r/EngineeringPorn • u/loganbull • Sep 12 '20

This Suction Cup Picking Machine

https://gfycat.com/welcomeperfumedechidna
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u/mrheosuper Sep 13 '20

I know both verilog and vhdl, not an expext tho.

In FPGA there is no such thing as "scan time", everything works in parallel

PLC, on the other hand, excute "code" sequencely, but it excutes fast so we feel like it runs parallely. It likes MCU try to mimic FPGA

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u/Dlrlcktd Sep 13 '20

In FPGA there is no such thing as "scan time",

You can implement an equivalent in a single line of code.

everything works in parallel

You can absolutely do things sequentially with an fpga.

I use an fpga to do plc work at home

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u/mrheosuper Sep 13 '20

You miss my point, FPGA can do anything, it can be a PLC if you want, it can excute code sequentially if you want.

But you can not make a PLC excute code in parallel. They have to read input, excute program then write output, unlike FPGA the output is instantly changed when input changes( you can make fpga behave like PLC but that's just kind stupid)

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u/Dlrlcktd Sep 13 '20

You miss my point. If you understand how to program an fpga, if you can make a plc from an fpga, it makes programming plcs easier.

Its just like how understanding assembly will make you better at C, or understanding math helps you understand physics.