RPAC-2858M
Introduction
The RPAC-2858M is a next-generation Linux-based Win-GRAF programmable automation controller (PAC) developed by ICP DAS. It is equipped with a 1.6 GHz quad-core Cortex-A53 processor to run the Linux operating system and uses a built-in micro SD card to provide storage space for applications, images, and data.
With built-in Win-GRAF SoftLogic, it supports multiple IEC 61131-3 standard programming languages, offering flexible control program development. It features a wide range of communication interfaces such as Ethernet, RS-232/485/422, and USB, and supports protocols including OPC UA, Modbus, DCON, and user-defined protocols. The RPAC-2858M also supports dual-host redundancy; if the main controller fails, the backup controller can quickly take over to ensure uninterrupted system operation, enhancing stability and reliability. Designed for real-time control, it is ideal for industrial applications such as smart factories, energy management, and building automation.
Applications
Redundancy

I/O Applications

Ordering Information
| PRODUCT SERIES | DESCRIPTION | QNT. | INQUIRY |
|---|---|---|---|
Similar Products
| Software | |
|---|---|
| OS | Linux Kernel 4.14.78 (Xenomai real-time framework) |
| Protocol | • OPC UA Server • Modbus TCP/IP (Master/Slave) • Modbus RTU/ ASCII (Master/Slave) • EtherCAT Master • DCON Protocols • User-Defined Protocols |
| Development | Embedded Win-GRAF SoftLogic (IEC 61131-3) |
| Service | SSH Server, Web Server |
| Function | • Dual-PAC Redundant System • Application Protection • Data Binding • Real-time Online Updates • Save Variables • File Access and Data Log |
| Main Unit | |
|---|---|
| CPU | Cortex-A53 CPU, 1.6 GHz, quad-core |
| 64-bit Hardware Serial Number | Yes, for software copy protection |
| System Memory | 2 GB LDDR4 SDRAM |
| Storage | 8 GB eMMC, 4 GB microSD card (up to 32 GB) |
| Non-Volatile Memory | 64 KB FRAM, 128 KB MRAM |
| Real Time Clock | Provide seconds, minutes, hours, dates, day of week, month, year |
| Watchdog Timer | Yes |
| LED Indicators | |
|---|---|
| Status | 1 x System, 1 x Power, 2 x Programmable, 1 x Redundancy |
| HMI | |
|---|---|
| Buzzer | Yes |
| Rotary Switch | 1 x 10 Position (0 ~ 9) |
| Ethernet | |
|---|---|
| Ports | 3 x RJ-45, 10/100/1000 Base-TX (Auto-negotiating, Auto MDI/MDI-X, LED indicators) |
| COM Ports | |
|---|---|
| Ports | 1 x RS-232; non-isolated; for Console 1 x RS-232; 2500 VDC Isolated 1 x RS-485; 2500 VDC Isolated 1 x RS-422; 2500 VDC Isolated; for heartbeat |
| USB | |
|---|---|
| Ports | 2 x USB 2.0 (host) |
| Power | |
|---|---|
| Input Range | +12 ~ 48 VDC |
| Consumption | 7.2 W (0.3 A @ 24 VDC) |
| Mechanical | |
|---|---|
| Casing | Metal |
| Dimensions (mm) | 42 x 164 x 129 (W x L x H) |
| Installation | DIN-Rail Mounting |
| Environment | |
|---|---|
| Operating Temperature | -25 ~ +75°C |
| Storage Temperature | -40 ~ +80°C |
| Humidity | 10 ~ 90% RH, Non-condensing |









