Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [hmi]

10 questions
4
votes
3 answers

Which color puts the least "strain" on an LCD pixel to avoid burn-in/ghosting?

I am developing a user interface on a cheap Kinco color LCD HMI unit. After leaving a test UI on the screen for about 3 days, there was a very decided "ghosting" effect. I was able to eliminate the ghost outlines by alternating a solid black and…
Ryan Griggs
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0
votes
1 answer

Arduino NANO heating issue

I am trying use a HMI display with arduino NANO. I am powering arduino and hmi display ( topway 5 inch smart display ) with 9 volt adaptor. everyting works fine. but if I plugin the Tx, Rx pins which are coming from rs232 ttl converter (this device)…
mehmet
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0
votes
0 answers

24 Volt system with 2 outputs. Convert to 12 Volt Outputs

What would I need to add to set up to get 2 outputs at 12 volts. Outputs are 0 and 1. I would assume relays. Signal Outputs. For a 3 Position 12V Solinoid. Micro 820 2080-LC20-20QWB
John S
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0
votes
1 answer

Removing STM32F4xxx based HMI from CANBUS puts the network in BUSHEAVY state

I have a CANBUS with 3 devices on it. A PLC (CAN IO 14+, HAWE), a HMI (Barth DMA-20) and a 6 button CAN enabled button panel (Greyhill). The issue is, when I remove the display from the network (without disconnecting power) to simulate a case of…
Aman Kejriwal
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0
votes
2 answers

TIA portal - failed to establish a connection

I'm using TIA portal siemens v15.1 for my project when i tried to upload the code to the plc this error pops up. Appreciate anyone can help me in this issue
Aisha
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0
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0 answers

HMI lost connectivity to TCP ip network

I need help with an ASEM HMI130TF with a SCADA program on it works on Windows 7. it is connected with LAN network TCP/ip with a PLC and another HMI, and it has a static ip. the problem is it sometimes loses connectivity to this LAN, thus it can't…
mr.Arrow
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0
votes
2 answers

Digital control of contactors

We are trying to control a bunch of 3 phase contactors using an HMI. The contactors' coils are activated by two lines of the 240V 3 phase source (L1 and L2). We are trying to figure out if the relays needed for activating the coils should be rated…
Ivan Leon
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-1
votes
1 answer

Serial2.write not working on ESP32

well I using topway brand HMI display it is very easy to use with Arduino nano or UNO with rs232 converter. this my converter: . for example this code is writing "63" number on display. it is working with arduino nano but not with ESP32 do you have…
mehmet
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-2
votes
2 answers

Hmi normally open or normally closed

Currently i am working on a new project for which im using Unitronics vision oplc ide .This is my first time using unitronics plc . I have a doubt , while i'm using invertbit,would the object be a NC toggle switch or a NO toggle switch and why?
Muskan
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-3
votes
1 answer

HMI design industerial

I'm planning to design HMI for a product that i want to design. but, I've questions that I couldn't find answers to: 1- TFT or OLED screens, are they reliable? do they last for > 10 years? (ok, yes within their rated temperature) (i guess they have…
Hasan alattar
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