Industrial PLC — Linux-based

RevolutionPi

Name: RevolutionPi Industrial PLC
Brand: KunBus
Availability: InStock

The open, modular industrial PLC built on Raspberry Pi. Replace expensive NI hardware without sacrificing performance, reliability, or standards compliance. Full product line available through Meekee Automation, India.

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Hardware Catalogue

Full RevolutionPi Product Range

Modular, DIN-rail mounted industrial controllers. Click a category to expand. Mix base modules with I/O and gateway modules as your application demands.

Gateway & Fieldbus Modules

4 models

Connect via PiBridge — no additional wiring to the base module. Compatible with Connect 5, Connect S, and Core S. Not compatible with Connect 4, Connect SE, or Core SE.

RevPi Gate EtherCAT

Connects RevPi as an EtherCAT Slave to any EtherCAT master network.

Protocol	EtherCAT — Slave
Bus Connector	2× RJ45
Baud Rate	100 Mbit/s (max.)
I/O Data	512 Bytes IN / 512 Bytes OUT
Connection	PiBridge overhead connector
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

EtherCAT Slave 100 Mbps

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RevPi Gate EtherNet/IP

Connects RevPi as an EtherNet/IP Adapter to Rockwell, Allen-Bradley, and other scanner networks.

Protocol	EtherNet/IP — Adapter (Slave)
Bus Connector	2× RJ45
Baud Rate	100 Mbit/s (max.)
I/O Data	512 Bytes IN / 512 Bytes OUT
Connection	PiBridge overhead connector
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

EtherNet/IP Adapter 100 Mbps

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RevPi Gate PROFINET IRT

Integrates RevPi as a PROFINET IRT Device into Siemens TIA Portal and other PROFINET networks.

Protocol	PROFINET IRT — Device
Bus Connector	2× RJ45
Baud Rate	100 Mbit/s (max.)
I/O Data	512 Bytes IN / 512 Bytes OUT
Connection	PiBridge overhead connector
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

PROFINET IRT Device 100 Mbps

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RevPi Gate PROFIBUS

Connects RevPi to legacy PROFIBUS DP master networks. Ideal for upgrading brownfield installations.

Protocol	PROFIBUS DP — Slave
Bus Connector	D-SUB 9F
Baud Rate	12 Mbit/s (max.)
I/O Data	244 Bytes IN / 244 Bytes OUT
Connection	PiBridge overhead connector
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

PROFIBUS DP Slave 12 Mbps

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I/O Expansion Modules

6 models

All modules connect via PiBridge overhead connector — plug-and-play, no additional wiring. Up to 10 modules per base unit. All operate at 24 V DC, IP20, −20°C to +60°C, DIN-rail.

RevPi DIO

Combined digital I/O expansion — the standard choice for general-purpose signal control.

Digital Inputs	14 \| 24 V DC \| IEC 61131-2 Type 3
Digital Outputs	14 \| 24 V DC
Connection	PiBridge (overhead, plug-and-play)
Includes	PiBridge plug + 14-pole PCB connectors
Power	24 V DC \| IP20
Certifications	CE (EU Declaration of Conformity)

14 DI 14 DO 24V DC

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RevPi DI

Dedicated digital input module for sensors, proximity switches, and push-buttons.

Digital Inputs	16 \| 24 V DC
Connection	PiBridge (overhead, plug-and-play)
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

16 DI 24V DC

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RevPi DO

Dedicated digital output module for actuators, solenoid valves, and indicator lamps.

Digital Outputs	14 \| 24 V DC
Connection	PiBridge (overhead, plug-and-play)
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

14 DO 24V DC

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RevPi MIO

Mixed analog & digital I/O — covers both signal types in a single module for compact builds.

Digital I/O	4 channels (configurable IN or OUT)
Analog Inputs	8 channels
Analog Outputs	8 channels
Connection	PiBridge (overhead, plug-and-play)
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

4 DIO 8 AI 8 AO

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RevPi AIO

High-precision analog I/O with RTD temperature inputs. Galvanically isolated channels eliminate ground loops.

Analog Inputs	4 ch \| ±10 V, 0–10 V, 0–5 V, ±5 V, 0–20 mA, 4–20 mA, ±25 mA
Analog Outputs	2 ch \| ±10 V, 0–10 V, 4–20 mA, 0–20 mA
RTD Inputs	2 ch \| Pt100 / Pt1000 \| −165°C to +600°C (0.5°C steps)
Isolation	Galvanically isolated inputs, outputs & RTD
Standard	Protected per EN 61131-2 (burst, surge, ESD)
Connection	PiBridge (overhead, plug-and-play)
Power	24 V DC \| IP20 \| ≤80% RH
Certifications	CE — Made in Germany

4 AI 2 AO 2 RTD Galv. Isolated

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RevPi RO

Relay output module for switching mains loads and high-current devices. Built-in relay wear monitoring.

Relay Outputs	4 — potential-free NO contacts
Switching	5 A @ 250 V AC / 30 V DC (per relay)
Indicators	4 relay status LEDs + 1 operational LED
Monitoring	Integrated relay wear-level tracking
Connection	PiBridge (overhead, plug-and-play)
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

4 Relays 5A / 250V AC NO Contacts

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Base Modules

7 models

Latest

RevPi Connect 5

Flagship all-in-one PLC on Raspberry Pi CM5 — highest compute performance in the RevPi range.

CPU	BCM2712 — Quad-core Cortex-A76, 2.4 GHz
RAM	4 GB or 8 GB LPDDR4X
Storage	32 GB eMMC
Ethernet	2× Gigabit LAN
USB	2× USB-A 3.2 \| 1× USB-C (image)
Display	μHDMI 4K
Serial	RS-485 \| CAN FD (opt.)
Wireless	WLAN (optional variant)
Expansion	Up to 10 modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE, UL, cUL, RoHS — Made in Germany

CODESYS Linux RT DIN Rail −20°C to +60°C

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RevPi Connect 4

Proven all-in-one PLC on Raspberry Pi CM4 with dual GbE and broad expansion ecosystem.

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	2 / 4 / 8 GB DDR4
Storage	8 GB or 32 GB eMMC
Ethernet	2× Gigabit LAN
USB	2× USB-A 3.2 \| 1× μUSB (image)
Display	μHDMI 4K
Serial	1× RS-485
Expansion	Up to 10 modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE, UL, cUL, RoHS — Made in Germany

CODESYS Linux RT DIN Rail −20°C to +60°C

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RevPi Connect S

Cost-optimised CM4S PLC for wired industrial environments. No wireless module.

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	1 GB DDR4
Storage	8 / 16 / 32 GB eMMC
Ethernet	2× LAN
USB	2× USB-A 2.0 \| 1× μUSB (image)
Display	μHDMI 4K
Serial	1× RS-485
Expansion	Up to 10 modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

CODESYS Linux RT DIN Rail

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RevPi Connect SE

CM4S PLC with enhanced storage for data-heavy edge applications. Note: not compatible with gateway modules.

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	1 GB DDR4
Storage	8 / 16 / 32 GB eMMC
Ethernet	2× LAN
USB	2× USB-A 2.0 \| 1× μUSB (image)
Display	μHDMI 4K
Serial	1× RS-485
Expansion	Up to 10 I/O modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

CODESYS DIN Rail No Gateway Support

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RevPi Core S

Pure compute base. No onboard I/O — pair with DI / DO / AIO / MIO modules for a custom configuration.

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	1 GB DDR4
Storage	8 / 16 / 32 GB eMMC
Ethernet	1× LAN
USB	2× USB-A 2.0 \| 1× μUSB (image)
Display	μHDMI 4K
Onboard I/O	None — expansion modules required
Expansion	Up to 10 modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

CODESYS Linux RT DIN Rail

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RevPi Core SE

Compute base with enhanced storage. No onboard I/O. Note: not compatible with gateway modules.

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	1 GB DDR4
Storage	8 / 16 / 32 GB eMMC
Ethernet	1× LAN
USB	2× USB-A 2.0 \| 1× μUSB (image)
Display	μHDMI 4K
Onboard I/O	None — expansion modules required
Expansion	Up to 10 I/O modules via PiBridge
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

CODESYS Linux RT DIN Rail No Gateway Support

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RevPi Flat S

CM4S PLC in a slim flat housing for tight enclosures. Features 4 LAN ports and 2× RS-485. Non-modular (no PiBridge).

CPU	BCM2711 — Quad-core Cortex-A72, 1.5 GHz
RAM	1 GB DDR4
Storage	32 GB eMMC
Ethernet	4× LAN
USB	2× USB-A 2.0 \| 1× μUSB-OTG (image)
Display	— (no HDMI)
Serial	2× RS-485
Onboard I/O	1 DO \| 1 AI \| 1 AO
Expansion	Non-modular — no PiBridge
Power	24 V DC \| IP20
Certifications	CE — Made in Germany

Slim Housing 4 LAN Ports CODESYS Non-Modular

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Technical Specifications

RevPi Connect 5

Flagship base module — reference specifications

CPU	BCM2712 (CM5) — Quad-core Cortex-A76 @ 2.4 GHz
Memory	4 GB or 8 GB LPDDR4X RAM
Storage	32 GB eMMC (industrial grade, soldered)
OS	Raspberry Pi OS (Linux Debian), real-time kernel available
Connectivity	2× GbE \| 2× USB-A 3.2 \| 1× USB-C (image) \| μHDMI 4K
Serial	RS-485 \| CAN FD (optional variant)
Wireless	WLAN (optional variant)
Expansion I/O	Up to 10 modules via PiBridge (DI, DO, DIO, AIO, MIO, RO, Gateway)
Fieldbus	PROFINET IRT, EtherNet/IP, EtherCAT, PROFIBUS, Modbus TCP/RTU, OPC-UA (via gateway modules)
Power	24 V DC \| IP20
Operating Temp	−20°C to +60°C (IEC 61131-2 compliant)
Mounting	35 mm DIN-rail (EN 60715)
Certifications	CE, UL, cUL, RoHS \| Made in Germany

Key Features

Why RevolutionPi

IEC 61131-3 via CODESYS

Program in Ladder, FBD, ST, SFC — the same languages used on conventional PLCs. Minimal retraining required.

Modular Expansion

Snap on I/O and gateway modules — up to 10 per base unit. Configure exactly the I/O your application needs, nothing more.

All Major Fieldbuses Covered

EtherCAT, PROFINET IRT, EtherNet/IP, PROFIBUS, Modbus, OPC-UA. One platform integrates into any plant topology.

Open Linux Platform

Full Linux OS access. Run Python, Node-RED, Docker alongside PLC logic. No vendor lock-in on software.

Industrial-Grade Hardware

CE & UL certified, DIN-rail housing, −20°C to +60°C, IP20. Built and tested for real factory environments.

Fraction of NI Cost

Comparable I/O performance and fieldbus support at significantly lower hardware and software cost than NI CompactRIO.

Comparison

Why Replace NI with RevolutionPi?

Engineers switching from National Instruments find RevolutionPi covers 95% of use cases at a fraction of the investment.

❌ National Instruments / NI CompactRIO

❌ High hardware acquisition cost (INR 3–15L per system)
❌ Expensive proprietary LabVIEW licenses
❌ Vendor lock-in with limited third-party integration
❌ Long import lead times for India
❌ Costly annual maintenance contracts
❌ Specialist LabVIEW programmers required

            ✅ RevolutionPi via Meekee Automation
            ✅ Significantly lower hardware cost, same I/O capability
✅ Free CODESYS runtime — IEC 61131-3 standard languages
✅ Open Linux OS — Python, MQTT, REST APIs, Docker
✅ In-country stock, fast delivery from Chennai
✅ No mandatory maintenance contracts
✅ Large global community, extensive documentation

          

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