UM344-2

ON-LINE AND OFF-LINE OPERATION

5.1.3.2Local Pushbutton Input The low and high process temperatures selected as the 0%

Ranging (Controller OFF)

and 100% span points may be applied to the transmitter and

 

stored in the EEPROM using the ZERO/FULLSCALE

 

pushbuttons. This procedure assumes the transmitter is field

 

mounted to an operating process. If the transmitter does not

 

contain an optional Digital Meter to report the process

 

variable, other instrumentation on the Network must be

 

available to provide this information.

 

1. Open the sliding cover on top of the Transmitter's

 

housing to access the ZERO/FS pushbuttons. See Figure

 

1-1.

 

 

2. Change ZERO range value:

 

1) Supply new ZERO value.

 

If the process variable currently being reported by

 

the Transmitter is not the desired ZERO value, then

 

the process must be manipulated by an operator to

 

arrive at the desired value.

 

2) Activate the Pushbutton Mode

 

Press and hold for 5 seconds or more the ZERO

 

pushbutton, then release the pushbutton

 

3) Enter ZERO Value

 

Press and release the Zero pushbutton. The new

 

0% range value is stored in memory. If an optional

 

Digital Meter is installed, observe that the "PB"

 

annunciator in the display extinguishes (Normal

 

Mode).

 

When a new 0% value is set, the Transmitters 100%

 

value is automatically shifted to maintain the original

 

span except as follows:

 

∙

If the process is out of range, no new ZERO

 

 

value is stored.

 

∙

If the new ZERO value would shift the

 

 

FULLSCALE value past the sensor limit, the

 

 

new FULLSCALE value is automatically set

 

 

to the appropriate sensor limit (except in the

 

 

case where this would produce a span that is

August 1995

5-17

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Siemens UM344-2 user manual Ranging Controller OFF
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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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