Questions related to PLC
I pray you are well.
Am humbly looking out for expert panelists that can review my research instruments in relation to a study on customer experience in relation to usage of chatbots. My defense in due soon, so appreciate an urgent response. Please reach-out so that I may share the instruments. They are composed of a questionnaire, interview guide and focus group discussion guide. Details; HOW DOES THE USE OF A CHATBOT IN SAFARICOM PLC INFLUENCE CUSTOMER EXPERIENCE? Doctoral Study Project (DSP) Presented to the Glenn R. Jones College of Business of Trident University International in Partial Fulfillment of the Requirements for the Degree of Doctor of Business Administration
How to collect data from assets, production lines, remote devices under the industry 4.0 context? May be it's about automation, SCADA, PLC, OPC UA, and even IoT, Edge, 5G. Where could I find something useful to have a overall view?
We are working on a project that requires the use of voice command to stop a screw conveyor in an emergency situation.
Hi anyone please tell me the PLC model name and number which is suitable to configure 4pwm output Pulse and one HSE counter. Because PLC S7 1200 plc 1214 ac/dc/rly not give pwm output.
For my research purpose, I want to show how much energy and memory of a device (Like - PLC/ RTU ) is consumed by a Neural Network. Is there any simulation tools available for this task?
Thanks in advance.
I want to implement Fuzzy Control in an actual production process based on S7-1200 PLC , I have simulated the fuzzy control system in Matlab .But ,When i want to programe the PLC code using Siemens TIA Portral software, I found the fuzzy inference and defuzzication is difficult to programme. I have read many articles and papers disscusing fuzzy control based on PLC, they all omited the key step ,that is how to programme the fuzzy inference and defuzzication, so i still confused about that. I am very long for someone to be able to give me some help or share me some fragments of the PLC code related to this question.
My E-mail: email@example.com
Thanks for all reading my question!
Hello, i am working on a project with LS PLCs that using IEC language. i need to calculate integral for any curves. like SIN,COS, X2 or ...
do you have an idea what should i do?
Besides the Schneider Electric PLCs that are programmed with EcoStruxure Control Expert or Unity Pro, Do you know of any other PLC(s) that include fuzzy control functions?
It would be interesting to know which manufacturers have been following the IEC 61131-7 standard, to know the state of the art of the application of fuzzy systems in industrial processes.
Hello, I recently start learning to program plc's and now i find myself trying to link the CX-Simulator with a software called Factory I/O wich is a simulator of a line of production, the problem is the factory I/O software it's design to connect fisicly with a PLC, no need of anything else, but i don't have a physic PLC in home there's anyone with experience in this kind of issue?
I want to know if it's a way to connect the two softwares in modbus.
like simulating an ethernet connection maybe?
Thanks for the Help.
I am trying to simulate a PLC within smart grid network in OPNET software. I have tried to find some resources to learn how that could be done in the OPNET modeler. There is a lack of resources for this tool. I am wondering if you know any resources to do implement this simulation?
I know in the field of fluid mechanics, we mostly deal with PDEs such as Navier-Stokes equation.
But what I want to do is to design a controller for flow control of a system consisting of a centrifugal pump and a pneumatic valve. So in this case I need the dynamical model of the system and by dynamical I mean the ODE equation of the system.
I am Md Al Amin from Bangladesh.
I am not expert but I am trying to be a one of the best engineer and researcher. Now I am working on “PLC” Project. I have a dream,“I want to make the world more closer by technology.” People thinks it’s magic but we called it engineering.
Please feel free to give me suggestions.
Keep me in your prayers.
It is unfortunate that an Organization of repute as Science Alert should short change in this 21st century somebody from third world.
Is it because am from third world nation or is it because am a Nigerian or Africa. Have not slavery stopped?
A warning to all third world nations who will fall victim in future, Science Alert short change scholars from third world.
Cyril Ogbuanu, PhD
This is payment I made to Science Alert in 2012 through First Bank of Nigerian PLC for an article that I was told after payment that it was rejected. Am I not supposed to be refunded the $625.
I am doing my Masters thesis in Addis Ababa university Ethiopia in the title of " The Effect of Psychosocial Work Environment on workers' Motivation: In the case of MIE PLC. As the result of I need a standardized scales that helps to measure the perceived organizational support and peer support in the work place setting. If you know please inform me via email address. firstname.lastname@example.org
I want to switch the diesel generator from the relay output interfaced between PLC and diesel generator starter for automatic switching. How this can be achieved. Is there any circuit design. Is 8 leg relay of 30A is suitable for this? If your answer is yes. Kindly explain the circuit design and interfacing mechanism to switch the generator for its automatic action.
My field research was to study the interactions of teacher leaders in a teacher leader PLC in a primary school. I am curious as to any findings you'd be willing to share and any current scholarly literature that could influence my analysis.
For an integrated PLC-VLC system, the overall frequency response is obtained by multiplying frequency response of PLC and VLC system. Most of the research paper consider SISO VLC system. what if MIMO VLC is considered? To get overall frequency response, can multiplication of both system be done?
ROckwell PLC LOGIX module is going to Program mode even when the key selector is in Remote mode. Can any anyone find a reason?
I have synthesized few heterocyclic compounds which show good cytotoxicity against MCF7 cell line in the in-vitro assay (i.e., MTT assay). Now for in-silico molecular docking study, I am not sure which receptor should I choose? In some literature, the receptor protein selection is made by using the binding affinity database (e.g., Thomson Reuters MetaDrug). My question here is that to link the in-vitro study to in-silico study how to choose the receptor protein for molecular docking study?
Wanted to know, how can I calculate current consumption of a sensor or a motor or a drive?And based on this how do we select I/O card for the PLC?
hi all dear!
What is the difference between SCADA or PLC or NCS or DCS or IoT systems?
What do you think is the best answer to this question?
I was able to construct a plc ladder with simple components for automatic open-close door but I want PLC ladder with many components like emergency stop, IR sensor, pressure sensor, 24 volt dc servomotor, timer, up/down counter with data blocks, open limit switch, close limit switch, open door indicator, close door indicator.
Please help me to build a ladder construction.
I am working on a sensorless control scheme of PMSM based on Adaptive Luenberger (state) Obsever. It is relatively easy to set the observer gain to reach stable and successful observer tracking in simulation. When it comes to real-time implementation (I use a DSP hardware with program cycle time of 150 micro sec. which is more than sufficient for a high quality sensor-based control which is also easily achievable in my case).
I could only obtain an intermittent or unstable tracking in real time when I use the same gain I used for simulation (although off-line simulation is made very close to reflect real time dynamics by making current and speed controllers discrete ones at the same sampling time used in real time where speed control loop is executing once each 30 executions of current control loop)
I know that there are still many differences between off-line simulation and real time system (specially those attributed to noise and parameter uncertainty) that can result in different response but I wonder if somebody can help advising a systematic tuning approach like for example those procedures we usually use for tuning PID controllers.
Andreas (and colleagues) - this sounds very interesting. I'd love to learn more if you have a papers out already. We work almost exclusively in very high poverty schools that are not serving students well. We administer a school transformation rubric annually to track majors systems (distributed leadership, professional learning, and core instruction) as well as a process monitor that tracks the occurrence of PLC, grade level, and other collaboration structures and the production of products from those sessions (unit and lesson plans, professional learning plans, etc.). We still find process measures pretty rare in the wild (at least in the schools we serve). I'm wondering if we would be likely to encounter such things in higher performing schools (I'm thinking of the impact of improved preparation programs, whole school/district reform models, etc.).
For a PLC application, I try to inject a low frequency signal (some KHz), in the sector (220VAC, 50Hz), without using transformers especially for the recupreration of the signal.
i would like to ask how to add the cyclostationary noise with three regions to the ofdm signal for narrowband PLC (IEEE 1901.2 Standard).
Isearch how to make this in matlab because when i do y=h*s+n where n is the output of cyclostationary noise i get error .
I need help please.
For controlling the field equipment, I need to circulate 24vDC from my RTU to the field equipment, and 110VAC from the other direction - For input and output.
In this case, can I use a single 2pair cable with one pair carrying AC signal and 1pair carrying DC signal. Note that the current is going to be in a very few mA (typically contributing to the resistance in the circuit) and the cable distances are not going to be more than 100meters
In our fertilizer Factory, Integrated Turbine and compressor (ITCC) controlled by Tricon 1131 software which is very high priced. Is it possible to reduce the cost using highly featured PLC ? Here BN3500 also used to monitor Vibration.
During recovery, if the leaf water potential of a tree species recovered to control value, does that mean the degree of xylem embolism (PLC) is also reduced to control level? In other words, if leaf water potential recovered, but there remains substantial xylem embolism, is this reasonable?
I am working on a project where i might want to need to communicate between SEL devices and PLC.I am working with SEL 2020 and 351S devices.So by which protocol I can able to make communication between PLC and SEL devices?
I am focusing on system level resource allocation and then trying to optimize it by using any optimization technique.If any one have some useful data and matlab code kindly share it with me.
I want some info about current problems in industry working with PLC and SCADA. What problems do you face during working with them?
I want to start research in this field of industrial automation. Hence, right now I am in phase of information gathering.
Any suggestions are warmly welcomed.
I am working on I&C system for ITER cryostat. I have to monitor temperature, displacement, acceleration,strain as well as heater controls for pedestal ring through PLC. I want to do some prototyping activity that can help in realizing the actual I&C system. I want basically to test our sensors.
I am curious if in practice non-repudiation is an important property in SCADA networks.
For example is it a need in case of a system failure to be able to find which employee did a wrong action (thus a message that goes from the SCADA to the PLC)?
I am also interested in the other direction where an employee canot deny he obtained an information from a PLC (thus a message that goes from the PLC to the SCADA).
Is such mechanisms really used in practice and if yes by which mean (it seems to me that industrial protocols such as MODBUS or DNP3 do not allow non-repudiation)?
Thanks in advance,
I am looking for a method in Simulink to select between two matrices of different sizes (in this case a 2x3 and 3x3 matrix) which can pass the Programmable Logic Controller (PLC) requirement of fixed size output.
In the example attached, I tried using multiport switch, but it will only work when I enable variable size, which makes the approach incompatible with PLC. I cannot add zeros to make the matrices of the same size, because this will affect a part of my Simulink block downstream. Is there any possible solution/workaround for this method?
PS: I cannot use m-code for this purpose as it is not compatible with the PLC hardware target I plan to use.
I am will to test PLC activity in HUVEC using "Thermo #E10215" which is a kits measuring fluorescence generated from PLC-cleaved substrates. However, there is no instructions of lysis buffer.
Can ones have experiences on PLC and fluorescence kits suggest a lysis buffer which can preserve PLC activity and will no interfere fluorescence.
I googled one recipe:
20 mM Tris,
100 mM NaCl,
50 mM β-glycerophosphate,
0.5 mM dithiothreitol,
1 mM Na3VO4,
1% Triton X-100,
10 mg of leupeptin per ml,
10 mg of aprotinin per ml,
5 mg of pepstatin per ml.
Any comments on this one? Thank you!
i am looking for a software tools set that let me setup a multi-point to multi-point VPN which is called VPLS over IP (not MPLS) . does any one have any suggestion how can I get in to this?
MRI which uses NMR enjoy the resonance feature of hydrogen nucleus for imaging. this technique is completely different from reflection feature of objects used in radar scanning. i would like to know why this technique is not used for radar scanning to detect other material that used in aircraft or devices that have special materials .
I am doing controller for CPV solar sun tracking system using SPA on PLC and I have almost succeeded to track the sun, it tracks on azimuth but there is an error with zenith. I don't know its cause. Is it the elevation parameter or the gear ratio?. does the elevation from see level affect strongly? I programmed it to start from steep position at sunrise and i don't know exactly this degree of start. I also don't know the degree of the whole stroke. what do you think?
I don't know the parking angle of the tracker. I don't know the elevation angle as the tracker doesn't reach its end ( it may be moving from 5 to 88 degree) I don't know it exactly as the mechanical structure isn't mine
Am working on the Ballast Water Treatment System using UV-C Radiations with Medium Pressure Mercury Lamp.
- Do i need to use any driver for controlling the lamp Intensity?
- Is there any Electronic Ballast that can act as a driver and can be connected to the PLC directly?
Can anybody tell me how to setup VersaMax PLC High Speed Counter and what Ladder Logic Block is to be used? Basically I am trying to count a quadrature encoder A & B pulse, In forward rotation value will increase and In reverse rotation value will decrease. Please help me.
I have a project related to PLC but I've never used PLC beforehand. Currently, I want to study PLC programming languages (prefer Structure Text). Could you please recommend me the PLC simulator?
Thank you so much for your support.
PLC model: MELSEC-Q Series - Q03UDECPU
looking for some serious works about Power Line Communications (PLC), if any one have papers or tesis that can share with; I'll appreciate it.
I have applied this approach on SCADA system model composed of two nodes (SCADA Master and PLC). The approach gave as a result of utilizations (%) of nodes and tasks response times due to the introduction of each solution. What can I do to prove that the approach is working in the real world ?
I know that Schneider PLCs work with Mod-bus protocol for networking, however, I wonder if there is any other PLC and industrial automation brands that work with mod-bus?
If two brands work on the same network protocol like mod-bus are they compatible? I mean can I design an industrial automation with devices from more than 1 brand? Like choosing actuator from one brands and PLC from other brands.
I want to establish communication between KEPServerEX and Siemens S7-313-c2-DP PLC using Siemens serial MPI cable (order no. : 6ES7 901-0BF00-0AA0). To do so, I was trying to download the PLC program through serial MPI cable. I have also tried different configurations of PG/PC interface for the serial MPI cable. However, I encountered errors in each case. So, what is the procedure to establish communication between serial MPI cable and Siemens S7-313-C2-DP PLC? Thank you.
I would like to deploy the Simulink PLC Coder generated Structured Text code in Siemens PLC. Right now, I have tried the 'plcdemo_simple_subsystem' example and deployed the generated Structured text code in Siemens S7-318-2-DP PLC. Now, I want to know that how can we assign real/process I/Os to the I/Os in the code? Besides, the code also consists of transfer function, so how is it possible to use the code with real time system? Your help will be very much appreciated. Thank you.
I am having Siemens 313-c2-DP PLC and I want to establish communication between PLC and suitable OPC server. The problem is that this PLC supports profibus and MPI communication protocols only. Since, I don't have the appropriate resources for profibus, I would like to establish communication through MPI USB cable. So, can you provide the name of the OPC servers which can communicate with the S7-300 series PLC over MPI USB protocol (except IBH server)? Thank you.
In some PLC based solar trackers, real-time processing speed is too limited to use astronomical algorithms in high accuracy sun tracking. In precise solar tracking, a lookup table can be pre-calculated and the solar vector values (sun azimuth rotation and sun elevation altitude) stored in the lookup table or spreadsheet. With a pre-established lookup table, a PLC can obtain the position of the sun at any time and then the direction of tracking mechanism is adjusted to point to the direction of the sun, much like tracking preset waypoints in (solar) navigation in a time-synchronous manner. Was hoping researchers can share practical challenges or complications with Eprom type lookup tables in PLC or microcontroller environments.
I have hovered over MATLAB help, and I don't want to use the code generator for PLC. I was wondering if there are any means to use pre-programmed black boxes with adjustable settings. I'd appreciate any comments
Most literature gives sales as the variable to pinpoint the location of a product in the PLC. However i'm looking for other variables to determine at what phase/stage a product is.
Who can provide me the right answers/literature?
Hie guys .Help please .I am trying to design a closed loop feed braking system to control the brakes using a PLC for a locomotive (10 gauge). I was planning on using a Hall Effect sensor to pick up rotational speed and also measure it, I have just been told it will not be as accurate. Some suggested I try a tachogenerator and another suggested to me to convert a PWM output into a voltage output but I don’t know where to start. Thanks you?
What are the main challenges, advantages and drawbacks of this technology (PLC)?
I am using Allan Bradley PLC with a servo module (1756-M02AE) for obtaining velocity and position. In this, I am using a position loop for controlling the velocity of the structure. I need a in detailed explanation regarding this position loop. In this regard, I am attaching the document of the servo module. Please refer to page number 132 in the document for the line diagram of the position loop.
Professional learning communities seem to be 'everywhere' in dutch schools nowadays. However nobody really seems to know what makes a 'good' professional learning community. What is necessary for a professional learning community to really 'learn' and to do it together? I am curious to know about experiences you may have studying learning in PLC's
In xylem, hydraulic conductivity measurements, what is the desired concentration of bleach that should be used in order to constrain bacterial growth on the samples before the vacuum process?