Revolution Pi Flat S

(Item no. 100371)

Flat all-in-one DIN-rail computer based on the Raspberry Pi Compute Module 4S  with Debian-based Linux – edge gateway with wireless and I/O on board. With the free edge agent thin-edge.io, the Flat S connects to Cumulocity in a few minutes.

Reading meters and machines

Two separate RS485 lines let you run two Modbus RTU buses at once, for energy meters, inverters and more.

Connecting your network devices

A built-in switch links up to three Ethernet devices. The fourth port goes to your company network.

Measuring and switch on site

Read a pressure or level sensor, send a setpoint, or switch an alarm lamp with the relay.

Going wireless

Use WLAN where there is no cable, and Bluetooth for nearby sensors.

Staying secure

A built-in TPM 2.0 chip protects your keys and your connection to Cumulocity.

Service remotely

Update software, change settings and fetch logs from Cumulocity, without a site visit.

Technical Data

• Raspberry Pi Compute Module 4S, Broadcom BCM2711, quad-core Arm Cortex-A72 @ 1.5 GHz, passive cooling
• 1 GB LPDDR4 RAM, 32 GB eMMC flash
• Hardware Interfaces
  • 4 × RJ45, 10/100 Mbit/s: LAN0 as single port, LAN1 with 3 ports – switched or as single ports (DSA); two or four separate MAC addresses
  • 2 × RS485 (RJ14 socket and 3-pole plug), up to 500 kBit/s, galvanically isolated, termination switchable by software
  • WLAN 2.4 / 5 GHz, Bluetooth 5.0 (BLE), RP-SMA socket for external antenna
  • 1 × relay output (potential-free, 2 A @ 30 V DC)
  • 1 × analog input (0–10 V DC or 0–20 mA, 16 bit);
  • 1 × analog output (0–10 V DC, 12 bit, max. 10 mA, short-circuit proof)
  • 2 × USB-A (max. 1 A in total);
  • 1 × Micro-USB (only for writing the eMMC image)
  • 6 bi-color LEDs, 5 of them freely programmable
• TPM 2.0 (Infineon OPTIGA™ TPM SLB 9670)

How the Connection to Cumulocity Works

thin-edge.io is a free, open-source software agent. It runs directly on the RevPi and needs only few resources. Every program on the device can hand over data to it. For example, this can be a Python script, a Node-RED flow or a soft PLC.

• Data: send measurements, events and alarms
• Device management: check device health, restart the device and run shell commands
• Software: install, update and remove packages remotely
• Configuration and logs: fetch and change files from Cumulocity
• Child devices: show connected machines or meters as separate devices
• Remote access: open secure SSH or VNC sessions via Cumulocity Cloud Remote Access

An All-in-One Device

Unlike the RevPi Core and Connect devices, the Flat S has no system bus for expansion modules. Instead, it combines the most common interfaces in one compact housing. Do you need more inputs and outputs or fieldbus gateways? Then choose the RevPi Connect S or the RevPi Core S.

Which Device Fits You?

Choose the RevPi Flat S if you want a compact device with many network ports, two RS485 lines, wireless and basic I/O on board.

Choose the RevPi Connect S if you want to add I/O modules or connect to fieldbus networks later.

Getting Started in 5 Steps

1. Plan your setup: Decide which devices you connect via Ethernet, RS485 or WLAN.
2. Install and power up: Mount the device on a DIN rail. Then connect 24 V DC and Ethernet.
3. Install thin-edge.io:
   curl -fsSL https://thin-edge.io/install.sh | sh -s
4. Connect to your Cumulocity tenant:
   sudo tedge cert create --device-id <your-device-id>
sudo tedge config set c8y.url <your-tenant>.cumulocity.com
sudo tedge cert upload c8y --user <your-user>
sudo tedge connect c8y
   Onboarding options change over time. Always check the current thin-edge.io documentation.
5. Send your first data:
   tedge mqtt pub te/device/main///m/environment '{"temperature": 21.3}'
   Your device and its first value now show up in Cumulocity Device Management.

Step-by-step guide: Revolution Pi tutorial: Cumulocity with thin-edge.io

Resources

• RevPi Flat S in the Revolution Pi shop
• Tutorial: Install thin-edge.io and connect to Cumulocity

Partner: Revolution Pi (by KUNBUS GmbH, Germany)

Device on Partner Website