UM344-2

GLOSSARY

NETWORK RESISTANCE - Defined as the sum of the Current Sense Resistance, Barrier Resistance, if any, and any other resistance in the Network.

NPT - National Pipe Thread

OPTN = OPTION - MXC screen abbreviation

OTHR = OTHER - MXC screen abbreviation

OVRD = OVERRIDE - MXC screen abbreviation

POINT-TO-POINT NETWORK - A Network having a single field instrument and Primary Master. Analog signaling or analog plus digital signaling is possible.

PREV = PREVIOUS - MXC screen abbreviation.

PRIMARY MASTER - The single controlling Network Element that communicates with one or more field instruments.

RERANGING - Changing the transmitter's 4 and 20 mA settings (i.e., setting LRV and URV); this is a configuration function.

RTD - Resistance temperature detector - A temperature transducer based on the principle that the resistivity of a metal shows a marked temperature dependence.

SECONDARY MASTER - An occasional user of the Network such as the XTC Communicator (MXC).

SEL = SELECT - MXC screen abbreviation.

SNSR INPT = SENSOR INPUT - MXC screen abbreviation

SPAN - Algebraic difference between the upper and lower range values (URV and LRV).

TEMPERATURE TRANSMITTER (TWO-WIRE)- A device which is used to transmit temperature data from either a thermocouple or RTD via a two-wire current loop. The loop provides power to the transmitter which acts as a variable resistor with respect to its input signal.

THERMOWELL - A closed-end tube designed to protect temperature sensors from severe environments , high pressure, and flows. Usually made of corrosion-resistant metal or ceramic material.

TRANSDUCER - A device that accepts an input, such as pressure, and converts that input into an output of some other form, such as a voltage.

TRANSMITTER SHORT ADDRESS - A unique number assigned during configuration that identifies a transmitter connected to a network. An address between 1 and 15 is assigned to a transmitter connected to a Multi-Drop network. A transmitter connected to a point-to-point network has 0 as an address.

September 1995

9-3

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Siemens UM344-2 user manual Glossary
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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.
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