Turn your Modbus TCP and RTU devices into cloud-connected dashboards. Monitor PLCs, energy meters, drives, and sensors from any browser — no on-premise SCADA server needed.
60-day free trial · All features included · No credit card required
Modbus is the most widely deployed industrial protocol — PLCs, energy meters, VFDs, flow meters, and temperature controllers all speak it. A Modbus SCADA platform reads data from those devices and converts raw register values into live dashboards, alarm triggers, trend charts, and reports.
Traditional Modbus SCADA systems required a dedicated on-premise server, client software on every workstation, and ongoing IT maintenance. SCADA Cloud by ModbusSimulator is fully cloud-hosted: access everything from a web browser — no servers, no client installs, no VPN.
A lightweight edge connector runs on a local PC or Raspberry Pi at your site, polls Modbus TCP/RTU devices on your LAN, and forwards data securely to the cloud. Engineers configure tags, dashboards, and alarms through the browser interface.
Everything your Modbus monitoring project needs — without the on-premise SCADA complexity
Drag-and-drop dashboard designer with gauges, trend lines, value panels, and alarm indicators. Each widget links to a specific Modbus register. Watch your PLC data update live.
Set high/low threshold alarms on any Modbus tag. Email notifications on alarm trigger and clear. Acknowledge alarms from any browser. Full alarm history log.
Every Modbus register value is logged automatically. Query any time range, overlay multiple tags, and export raw data to CSV for further analysis.
Connect Ethernet-connected Modbus TCP devices by IP. Connect serial RS-485 Modbus RTU devices via the edge connector with configurable COM port, baud rate, and parity.
Monitor multiple plants from a single account. Each site is isolated with its own devices, tags, dashboards, and user permissions. Ideal for system integrators.
TLS encryption end-to-end. Edge connector uses outbound-only connection — no inbound firewall rules. Role-based access: Admin, Operator, Viewer with full audit log.
For Modbus TCP: enter device IP and port 502. For Modbus RTU: install the edge connector on a local PC, configure COM port, baud rate (e.g. 9600), and parity settings.
Map each Modbus register to a tag. Set register type, address, data type (INT16, FLOAT32, etc.), scaling, engineering unit, and alarm limits.
Open your dashboard in Chrome, Firefox, Edge, or Safari on any device. Live register values update in real time. Share the URL with operators or managers.
| Feature | Modbus TCP | Modbus RTU |
|---|---|---|
| Connection | Ethernet (IP + Port 502) | RS-485/RS-232 via edge connector |
| Function codes | FC01, FC02, FC03, FC04, FC05, FC06, FC15, FC16 | FC01, FC02, FC03, FC04, FC05, FC06, FC15, FC16 |
| Data types | INT16, UINT16, INT32, FLOAT32, BCD, Boolean | INT16, UINT16, INT32, FLOAT32, BCD, Boolean |
| Byte order | Big-endian, Little-endian, swap variants | Big-endian, Little-endian, swap variants |
| Polling interval | 1–60 seconds per tag | 1–60 seconds per tag |
| Multiple devices | Unlimited Modbus TCP devices | Multiple Unit IDs on same RS-485 bus |
Common use cases: Energy meter monitoring (Schneider PM, ABB B21, Eastron SDM), PLC process data (Siemens, Delta, Mitsubishi with Modbus TCP), VFD monitoring (ABB, Danfoss, Schneider drives), solar inverter dashboards (SMA, SolarEdge, Fronius), and water/wastewater pump monitoring over Modbus RTU.
A Modbus SCADA platform reads data from Modbus TCP and RTU devices and presents it as live dashboards, alarms, and historical trends. SCADA Cloud by ModbusSimulator is cloud-hosted — no on-premise server required. Configure devices and tags through a browser, and live Modbus data appears in your dashboards within minutes.
Yes. Modbus TCP devices connect by IP address and port. Modbus RTU serial devices connect via the edge connector installed on a local PC with RS-485/RS-232 COM port access. Both protocols work simultaneously — mix TCP and RTU devices on the same dashboard.
There is no hard limit on tags. Each tag maps one Modbus register to a dashboard widget, alarm rule, or trend. Configure register type, address, data type, scaling, and polling interval per tag. The 60-day free trial includes unlimited devices, tags, dashboards, and historical data.
For monitoring, alarming, trending, and remote visibility — yes. SCADA Cloud handles everything a traditional Modbus SCADA does for those functions without the server overhead. The PLC handles real-time control logic; SCADA Cloud handles visibility and alarming.
Yes. The edge connector initiates outbound HTTPS connections only — no inbound firewall ports at your site. All data is TLS-encrypted. Access is protected by authentication and role-based permissions. Every tag write is logged with user identity, timestamp, and value.
60-day free trial. No credit card. Connect your first Modbus device and see live data on a dashboard today.