1
Install and connect
Run the installer, then use the wizard to connect each device by its protocol.
Software · Industrial and technical · Plant monitoring
Plantwarden
Your plant control room, ready to use
For integrators and small plants: live status, alarms and history of your machines in any browser on the local network.
$59VAT includedOne purchase · every use · updates included
Delivered as soon as we receive your payment and your details. Maximum delivery time: 12 hours.
- Secure payment with Stripe
- No subscription: pay once
- Updates included
- Invoice with every purchase
The problem
A control room costs thousands. Your client has a workshop
A commercial SCADA can cost more than the whole job. Building one from free parts eats days you cannot bill. Meanwhile the shop floor learns about a fault when something stops.
$1,850and up for an entry-level commercial SCADA for a single deviceSource: reliamag.com, "Best SCADA and HMI Software for 2026"; toolradar.com, checked Nov 9, 2026
$2,500-3,500for a commercial SCADA server, plus yearly supportSource: reliamag.com; toolradar.com, checked Nov 9, 2026
$59once, for all your clients, no subscriptionSource: Plantwarden price, NEROVEM
Today
Before: a quote that kills the job, or days spent assembling free parts for every client.
With Plantwarden
After: a plant screen with live values, alarms and history, running on a computer in the plant.
How it works
From a PLC to a live plant screen
2
Pick and adjust a template
Start from the plant view, the trends or the energy template and adapt it in the screen editor.
3
Watch the plant
Open it from any browser on the network, with alarms and history saved on the same computer.
What it does
Live plant view with alarms
Your plant on one plan, each machine with its live values. Alarms show the time, the level (warning or alarm) and keep a full history.
Reads your equipment
Connects to PLCs and devices over Modbus TCP/RTU, OPC UA, MQTT and Siemens S7, with a wizard for each protocol.
24-hour trends and history
See the last 24 hours at a glance. Everything is stored on your own computer, with no cloud.
Electricity dashboard
With an energy meter that speaks Modbus, follow consumption by line or board.
Your screens, your users
Adapt the templates in the screen editor, try everything first with the built-in simulator and give each person a password.
Compared with the alternatives
| Plantwarden | Commercial SCADA | Build it yourself (free) | |
|---|---|---|---|
| Price | $59 once | From about $1,850; servers $2,500-3,500 plus yearly support | Free |
| Time to first screen | Install, connect, pick a ready template | Depends on training and licensing | Days of building from scratch |
| Use with several clients | Included, all your clients | Check each license | Yes, but you rebuild it each time |
| Where your data lives | On the plant's own computer | Depends on the product | On your computer |
| Writing to the PLC | Off by default; enabled by hand, with a password, local network only | Varies by product | Whatever you build |
Requirements
- PC or mini-PC with Windows 10/11 or 64-bit Linux, on the plant network
- 4 GB of RAM
- Equipment that speaks Modbus TCP/RTU, OPC UA, MQTT or Siemens S7 (a USB-RS485 adapter for Modbus RTU)
- A modern browser on any computer in the network
What you get
- Installer for Windows and Linux
- The software with its source code and licenses
- 3 ready templates and the simulator
- Setup guide in English and Spanish
- License for all uses, with all your clients
- Updates included, no fees
Delivery
Delivered as soon as we receive your payment and your details.
Maximum delivery time: 12 hours.
Your details: the email for the licence and the system you will use it on. We write to you right away to confirm them.
Plantwarden
One price. Every use.
Use it in your business, install it for your clients or build it into your product. The only thing not included: reselling the software on its own.
$59VAT includedOne purchase · every use · updates included
Buy →
Delivered as soon as we receive your payment and your details. Maximum delivery time: 12 hours.
FAQ
Will it work with my PLC?
If your equipment speaks Modbus TCP/RTU, OPC UA, MQTT or Siemens S7, yes. We do not promise every PLC on the market: check the protocol in your equipment's manual.
Is it safe? Can it touch my machines?
It starts in supervision-only mode: it reads and warns, and does not write to the PLC. Writing is switched on by hand, with a password and only on the local network. It is not for safety functions such as emergency stops or protections.
Do I need internet?
No. It runs on your local network and keeps its history on the same computer.
Can I install it for my clients?
Yes. The license covers all uses, including your clients. Only reselling the software on its own is excluded.
How many variables and screens?
The license sets no limit. What you can run depends on the computer you install it on.
What support is included?
Written support by email for installation and the templates.
What if my equipment is not on the protocol list?
Many devices can be reached through a gateway that converts to Modbus or OPC UA. Ask us by email before you buy and we will tell you honestly if it fits.
Plantwarden
Questions before you buy? We answer.
Write to us and we reply within 48 working hours.
porfavor@nerovem.com