EDGAR: PoE Ethernet serial device server

PoE Ethernet serial server supporting RS232 or RS485. Edgar is powered from an Ethernet cable using PoE 802.11af standard of from an external power supply (11 - 58V). Power output VOUT for powering an external device. TCP, UDP and HTTP GET protocols. Easy configuration via responsive web interface.

What makes Edgar unique?

1. Dual power - it can be powered from PoE 802.3af or an external power supply (11 – 58 V DC).
2. Power output - Edgar can power an external device using its VOUT terminal. It means PoE can be used both for the converter and other device as well. The Voltage Output can be 5, 9, 12 or 24 V. It is possible to switch it on or off via a web browser.
3. HTTP GET communication allowing an easy access to the serial port from a WEB server.

Connection diagram

For the communication, TCP server, TCP client or UDP can be used. In addition to standard types of communication, Edgar can send packets from / to the serial line via HTTP GET. From a web server, the data packet can be sent as an HTTP GET request. Similarly, if the data on a serial line - for example, from a connected barcode reader - comes in, the converter can send the data to the web server as an HTTP GET request.

Edgar comes in a rugged metallic enclosure and can be DIN rail mounted (optional).

PoE serial server applications

• Connecting devices communicating via serial line to Ethernet or Wi-Fi.
• Communicating with remote devices using Internet.
• Easily connect your legacy devices to computer network.
• Cable management improvements – connects to Ethernet and power supply using a single cable.

Edgar features

• Converts serial line to Ethernet
• Powered from PoE or from an external power supply (11 – 58 V)
• PoE standard in compliance with IEEE 802.3af
• Can be powered also from "passive PoE" (44 – 57 V)
• Power output for powering an external device can be 5, 9, 12 or 24 V
• Power input is galvanically isolated from other parts of the deivce
• Easy configuration using web interface
  
• TCP, UDP and HTTP GET protocols
• User selectable interface RS232 or RS485 (DIP switch)
• Virtual serial port - an option to use Edgars serial port the same way as computers serial port
• Used signals RS232: RxD, TxD, RTS, CTS, GND
• Used signals RS485: RxTx+, RxTx-
• Indications for power, data transfers, connections and network activity

Power Output VOUT

Power output VOUT is mostly used in situations where the converter is powered from PoE. VOUT power output can power the connected device as well. Therefore no additional power supply is needed for the device connected to it.

Power output is DC and the voltage is determined by the switches on the side of the converter. Power output can be switched on or off using the web interface. The output voltages can be selected using a DIP switch on the side of the device. You can chose from the following options:

• 5 V / max. 630 mA
• 9 V / max. 350 mA
• 12 V / max. 260 mA
• 24 V / max. 130 mA

How does HTTP GET work in an Ethernet converter to a serial port?

This feature allows data from the serial port to be sent as HTTP GET requests to a remote server. In the reverse direction, the data from the remote server can be sent to the serial line directly by replying to the GET request sent by the converter.

Edgar sent GET to the server and received a reply with data that should be send back to serial port

The connection can also be initiated from remote server side. The server sends HTTP GET to the set.xml script in the converter. Data can be sent as an ASCII character string or using hexadecimal form as binary data.

Edgar received GET reply from the server with data, that should be send to serial line

GET communication can be optionally secured with 128bit AES encryption.