GLOSSARY

UM344-2

DAMPING - A user selectable output characteristic that increases the response time of a transmitter to smooth the output when the input signal contains rapid variations.

DIN - Deutsche Industrial Norms - A German agency that sets engineering and dimensional standards and has world-wide recognition.

DIN 43760 - The standard that defines the characteristics of a 100 ohm platinum RTD having an R versus T curve with an Alpha of 0.00385 ohms per ohm per degree C.

DIGITAL SIGNALING - The high frequency HART signal.

EXPLOSION-PROOF ENCLOSURE - An enclosure that can withstand an explosion of gases within it and prevent the explosion of gases surrounding it due to sparks, flashes, or the explosion of the container itself, and maintain an external temperature which will not ignite the surrounding gases.

FIELD INSTRUMENT - A network element that uses current variation for digital signaling or digital plus analog signaling.

HART - Highway Addressable Remote Transducer - A communication protocol that provides simultaneous analog and digital signaling between master and slave devices. It is supported by the HART Communication Foundation.

HART NETWORK - A single pair of cabled wires and the attached communicating HART elements.

LOWER RANGE LIMIT (LRL) - Determined by the transmitter's range, this is the lowest value of the measured variable that the transmitter can be configured to measure.

LOWER RANGE VALUE (LRV) - Representing the 4 mA point in the transmitter's output, this is the lowest value of the measured variable that the transmitter is currently configured to measure.

INTRINSICALLY SAFE INSTRUMENT - An instrument which will not produce any spark or thermal effects under normal or abnormal conditions that will ignite a specified gas mixture.

MAXIMUM OVERRANGE - The maximum pressure (static plus differential) that can safely be applied to a transmitter.

MULTI-DROP NETWORK - A HART Network having from one to fifteen field instruments that are parallel connected on a single 2-wire cable. This Network uses digital signaling only. Analog signaling is not employed.

NETWORK - A Network includes the following items:

ŸTransmitter(s)

ŸNetwork Element (controller, recorder, passive non-signaling element, or other device)

ŸCabling interconnecting these devices

ŸBarriers for intrinsic safety, if installed

ŸCurrent sense resistor

NETWORK ELEMENT - Any field instrument or Primary or Secondary Master.

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September 1995

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Siemens UM344-2 user manual Glossary

UM344-2 specifications

The Siemens UM344-2 is a cutting-edge industrial controller designed to meet the demands of modern automation and control systems. This powerful device is specifically developed for use in various applications, including manufacturing, process control, and machinery integration. The UM344-2 stands out for its versatility and robust performance in harsh industrial environments.

One of the main features of the Siemens UM344-2 is its high processing speed, which allows for real-time data processing and decision-making. The controller utilizes advanced microprocessor technology, ensuring quick response times and efficient operation. Its architecture supports multitasking, enabling it to manage multiple processes simultaneously without compromising performance.

The UM344-2 features a modular design, which provides flexibility in configuration and scalability. Users can easily add or remove modules to tailor the system to specific application requirements. This adaptability is beneficial for businesses that need to scale their operations or adjust to changing production demands. The controller is compatible with a variety of I/O modules, allowing for seamless integration with other equipment and systems.

In terms of connectivity, the Siemens UM344-2 supports various communication protocols, including Profibus, Profinet, and Ethernet. This versatility ensures smooth data exchange between the controller and other devices in the automation ecosystem, facilitating comprehensive monitoring and control. The inclusion of these communication standards enhances interoperability and allows for the integration of legacy systems with newer technology.

The Siemens UM344-2 is equipped with advanced diagnostic tools, which enable users to monitor system performance and detect potential issues in real-time. This feature reduces downtime and maintenance costs by allowing for proactive management of the system. The controller also supports remote access capabilities, enabling technicians to troubleshoot and configure systems from off-site locations.

Safety is a critical consideration in industrial environments, and the UM344-2 is designed with this in mind. It incorporates safety-certified features, ensuring compliance with international safety standards. Users can implement safety functions directly within the controller, streamlining system design and reducing the need for external safety components.

Overall, the Siemens UM344-2 exemplifies the fusion of technology and practical application, making it an essential component for businesses looking to enhance their automation processes. With its high performance, flexibility, and focus on safety, the UM344-2 is a reliable choice for industries aiming for efficiency and innovation in their operations.