All Questions
11
questions
0
votes
1
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287
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Using 0-3 V sensor with 0-10 V PLC
I have a sensor that generates an analog 0-3 V output signal. I would like to connect this sensor to a PLC which has only 0-10 V analog inputs.
My questions are:
Is this recommended to do in general? ...
- 407
0
votes
1
answer
150
views
How I can read a 5 V input state correctly with an Arduino?
I want to read the output of a PLC with an Arduino. If the PLC sends a HIGH (5 V) on a OUTPIN, the Arduino should read this HIGH, else LOW. I am generally using this code for this:
...
- 1,139
0
votes
2
answers
88
views
Explanation of Analog Input Module
I'm trying to wire this module. I'm just confused as to what the difference is between the two triangles and how would I connect them?
- 33
2
votes
2
answers
2k
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A very basic question about PLC field input switches
Below shows two simple ladder logic examples written for a PLC:
As far as I understand, the -| |- and -|/|- above are the symbols we write for the PLC not the actual input switches.
But we also need ...
- 1,016
0
votes
1
answer
199
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When using mA on analog devices, does the other wire go to 0V or Earth?
On the Schneider analog input module (link) we have IC, IV, IS, 0V and Earth terminals for a single channel.
I've seen people connecting the signal wire from a transducer to the IC terminal and the ...
- 347
1
vote
3
answers
1k
views
Can I connect Inductive Proximity sensor to two different PLC
Some background, I have a tractor that I want to make semi-autonomous.
The tractor has it own PLC and an NPN Proximity sensor to measure speed.
I have industrial PLC by Unitronics (V130) with I/O ...
- 23
1
vote
2
answers
3k
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Matching sensor output with PLC input
I am trying to add a height captor for a line of my production where I work. I found this Banner captor (QS30LLPQ) and it has 2 bipolar discrete outputs (PNP and NPN). Now, I am trying to decide which ...
0
votes
2
answers
273
views
Is it possible to accept analog input, digital input and provide digital output and analog out on a single MCU Pin?
This is based on my previous question here:
How to accept switched GND or switched Positive on a 3v3 MCU input
But I want to go further so I think it is best to ask a new question.
My device is much ...
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0
votes
2
answers
1k
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Updating outputs in PLCs
For all PLC manufacturers, is Mass I/O copying the choice for updating outputs?
I found that there is another possible method: the continuous I/O updating.
Can anyone tell me what is the reason for ...
- 243
2
votes
1
answer
578
views
How to work out or calculate this circuit?
I'm not an engineer, I understand a lot but I fail to understand how it works and how to calculate this for a 24vdc input:
- 21
3
votes
1
answer
2k
views
Voltage detection / Universal uC Input => CLD, PTC
I'm currently developing a open-source "Home-PLC" for home automation. Every thing runs fine so far and I have a module with fixed voltage AC inputs and outputs.
In the next step I want the build '...
- 31