Now showing 1 - 7 of 7
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    Item type:Publication,
    Using wired hart and wirelesshart together for PLC and SCADA system
    (2015-01-01) ; ; ;
    Subpayasomboon, Siramet
    Wireless Technology has promoted in the process automation because it does not require power and communication wiring for field instruments that enables reduced engineering cost. At the same time, end-users consider the developments of process automation by using wireless devices due to the growing of the new plants and replacing analog or wired HART plants. The paper presents a technique to modify wired HART device to be WirelessHART device and to configure it for communication with other WirelessHART devices. A PLC (Programmable Logic Controller) and SCADA system is used to provide centralized device information, historian, and HMI. Installation and configuration techniques of wired HART, THUM adapter or repeater, WirelessHART, HART gateway are described. In addition, engineering and SCADA software are assigned based on OPC to share WirelessHART data with gateway, PLC and SCADA system. The experimental results by using S7-300 Siemens PLC, WW InTouch, and HART devices in level process control are included to confirm the system workability. Moreover, the technique could be applied to collect data for end-user support to quickly and easily gain the benefits of device diagnostic and to decide the plant operation and planning.
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    Item type:Publication,
    Hmi implementation using radar chart for dual-loop system
    This article presents a method to implement the Human Machine Inter-face (HMI) for providing high visibility of dual-loop system to encourage good operations and maintenance practices. The proposed method is based on the employment of radar chart to display key performance metrics of simultaneous and independent control of two identical loops for extensive event monitoring. Two level control loops utilizing two Proportional-Integral-Derivative (PID) function blocks of a single Programmable Logic Controller (PLC) are used as the case study to show the workability of the proposed HMI implementation. Each loop consists of a transmitter for measuring the controlled level an inverter for inverting the PLC output to adjust a pump speed, and a power meter form easuring the pump power consumption. The transmitter outputs from both control loops are applied to the PLC analog input module, and then separately scaled to be available to each PID block. The PLC analog output module is used to pass the PID block outputs for manipulating inlet flow rates. The performance metrics including the set point, process variable, manipulated variable, and pump power consumption of both control loops are detected and collected by the HMI/Supervisory Control and Data Acquisition (SCADA)station. All detected data of four performance metrics are represented on the axes of radar chart in real time by using the Wonder ware In Touch software. The script functions to save and load the specified data to the SQL server database are also created on the HMI/SCADA station. Experimental results confirm that the proposed HMI implementation can function correctly.
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    Item type:Publication,
    PLC FUNCTION BLOCK CREATION FOR MINIMIZING DATA LINK LIMITATION ON CC-LINK-BASED CONVEYOR HANDLING SYSTEM
    (2022-07-01) ;
    Niyomtamarat, Patipak
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    ;
    In order to solve a facing network capacity problem when improving an existing conveyor handling system controlled by programmable logic controllers (PLCs) on master-slave control and communication link (CC-Link) network at a wooden pallet manufacturer, this article presents a software technique for short-term solution. For new requirements to upgrade a pallet sortation to be automated by installing new robotic handling unit, a slave PLC using an interface module modeled FX2N-32CCL (or slave PLC1) cannot receive all specified data of pallet production models from an existing master PLC using intelligent module modeled QJ61BT11N in one communication cycle due to limited data links. To overcome this limitation, a PLC function block creation based on data sorting approach is proposed. Two new function blocks named FB SEND and FB RECEIVE are created based on IEC61131-3 standard for adding to the existing ladder diagrams, which execute on the master PLC central processing unit (CPU) and slave PLC1 CPU, respectively. Experimental results verify that the created function blocks can provide data transfers correctly between the specified sources and destinations. The data received at the slave PLC1 CPU are similar to the data sent from the master PLC CPU. With the proposed solution, the desired conveyor handling system can be upgraded according to user’s requirements.
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    Item type:Publication,
    APPLYING MELSOFT GEMINI SOFTWARE FOR DIGITAL TWIN CREATION IN AUTOMATION SYSTEM PROJECT PHASES
    (2026-08-01) ;
    Sopha, Watcharapon
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    Asadi, Farzin
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    In the era of Industry 4.0, Digital Twin (DT) technology played a critical role in advancing manufacturing systems, particularly in real-time process simulation, performance optimization, and strategic decision-making. This study presents the application of MELSOFT Gemini software to develop DT for simulated industrial automation project phases. The system is designed to enable seamless data access and integration from physical devices into the DT in accordance with ISO 23247. The development process comprises two phases. The pre-deployment phase involves creating 3D models and simulating system behavior within a virtual environment prior to actual implementation. The Synchronized Operation phase enables visualization in MELSOFT Gemini through the transmission of data from physical devices via Operational Technology (OT) systems and Autonomous Mobile Robots (AMRs), using standard protocols such as OPC UA. The developed system accurately replicates the actual production process, provides early safety alerts, supports connectivity with various device types, and allows for future scalability all while maintaining compliance with the ISO 23247 framework. These findings demonstrate the potential of MELSOFT Gemini as a core platform for implementing practical, industry-ready DT systems.
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    Item type:Publication,
    Simple control valve diagnostic tool for Foundation Fieldbus technology
    (2012-01-01) ; ;
    Jareonwatthanayothin, Jetsada
    This paper presents a simple diagnostic tool for configuration and diagnosis the control valves that are Foundation Fieldbus devices. National Instrument, NI USB-8486 is the hardware which is designed to connect to Foundation Fieldbus segment and Labview software with NI FBUS Communications Manager API is used to develop the diagnostic tool for parameters checking, stroke testing, data logging for signature comparisons and offline analysis in the control valve. The tool not impacts with other Fieldbus devices and controller in the H1 segment. Therefore, the end user can use the tool online and offline in the segment and reduce engineering cost for expensive vendor's asset management software. In additional, the tool have developed to test step response of control valves that can be developed and applied to analyze effective factors or predict the maintenance in higher level. © 2012 SICE.
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    Item type:Publication,
    Real-time monitoring and reporting alarm system for pH measurement in wet scrubbers
    (2016-01-24)
    Promsawat, Thipichpon
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    In order to improve a maintenance of wet scrubber operation for achieving harmful and polluting gas removal efficiency at a latex glove manufacturer in Thailand, this paper presents a technique to implement the real-time monitoring and reporting alarm system for pH measurement in wet scrubbers. All pH meter outputs are applied to an existing programmable logic controller (PLC) slave located on the master-slave network for production line control. A PLC master is communicated to an operator workstation running the supervisory control and data acquisition (SCADA) software. In addition, measurement data from the SCADA software are automatically transferred to the statistical process control (SPC) software installed in a data historian server. Traditional routine manual data collection and non real-time email notification are replaced by the proposed system, which provides the continuous automatic data collection as well as the real-time display and alarm functions. The automatic and reliable email notification in real time can be also obtained. Experimental results verifying the performance of the proposed system are also included.
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    Item type:Publication,
    Condition monitoring based on failure modes and effects analysis using scada software for wirelesshart devices
    This paper presents the design and implementation of condition monitoring for WirelessHART devices by using the supervisory control and data acquisition (SCADA) software called WW InTouch. The design of the proposed system is based on a concept of failure modes and effects analysis (FMEA) for creating the human machine interface (HMI) on the operator workstation. The implementation of the proposed system is based on a technique of WirelessHART-Modbus TCP data transfers by mapping the HART tag names from the field wireless devices to the Modbus registers in the WirelessHART gateway. The script functions running on the HMI for detecting the published diagnostic data of the monitored devices and for identifying the FMEA results of device and power supply failures are created. A WirelessHART temperature transmitter and a wired HART control valve positioner connected with Wireless THUM adapter are employed as the interested field devices for monitoring their abnormal operating conditions to verify the workability of the proposed system. Experimental results from the failure mimic show that the proposed system based on FMEA can function correctly.
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