RS232 Multi Computer Adapter

RS232 Multi Computer Adapter by Wiesemann & Theis

The RS232 Multi Computer Adapter by Wiesemann & Theis enables the connection of two serial data sources, such as PCs, to a peripheral device, like a printer, plotter, handheld scanner, or card reader, and offers flexible switching modes for efficient use. Equipped with three RS232 interfaces (one DTE port and two DCE ports, all with 9-pin Sub-D connectors), the adapter supports automatic switching based on a “first come, first served” principle, manual switching via buttons on the device, or a splitter mode for simultaneous data forwarding. The independently configurable interfaces allow conversion of baud rate, data format, and handshake protocol, enabling the adapter to also function as a baud rate converter. With an industrial-grade design, DIN rail mounting, high immunity according to EN 61000-6-2, and flexible power supply up to 24 V, the adapter is ideal for industrial control cabinets. The integrated data return channel supports bidirectional peripherals, and the diagnostic and commissioning tools (settings dump) simplify configuration. With a five-year warranty, the RS232 Multi Computer Adapter provides a reliable solution for applications in Industry 4.0, automation technology, and building management. This article highlights the technical features, applications, and advantages of the RS232 Multi Computer Adapter.

Flexible Switching Modes and Application Examples

The RS232 Multi Computer Adapter allows shared use of a serial peripheral device by two data sources, such as PCs, through three flexible switching modes: automatic switching, manual switching, and splitter mode. In automatic mode, switching occurs on a “first come, first served” basis, ideal when two PCs need alternating access to a device like a printer. For example, two workstations in an office can share an RS232 printer without manual intervention. In manual mode, the user controls switching via buttons directly on the device, useful in scenarios with specific access requirements, such as using a card reader in an access control system. In splitter mode, data from the master port is simultaneously forwarded to both slave ports, suited for applications where data must be distributed to multiple devices, such as logging machine data. The integrated data return channel supports bidirectional peripherals like handheld scanners or printers that send feedback to the data sources. This flexibility makes the adapter ideal for applications where multiple systems share a peripheral device, such as building management or automation technology.

Conversion of Serial Transmission Parameters

A key feature of the RS232 Multi Computer Adapter is its ability to act as a baud rate converter. The three RS232 interfaces (one DTE port and two DCE ports) are independently configurable, allowing adjustment of baud rate, data format, and handshake protocol. This enables connection of devices with different, non-configurable transmission parameters. For example, an older system running at 9600 baud can be connected via the adapter to a modern device at 115,200 baud without data loss. Conversion is transparent, with the handshake protocol controlling data flow to prevent overflows. This function is especially useful in automation technology where legacy systems must be combined with modern controllers, or in building management to integrate different peripherals like card readers or scanners. The ability to configure interface parameters independently makes the adapter a flexible solution for heterogeneous system environments.

Management and Connectivity

The RS232 Multi Computer Adapter offers a wide range of features that extend its usage in industrial and office environments. The three RS232 interfaces (one DTE port and two DCE ports, all with 9-pin Sub-D connectors) allow connection of two data sources with a peripheral device such as a printer, plotter, handheld scanner, or card reader. The data return channel supports bidirectional peripherals that send status feedback, such as scanners or printers with status reporting. The independently configurable interfaces allow adjustment of baud rate, data format, and handshake protocol, making the adapter a versatile solution for connecting heterogeneous systems. Integrated diagnostic and commissioning aids, like the settings dump, facilitate configuration and troubleshooting, especially in complex industrial environments. The DIN rail enclosure enables easy mounting in industrial control cabinets, while the flexible power supply up to 24 V allows integration into various industrial power sources. This combination of flexibility, diagnostic functions, and industrial design makes the adapter ideal for Industry 4.0 applications where reliable serial communication is critical.

Power Supply and Energy Efficiency

The RS232 Multi Computer Adapter is powered via an external supply up to 24 V connected through a pluggable screw terminal. This wide supply voltage range offers flexibility in industrial environments where different power sources may be present. The energy-efficient architecture minimizes power consumption, making it environmentally friendly and cost-effective. The robust power supply ensures reliable operation even in environments with fluctuating power sources, such as production facilities or building management systems. These features make the adapter particularly suitable for scenarios requiring stable power and energy efficiency, like automation technology or Industry 4.0.

Please note: The power supply is NOT included in the delivery.

Standards Compliance and Reliability

The RS232 Multi Computer Adapter meets stringent standards for immunity (EN 61000-6-2) and emissions (EN 55032:2015 + A1 Class B, EN 61000-3-2, EN 61000-3-3), qualifying it for residential, commercial, and industrial environments. Its high immunity ensures reliable operation even in environments with electromagnetic disturbances, such as manufacturing plants or control centers. CE marking and UL certification confirm suitability for international applications, while the robust construction is designed for continuous operation. With a five-year warranty, the adapter provides a low-maintenance and durable solution for professional users. The combination of flexible switching modes, baud rate conversion, and industrial design provides additional safety and stability, especially in demanding industrial scenarios.

Versatile Applications

The RS232 Multi Computer Adapter is ideal for applications where two data sources share a common serial peripheral device. In building management, the adapter enables shared use of a card reader by two access control systems with automatic switching to ensure smooth operation. For example, two PCs in an office can share an RS232 printer with the adapter automatically switching between data sources to prioritize print jobs. In automation technology, the adapter supports connection of two controllers to a peripheral device like a plotter, with baud rate conversion ensuring compatibility between different systems. In Industry 4.0, the splitter mode allows simultaneous forwarding of machine data to two analysis devices to support real-time monitoring and logging. DIN rail mounting makes the adapter suitable for industrial control cabinets, while support for bidirectional devices and transmission parameter conversion enhances flexibility. The adapter is versatile for use from manufacturing plants to office environments.

Advantages of Flexible Switching Modes and DIN Rail Mounting

The flexible switching modes of the RS232 Multi Computer Adapter (automatic, manual, splitter mode) enable simple and efficient use of a peripheral device by two data sources. The independently configurable interfaces allow adjustment of baud rate, data format, and handshake protocol, facilitating integration of heterogeneous systems. The integrated diagnostic and commissioning tools, such as the settings dump, simplify configuration and troubleshooting. The DIN rail enclosure allows easy and stable mounting in industrial control cabinets where space and order are important. Support for bidirectional communication and robust construction make the adapter particularly user-friendly and reliable. This combination of flexibility, rugged design, and high performance is especially beneficial in environments requiring fast and reliable solutions, such as industrial or automation technology scenarios.

Reliable and Flexible Solution for Serial Communication

The RS232 Multi Computer Adapter by Wiesemann & Theis impresses with ease of use, high reliability, and standards compliance. With three RS232 interfaces, flexible switching modes, baud rate conversion, DIN rail mounting, and bidirectional communication, it is the ideal solution for applications in building management, automation technology, and Industry 4.0. The five-year warranty underscores the durability and quality of this compact solution.