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Author Topic: Suggest an HMI Controller  (Read 695 times)
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itp
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« on: December 08, 2015, 01:02:32 13:02 »

I am in search of an HMI controller module ( HMI controller means a Human Machine Interface with Builtin PLC)
for controlling a  power supply.
My requirements are as follows.

HMI size:     5.7"   Colour
Digital input : 8 Nos
Digital Output : 8 Nos
Analog input: 4Channels, 12bit  (Voltage input)
Analog Output: 2Channels 12bit (Voltage Output)
Comm ports: Ethernet, RS232
Built-in Web-server for remote HMI access.
Software for above controller configuration and user interface design.

Please suggest a product with minimum cost.


Thanks and regards
Itp

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zawmintun1
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« Reply #1 on: December 09, 2015, 06:30:25 06:30 »

Delta Scada HMI
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Gallymimu
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« Reply #2 on: December 09, 2015, 10:12:22 10:12 »

Mostly you will find these as two separate pieces:

Automation Direct makes some modest cost PLC/HMI combos
Siemens S7-1200 units can be surprisingly cost competitive as well if they  are hungry for market share in your area.

The processing power of the PLC and quality of design software will also play a role in how much this costs.
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itp
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« Reply #3 on: January 05, 2016, 05:54:13 17:54 »

Hi,
I need a 16-bit Analog output module with a stability of 20ppm/deg.C or better for this project. I could not found any yet. Can anybody suggest one.
Next option in front of me is to design a micro controller based card with a highly stable 16-bit DAC (Like LTC2602). But how to  interface this card with an HMI. Any Idea.
Regards
Itp
 
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scalz
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« Reply #4 on: January 15, 2016, 06:16:25 18:16 »

Hi.

I don't know if it can help. I am not expert. But Nextion HMI touchscreen are cheap I think (I have one 3.2 and 2.8", but there are wider more expensive of course). It uses uart comm. So only TX/RX, 5V. Good thing is TX/RX line are 3V.
There is a gui generator, not the best, but useful. I was able to prototype some small project faster than before not worriying about all the ui stuff. There is an arduino lib. So use it or port the code to your preference, it's just uart stuff..When you have understood how it works (which is not complicated) it is fun.
But I don't know what it looks in front of industrial HMI...
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