IIoTSys PE11-AC RS485 Serial Device Server (AC Power)
$24.00
RS485 serial device server with AC power, Modbus TCP/RTU bridging, and multi-protocol Ethernet uplink.
- Model
- PE11-AC
- SKU
- IIS-SG-PE11-AC
- Product type
- RS485-to-Ethernet serial device server / protocol gateway
- CPU
- Cortex-M3 @ 96 MHz
Overview
The IIoTSys PE11-AC is an industrial RS485-to-Ethernet serial device server designed for connecting legacy serial equipment to IP networks. It uses a Cortex-M3 microcontroller running at 96 MHz with 2 MB Flash and 128 KB SRAM under FreeRTOS, delivering stable protocol conversion and remote access.
On the serial side, the PE11-AC provides an RS485 interface (A+/B-) that can address up to 32 devices on a single bus with cable runs up to 1200 m. Baud rates up to 460800 are supported, with configurable data bits (5–8), stop bits (1/2), and parity (None/Even/Odd). On the network side, a 100M Ethernet port carries TCP, UDP, MQTT, HTTP, WebSocket, and virtual serial port sessions. Built-in Modbus TCP ↔ Modbus RTU conversion and timed acquisition simplify SCADA and PLC integration.
Configuration options include a Web UI, CLI, XML import, companion configuration software, and UART quick setup. Security features include AES-128 and DES3 encryption, registration and heartbeat packets, and OTA firmware updates. Status LEDs (Net, Active, Power, Link) aid field diagnostics; Reload (≥4 s) restores factory defaults and Reset reboots the unit.
The enclosure measures 97.60 × 64.95 × 27.50 mm and mounts on C45 / 35 mm DIN rail. Operating temperature is −40 to +70 °C; storage is −40 to +85 °C at 5–95% RH non-condensing. Typical working current is about 100 mA with power consumption under 400 mW. This AC-powered variant accepts 100–240 VAC, 50–60 Hz.
Core Technical Advantages
- RS485 (A+/B-) to 100M Ethernet serial device server and protocol gateway
- Cortex-M3 @ 96 MHz, 2 MB Flash / 128 KB SRAM, FreeRTOS
- Uplink: TCP, UDP, MQTT, HTTP, WebSocket, and virtual serial port
- Modbus TCP ↔ Modbus RTU conversion with timed acquisition
- Baud rate up to 460800; data bits 5–8; stop bits 1/2; parity None/Even/Odd
- RS485 bus: up to 32 devices, cable length up to 1200 m
- Configuration via Web, CLI, XML import, config software, and UART quick config
- AES-128 / DES3 encryption; registration and heartbeat packets; OTA updates
- Operating temperature −40 to +70 °C; DIN rail (C45 / 35 mm) mounting
- AC power input: 100–240 VAC, 50–60 Hz; typical power < 400 mW
Typical Use Cases
- Connect RS485 PLCs, meters, and sensors to an Ethernet SCADA or MES network
- Bridge Modbus RTU field devices to Modbus TCP for plant-floor IP integration
- Remote monitoring of serial instruments over MQTT or HTTP
- Virtual serial port access to RS485 equipment from engineering workstations
- DIN-rail serial gateway in control cabinets with AC mains available
Compatible Protocols
- Ethernetnative
100M Ethernet uplink for TCP/UDP/HTTP/WebSocket sessions
- RS-485native
A+/B- bus, up to 32 devices, up to 1200 m
- Modbus RTU/TCPconvert
Bidirectional Modbus TCP ↔ Modbus RTU with timed acquisition
- MQTTnative
MQTT client uplink for telemetry and remote messaging
- TCPnative
Transparent TCP client/server serial tunneling
- UDPnative
UDP serial data transport
- HTTPnative
HTTP for configuration and data exchange
- WebSocketnative
WebSocket serial/data sessions
Technical Specifications
| Model | PE11-AC |
|---|---|
| SKU | IIS-SG-PE11-AC |
| Product type | RS485-to-Ethernet serial device server / protocol gateway |
| CPU | Cortex-M3 @ 96 MHz |
| Memory | 2 MB Flash / 128 KB SRAM |
| OS | FreeRTOS |
| Serial interface | RS485 (A+/B-) |
| RS485 devices | Up to 32 on one bus |
| RS485 cable length | Up to 1200 m |
| Ethernet | 100M Ethernet |
| Baud rate | Up to 460800 |
| Data bits | 5–8 |
| Stop bits | 1 / 2 |
| Parity | None / Even / Odd |
| Network protocols | TCP, UDP, MQTT, HTTP, WebSocket, virtual serial port |
| Industrial protocol | Modbus TCP ↔ Modbus RTU; timed acquisition |
| Configuration | Web, CLI, XML import, config software, UART quick config |
| Security | AES-128 / DES3; registration & heartbeat packets |
| Firmware update | OTA |
| Indicators | Net, Active, Power, Link |
| Buttons | Reload (≥4 s factory reset), Reset |
| Power input | 100–240 VAC, 50–60 Hz |
| Working current | Approx. 100 mA |
| Power consumption | < 400 mW |
| Operating temperature | −40 to +70 °C |
| Storage temperature | −40 to +85 °C |
| Humidity | 5–95% RH, non-condensing |
| Dimensions | 97.60 × 64.95 × 27.50 mm |
| Mounting | C45 / 35 mm DIN rail |
Frequently Asked Questions
What serial interface does the PE11-AC provide?
RS485 with A+/B- terminals. One bus can connect up to 32 devices with cable lengths up to 1200 m.
Does it convert Modbus RTU to Modbus TCP?
Yes. It supports bidirectional Modbus TCP ↔ Modbus RTU conversion and timed acquisition for SCADA or PLC integration.
What power supply does this model need?
The PE11-AC accepts 100–240 VAC, 50–60 Hz. Typical working current is about 100 mA and power consumption is under 400 mW.
How do I reset to factory defaults?
Hold the Reload button for at least 4 seconds to restore factory settings. Use Reset for a normal reboot.
What mounting options are supported?
The unit measures 97.60 × 64.95 × 27.50 mm and mounts on C45 / 35 mm DIN rail.
Which network protocols are available?
TCP, UDP, MQTT, HTTP, WebSocket, and virtual serial port are supported over the 100M Ethernet interface.