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Linear Interpolation Using Siemens S7-1200
(2025-01-01)
Maneerat, Noppadol
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Wongworrada, Tharathorn
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Cheypoca, Thepjit
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Sepsirisuk, Kasemsuk
This research is a continuation of the research on circular interpolation use siemens s7-1200 [1] It presents the movement of 3 axes, $x y z$, as a method of moving in a curve that is controlled by programmable logic control (PLC). In the future research, PLC will be used to control linear movement straightly. The work will be in the original format, but change the equation used to move in a straight line instead.
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Apply PLC to Control 3-Axis Machines
(2025-01-01)
Cheypoca, Thepjit
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Thaiyai, In
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Maneerat, Noppadol
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Narkthewan, Athasart
This report presents a method of using PLC (Programable Logic Control) to control the work instead of the 3-Axis machine position controller. PLC is popularly used in various types of control systems. It has a lot of control capabilities, is efficient, stable, durable, easy to use, and cheap. It is the use of commands to control the work of all 3 axes, 2 axes, and 1 axle. The commands used for moving in both straight lines and curves, and there are other devices that need to be controlled together with the machine that is being controlled.
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Open-Source IoT-Integrated SCADA System for Biomass Power Plant Monitoring
(2024-01-01)
Yuratsmeechan, Palakorn
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Manop, Chalermchat
This paper presents the development of a condition monitoring system for biomass power plant monitoring, employing the cloud open-source concept combined with notification and security features based on a SCADA system integrated with the IoT. Consequently, the open-source SCADA system is utilized to augment the control system's capabilities. This system will enable interactions among sensors, PLC, SCADA, HMI, and facilitate data storage in a cloud-based database. This integration ensures systematic and organized data collection, fostering efficient data analysis for operational processing within the biomass power plant system. Moreover, it permits rapid problem resolution through notifications via the remote Internet network system.
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Circular Interpolation using Siemens S7-1200
(2023-01-01)
Cheypoca, Thepjit
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Luanpol, Amata
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Wuti, Virot
This article proposes a way to control the movement of the step motor drive to control the movement of the 3 axes using a programmable logic controller (PLC) working instead of a numerical controller (NC). The workpiece can be milled the way it is needed, but the ability to control peripherals is limited, as it is a specific control system used to move the desired position. But the limitation of smaller PLC is that there is no order used to move directly as a curve, so a higher level of PLC is required, so smaller PLC are used to program curves with circular interpolation methods [1] to enable the use of curved motion.
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Implementation of control and SCADA system: Case study of Allen Bradley PLC by using WirelessHART to temperature control and device diagnostic
(2022-04-01)
Thepmanee, Teerawat
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Pongswatd, Sawai
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Asadi, Farzin
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Ukakimaparn, Prapart
System integration for process automation promoted the technologies that were accessed to functions and data of field device, controller, and SCADA system. In addition, the data from filed devices can apply to solve device diagnostic and preventive maintenance. This paper describes the practical technique to configure and implement of control and SCADA system that focus on integration of field device, PLC controller, and SCADA system. The paper presents case study of Allen-Bradley (AB) PLC by using WirelessHART device to temperature control and device diagnostic through SCADA system. PLC's input/output (I/O) modules are installed that consists of Modbus module, digital I/O module, analog I/O module. In addition, Prosoft configuration builder and Studio 5000 software are new software to build add on Modbus instruction and ladder diagrams, respectively. The experiments perform in case study of temperature control by using Proportional–Integral–Derivative (PID) function in the AB PLC. Wonderware InTouch SCADA software is implemented to monitor the process mimic, trend, and alarm. Moreover, the technique can support the operators and engineers to make decision for process control and devices diagnostic.
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Automatic Control Crude Oil Feeder System
(2022-01-01)
Tammaruckwattana, S.
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Vichachuai, E.
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Petchmaneelumka, W.
This paper presents a practical technique to design/improvement the existing Thailand crude storage tanks system from manual valves to automatic control for decrease the operator waste time by using programable logic controllers (PLCs) interface to the main controller (DCS) of the existing system via using Profibus protocol mapping data to control motor-operated valve (MOVs) which upgrade from existing system which uses manual valve operate by the operator. The controlled MOV utilized follows a recipe from a master controller for mixing crude oil from each tank and feeding it to the header after this supply to the refinery process. The proposed technique is based on the use of Profibus protocol to manage data to control MOVs by using PLCs modeled B&R X20CP3586 for interconnections of four nodes through Profibus master modeled B&R X20IF1061-1 for twelve slaves, eighteen slaves, fifteen slaves and two slaves for each node, and master controller over a control network to communicate between master control (DCS) with PLCs through DP/DP couple modeled Siemens SIMATIC DP 6ES7158-0AD01-0XA0 working as a Profibus gateway. Input status and output command of each MOV valve are sent/receive and controlled by the PLCs are specified with command and status byte for cyclic communications. The proposed PLC control system for control of the MOV valve can operate following the manufacturer's requirements with fast response and more reliability.
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Wincc-based process simulation for virtual commissioning of scada system integration
(2020-01-01)
Thepmanee, Teerawat
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Tantaweenulak, Adisak
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Smerpitak, Krit
In order to provide possibility for system integrators to verify the correctness and effectiveness of functions of a supervisory control and data acquisition (SCADA) system before on-site installation and actual commissioning, this paper presents a process simulation based on software-in-the-loop technique by using VBScript in WinCC for virtual commissioning. Design of integrating an existing control loop in water tank process of pharmaceutical manufacturing plant into a new SCADA is used as a case study. The interested process, which consists of inlet water pump, inlet control valve, level transmitter, and outlet water pump, is controlled by proportional-integral-derivative (PID) algorithm in a programmable logic controller (PLC) to maintain hydrostatic pressure in the water tank. Operations of the simulated process can be controlled in either manual mode or automatic mode. Moreover, the proposed simulation provides an option to imitate device failures that could not be done in real process due to damages for ensuring SCADA fault notification based on failure modes and effects analysis (FMEA). Experimental results of using the proposed process simulation for testing whether the created human machine interface (HMI) screens of the SCADA system integration fulfill functional design specifications are also included.
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Hmi implementation using radar chart for dual-loop system
(2019-08-01)
Pongswatd, Sawai
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Smerpitak, Krit
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Kummool, Sart
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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Multi-PLC control system based on wireless bridge/base stations for work-in-process movements in corrugated box manufacturer
(2018-12-10)
Smerpitak, Krit
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Jearnpanitpong, Woravut
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Julsereewong, Amphawan
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Thepmanee, Teerawat
This paper presents a practical technique to design and implement a cooperative control of two groups with three conveyors and two rail guided vehicles (RGVs) by using two master and two slave programmable logic controllers (PLCs), respectively. The controlled conveyors and RGVs are utilized for work-in-process (WIP) movements between a corrugator and six printing machines in a manufacturer of corrugated paper boxes. The proposed technique is based on the use of wireless bridge/base stations modeled Ubiquiti Rocket M5 and Loco M5 for interconnections of two master PLCs modeled Omron CJ2M-CPU31, two slave PLCs modeled Omron CP1L-M40DT-D and connected with Omron CP1W-EIP61 module, and a host application over a control network to communicate with each other through EtherNet/IP technology. Input and output devices of each controlled subsystem are hardwired to each PLC. The transmission and reception schemes to enable real-time input/output data exchanges between the PLCs are specified with tag names for cyclic communications on data links. The proposed multi-PLC control system for WIP movements can operate in accordance with the manufacturer’s requirements.
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PLC-based mobile mecanum robot as multipurpose vehicle
(2018-12-10)
Wongvanich, Napasool
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Gulpanich, Suphan
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Suesat, Taweepol
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Kongratana, Viriya
This paper presents the mobile robot that is able to mobilize in every direction through the use of four DC-motors-powered mecanum wheels. Each wheel can be programmed to rotate independently, allowing the vehicle to move in any direction without first turning, and thus can be used to navigate in narrow fields. The robot is controlled through the use of the Programmable Logic Controller CP1H-XA40DT-D, that takes the user intended direction from a joystick command and converts this command into movement vectors in conjunction to the mathematical kinematics model of the mecanum wheels. The motors themselves are controlled from the PWM signals. Two speed experiments were conducted. The first experiment tests the speed of the robot in a no-load environment, whilst the second tests the robot speed in a 50-kg loaded environment. Results show that the maximum attainable speed is around 31.9 ms <sup>−</sup> <sup>1</sup> with a drop of about 10% for the case of the added load from the no-load condition. This result validates the proposed applicability of the prototype as a wheelchair as well as a self-control shopping cart.

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