UM344-2

XTC COMMUNICATOR

2.1 DISPLAY

The MXC has a 5 by 8 dot matrix Liquid Crystal Display (LCD) with four lines of twenty characters each to show configuration parameters, operating status, on-line variables, and trends. The LCD has a back light that can be turned on for viewing in dimly lighted areas.

SELECT BLOCK TO EDIT - SENSOR INPUT -

SEL-

PREV NEXT END ECT

All MXC screens have a similar layout. As shown here, most configuration screens use the top two lines to describe the current screen, and the lower two lines to show the selections available from this screen. Selections are entered by pressing keys on the MXC keypad. Some on-line variable and trend screens are slightly different from that shown here, but they will always have a selection to access the next screen.

A blinking infinity symbol (∞) at the lower right corner of the screen indicates that the MXC is communicating with a field instrument or a personal computer. No keyboard keys should be pressed until the symbol is cleared upon completion of the communication.

2.2 KEYPAD DESCRIPTION

The thirty-key keypad is shown in Figure 2-1. It contains dedicated keys, alphanumeric keys with shift keys, and function keys. These keys are color coded as follows:

ŸRed - dedicated ON key

ŸBlack - dedicated OFF key

ŸGray - function keys and dedicated keys (for controller block, on-line monitoring, and MXC functions)

ŸWhite - dedicated alphanumeric, symbol, and shift keys

A dedicated key performs a given function no matter what screen is showing. A function key is dependent upon the action being performed and the MXC's firmware; available selections are shown on the screen's bottom two lines.

2.2.1 Dedicated Keys

ON - This key powers up the MXC and initiates the MXC self-test. Press and hold the key until the Moore logo appears and then release it. If the MXC fails self-test, a warning message will be displayed.

The MXC will now show the options available: communicate with a field instrument or personal computer or do off-line configuration. These topics are discussed further in Section 5.

To conserve battery power, the MXC will shut off after 10 minutes if no keypad key is pressed. This auto-shut-off is disabled when the MXC is on-line (e.g., displaying a process variable).

OFF - This key powers down the MXC. It may be used at any time. During configuration, however, care should be taken so important information is not discarded. When the MXC is in certain modes and communicating with a field instrument or personal computer, it will query the user as to whether or not it should be turned off in this mode.

September 1995

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Siemens UM344-2 user manual Display, Keypad Description, Dedicated Keys
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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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