Com-Server++

Serial Network Connection with the Com-Server++ from Wiesemann & Theis

The Com-Server++ from Wiesemann & Theis is a versatile and industrial-grade solution for integrating serial devices via TCP/IP Ethernet into networks. With numerous network services, from virtual COM ports and Modbus/TCP gateway to FTP client/server and box-to-box connections, the device offers flexible communication options for a wide range of applications. Thanks to plug & play commissioning via WuTility, support for Power-over-Ethernet (PoE), TLS encryption, and a robust design for DIN rail mounting, the Com-Server++ is ideal for Industry 4.0, automation technology, and network environments demanding the highest reliability and security. This article highlights the technical features, applications, and advantages of this powerful solution.

Transparent Serial Communication over the Network

The Com-Server++ allows seamless integration of serial devices with RS232, RS422, or RS485 interfaces into modern network environments. Windows COM redirection enables serial programs to be redirected to virtual COM ports without requiring changes in program code. This makes the Com-Server++ an ideal solution for virtual environments such as VMware or HyperV, where physical COM ports are missing, or as a replacement for local serial interfaces. Communication can optionally be secured with TLS-PSK encryption to protect sensitive data. Additionally, the Com-Server++ supports multipoint operation to distribute data to up to six network participants simultaneously, and offers packetization options to optimize serial protocols with sensitive timing requirements.

Box-to-Box for Transparent Data Transmission

The box-to-box function of the Com-Server++ enables logical connection of two Com-Servers over the network to create a bidirectional, transparent, and operating system-independent data tunnel. Serial data is transmitted quickly and reliably between devices, with automatic reconnect functions handling connection interruptions. This feature is ideal for applications where serial devices at remote locations need to be connected, such as in automation technology or distributed production systems. Communication can optionally be secured with TLS encryption to ensure the highest data security. Multipoint and packetization options are also available here to tailor data transmission to specific requirements.

TCP-/UDP Socket Communication for Flexible Integration

For developers, the Com-Server++ offers comprehensive options for integrating serial devices into custom network applications via TCP-/UDP socket communication. As a TCP client, the connection can be actively controlled, while the TCP server mode enables event-driven connections, optionally with TLS-PSK encryption. The UDP protocol provides efficient, connectionless communication for applications requiring low latency. This flexibility makes the Com-Server++ ideal for integration into tailored software solutions such as control systems or data loggers, while also supporting multipoint operation and packetization options for optimized data transfer.

Modbus/TCP Gateway for Industrial Applications

The Com-Server++ features an integrated Modbus/TCP gateway that quickly and reliably integrates serial devices with Modbus/RTU protocol (e.g., energy meters, transmitters, or frequency converters) into Modbus/TCP environments. This enables seamless connection of devices with RS232, RS422, or RS485 interfaces to modern industrial networks without requiring additional hardware. This function is particularly valuable in Industry 4.0 where networking of sensors and controllers plays a central role.

FTP Client/Server for Data Archiving

The Com-Server++ supports FTP client and server functions to transfer and archive serial data such as measurement values from scales, barcode readers, or status messages from UPS systems. This functionality uses the FTP standard capabilities of most operating systems and enables simple integration into existing workflows. For example, serial outputs can be automatically uploaded to a central server or stored locally on the Com-Server for later retrieval via FTP. This function is ideal for data archiving and monitoring in industrial and office environments.

Versatile Interfaces and Robust Hardware

The Com-Server++ is equipped with a switchable RS232/RS422/RS485 interface and an Ethernet interface (10/100BaseT) with autosensing and auto-MDIX. An alternative hardware version with 20mA/TTY interface is also available. The robust construction, including the option for DIN rail mounting, makes the device ideal for use in demanding industrial environments. Support for Power-over-Ethernet (PoE) and an external supply (12V-48V DC) via a screw terminal offers flexible installation options. The standards-compliant design ensures high immunity to interference according to EN 61000-6-2 and low emission according to EN 55032:2015 + A1 Class B, EN 61000-3-2, and EN 61000-3-3.

Easy Commissioning and Management

Commissioning the Com-Server++ is effortless using the WuTility software, which makes the device operational with only three clicks. Configuration is done via a web-based management interface (HTTP/HTTPS with certificate management), Telnet, or control sockets from custom applications. Support for DHCP facilitates network integration, while advanced protocols such as SLIP, Wake-on-LAN, and 802.1x EAP (MD5) offer additional flexibility. Remote configuration enables device management from any network location, simplifying maintenance and customization in large networks.

Versatile Applications

The Com-Server++ is designed for a wide variety of applications in Industry 4.0, automation technology, and IT environments. In industry, it integrates serial devices such as sensors, transmitters, or controllers into modern networks, for example via Modbus/TCP. In automation, the box-to-box function enables the connection of remote devices, e.g., in production facilities or building cabling. For data archiving, it stores serial data from scales or barcode readers via FTP. Other applications include the integration of legacy devices, networking of IoT devices, and monitoring of status messages in networks.

Please note: No power supply is included in the delivery.

Durability and Reliability

The Com-Server++ is designed for continuous operation and comes with a five-year warranty. The robust hardware and standards-compliant design make it ideal for industrial environments. Support for TLS encryption and multipoint operation ensures secure and flexible data transmission, while packetization options guarantee reliable communication with sensitive serial protocols. These features make the Com-Server++ a durable and reliable solution for serial network connection.

A Future-Proof Solution for Serial Network Connection

The Com-Server++ from Wiesemann & Theis is a versatile and reliable solution for integrating serial devices into networks. With features such as virtual COM ports, box-to-box connections, Modbus/TCP gateway, and FTP client/server, it offers a flexible platform for Industry 4.0, automation technology, and data archiving. Easy commissioning via WuTility, support for PoE and TLS encryption, as well as robust hardware make it ideal for demanding applications. Whether connecting sensors, legacy devices, or ensuring secure data transmission – the Com-Server++ is an indispensable tool for professional users.