Fewer things make me reach for a spreadsheet faster than a project with "Mitsubishi PLC" scrawled across a quote. I'm a procurement manager at a 40-person systems integration company, and I've spent the past six years tracking more than $220,000 a year in control components. The biggest lesson? The price on the screen is rarely the price on the invoice. This FAQ covers the questions I wish more buyers asked before they ordered.
Here's what I'm going to answer:
Honestly? Anywhere from $200 to several thousand dollars. Entry-level FX3U and FX5U compact PLCs I've quoted have landed around $200-$800. Modular Q-Series or R-Series CPUs with I/O modules can run from $1,500 to $5,000+, depending on the exact part numbers. There's no universal "mitsubishi plc price" because every system is a different combination of CPU, power supply, I/O, and communication modules. I want to say the average hardware line item on our recent projects is around $1,200, but don't quote me on that. Better: design your exact configuration, then ask for an itemized quote. A vague request gets a vague price.
Everyone told me to read every line. I didn't listen until a cheap quote bit me. A few years ago, we had two quotes for a Q-Series CPU module. Supplier A came in at $4,150. Supplier B came in at $3,780. I almost went with B until I calculated the full cost: $340 for the programming cable, $290 for the software license transfer, $180 for a "documentation and handling" fee. That totaled $4,590. Supplier A's quote included the cable, the software transfer, and freight. That's an $810 difference hidden in fine print. A lesson learned the hard way. Now I ask the same question every time: what's NOT included?
A-Series is the legacy workhorse. You'll find A1S, A2A, A3, and A3V modules in existing plants, and if you're supporting an old production line, you sometimes have no choice. For new installations, I'd avoid it. Replacement parts come from brokers, repair houses, and surplus inventories, and prices swing wildly. I've seen A-Series CPU modules listed for $150 on one site and $700 on another, with no clear condition description. That's a red flag. If you must keep a Mitsubishi A-Series PLC running, get a written condition statement, a return policy, and a test report. In my experience, migrating an old A-Series project to an FX5U isn't a one-for-one swap; you'll need engineering time. Budget for that, not just the module.
Used Mitsubishi PLCs can be tempting. The price is lower, but so is the safety net. I've bought a "surplus" Q CPU from a broker that looked clean and didn't power up. The return policy covered DOA, not unknown faults, so we lost $600 to shipping and restocking. On the other hand, I've bought used FX modules that ran for years. The difference is the source. Ask for test data, anti-static packaging, and a clear warranty. Rebuilt units are usually safer because the vendor can tell you exactly what they tested. Speed, price, warranty. Pick two. And if a deal seems too good to be true, assume it's missing something important.
Every PLC project has a list of things that don't show up on the main hardware quote: programming software (GX Works2 or GX Works3), programming cables, power supplies, spare fuses, terminal blocks, Ethernet cards, field wiring, commissioning time, and training for your techs. In our procurement records, those extras usually add up to 15-20% over the hardware subtotal. That's a planning number I've built from our own orders, not an industry standard. Plus, don't forget lead time. Need a module within a week? You might pay an urgent-handling fee. Which is to say, the total cost isn't just dollars—it's your time, your crew's time, and the cost of a late startup.
Treat quotes like a menu, not a final bill. I build a spreadsheet with columns for part number, quantity, unit price, cables, software, manuals, shipping, warranty, and lead time. Then I compare line by line. In Q2 2024, we got three quotes for the same FX5U setup and the prices varied by almost 40%. The lowest quote was missing the programming software and the EMC filter. The middle quote included everything and had a 30-day warranty. If a price looks too good, ask for the exact part number and verify it independently. Also ask about after-sales support. Does the vendor know the difference between an FX3U and a Q-Series CPU? If not, that's a deal-breaker.
This is where first-time buyers trip up. Mitsubishi PLCs generally use GX Works2 for FX and Q series, and GX Works3 for FX5U and R series, though I might be misremembering some version overlaps. If you're budgeting, ask three questions: Is the software license included? Is it a one-PC license? Can it be transferred if you already have a license on your laptop? That's not a small item, especially if your team has a seat already. But don't assume your old programming software will open a new CPU project. That's how you get a "free" PLC that needs a $1,200 software upgrade. Not ideal, but avoidable.
Can I get the full project file with comments? A used or surplus Mitsubishi PLC is a risk if the previous programmer left no comments, no password, and no documentation. You'll spend hours trying to understand the logic. Even for new PLCs, ask the vendor for the firmware version and whether they can provide a program backup after commissioning. One of the best vendors I've worked with listed all fees upfront, and their total looked higher than the competitors'. But guess what? It cost less in the end. Per FTC guidelines, claims should be truthful and substantiated, so ask for written spec sheets. I approved that vendor's rush fee and immediately thought, could I have negotiated? I didn't relax until the delivery arrived on time and correct. That's the feeling a good quote should give you: certainty, not surprises.