional EL3064 module. The limitation is that a module is not the same as a standalone controller; you will likely need the surrounding Beckhoff hardware to make use of it. For a shopper who needs a complete controller in one purchase, this module is only a piece.
Omron NX102-9000 PLC
The Omron NX102-9000 is the only used controller in this roundup, and its USD 499.00 price is the highest of the four. The listing notes that used and refurbished items undergo power-on testing and basic function checks, which is a concrete detail that sets it apart from the other used-condition scenarios. If you need an Omron NX-series controller and your budget can stretch, this is the most likely match. The trade-off is the used condition and the large price gap between it and the new options. If you are required to use new equipment, this listing would not fit the requirement.
Final Recommendation by Use Case
For a new controller with an explicit 40 I/O count, choose the Schneider Electric TM221C40R Modicon M221 at USD 129.60. For a module-based approach at the lowest listed price, the Beckhoff EL3064 at USD 86.97 is the one to start with. If you want a new PLC in the middle of the price range, the Mitsubishi FX3U series PLC at USD 116.96 is a reasonable pick. And if you need a tested used controller and can handle the higher end of the budget, the Omron NX102-9000 at USD 499.00 is the option that checks that box. Start with your I/O and condition requirements, then let the listed prices guide you.
