Specifications
Model
Forlinx FCU1501 (Basic and Extended versions)
Product Type
Fanless industrial embedded computer / IoT gateway for data acquisition and protocol conversion
SoC
Rockchip RK3506J
CPU
3x Arm Cortex-A7 cores up to 1.5 GHz plus an Arm Cortex-M0 real-time core
System Memory
256 MB or 512 MB DDR3
Storage
8 GB eMMC flash
Networking
2x 10/100 Mbps Fast Ethernet RJ45 (auto-sensing, no PoE)
Wireless
Dual-band Wi-Fi and Bluetooth 5.0 with dual antenna interfaces
Cellular
Optional 4G LTE Cat 1 via Nano SIM slot
USB
1x USB 2.0 Type-A (also used for OS flashing)
Serial — Basic
4x RS485, 2x RS232, 1x CAN FD / CAN 2.0B
Serial — Extended
8x RS485, 2x RS232, 2x CAN FD / CAN 2.0B
Serial Notes
RS232 is multiplexed with RS485; every channel has an independent digital ground
Digital Input — Basic
2x DI (dry contact)
Digital Output — Basic
2x DO relay, normally open, 5 A 250 VAC / 5 A 30 VDC
Digital I/O — Extended
8x DI and 8x DO
Debug
USB Type-C debug port
Indication
8x LEDs: power, run, error, 3x 4G signal, 2x user-defined
Supervision
Hardware watchdog, internal battery-backed RTC, built-in buzzer
Recovery
“RESET KEY” for one-click network parameter recovery (customisable)
Power Supply
9 V to 36 V DC wide input via terminal block (rated 12 V / 3 A)
Protection
Reverse-polarity and overcurrent protection; DC Out follows the input voltage
Mounting
DIN rail
Design
Rugged fanless construction
Overview
The Forlinx FCU1501 is a rugged fanless industrial embedded computer and IoT gateway built on the Rockchip RK3506J, which combines three Cortex-A7 cores running Linux workloads with a Cortex-M0 core for real-time work. Forlinx targets high-reliability data acquisition and protocol conversion rather than AI inference — the board exists to sit between fieldbus devices and an upstream system.
It ships in two variants that share a chassis but differ in interface density. The basic version provides 4x RS485, 2x RS232, 1x CAN FD, 2x digital input and 2x relay output; the extended version grows to 8x RS485, 2x RS232, 2x CAN FD and 8x DI plus 8x DO. RS232 channels are multiplexed with RS485 and Forlinx isolates the digital ground on every channel, which matters when a gateway bridges equipment from different vendors.
Networking is dual 10/100 Fast Ethernet plus dual-band Wi-Fi and Bluetooth 5.0 with two antenna interfaces, and an optional 4G LTE Cat 1 module fits a Nano SIM slot. The 9 to 36 V DC input arrives through a terminal block with reverse-polarity and overcurrent protection, and the unit carries a hardware watchdog, a battery-backed RTC, a buzzer and a one-click network-parameter recovery key — the set of features that lets it run unattended in an automation cabinet.
Key Benefits
Up to 8x RS485, 2x RS232 and 2x CAN FD in one DIN-rail box removes the need for multiple converters. Isolated digital ground per channel prevents ground loops when bridging equipment from different suppliers. Relay outputs rated 5 A 250 VAC drive loads directly instead of through an interposing relay. 9-36 V DC with reverse-polarity and overcurrent protection tolerates vehicle and industrial supply rails, and the hardware watchdog plus battery-backed RTC and one-click network recovery support fully unattended operation.
Applications
Industrial data acquisition and SCADA front-ends, Modbus and fieldbus protocol conversion, energy and utility metering gateways, rail and transportation monitoring, building automation controllers, remote telemetry over optional 4G Cat 1.
Request a Quote — FORLINX FCU1501 — FANLESS RK3506J INDUSTRIAL IOT GATEWAY WITH CAN FD
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