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Digital/Analog Inputs in the Ethernet PLC

By
Guest
on 7/16/18, 1:05 PM 184 views

Hello dear Industrial Shields,

I would like to know a brief explanation of the functionalities of your inputs. Are these inputs configured by a switch or are they enabled by default? What does it mean that they are optoisolated? 

I would like to know aswell how do I use these inputs in the sketch using your boards

 Many thanks!


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Alejandro Jabalquinto

--Alejandro Jabalquinto--

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--Alejandro Jabalquinto--
Alejandro Jabalquinto
On 7/16/18, 2:21 PM

Hello,

There are 3 kinds of inputs in our Ethernet PLCs: Digital Optoisolated, Digital Non-Optoisolated and Analog.

-The digital optoisolated as its name says, it is optoisolated. This means that the grounds don't have to match to have the same reference. This is ideal to connect digital sensors or in general digital signals from another device. This signal is detected as high from 5V to 24Vdc

-The digital non-optoisolated are found in the same place as the analog inputs. If this digital signal comes from an external device, now it must have common grounds or it won't work. This signal is detected as high from 5V to 24Vdc

-The analog inputs are found in the same place as the digital non-optoisolated inputs. If this signal comes from an external device, now it must have common grounds or it won't work. This signal works from 0 to 10V.


The inputs are enabled by default. There are some exception for the IX.5, IX.6 pins (it would be I0.5, I0.6, I1.5, I1.6, I2.5 & I2.6). These ones are configured by the switches which are found in the bottom shield. These switches let you choose between a communication protocol or these inputs.

The way to differenciate between digital or analog inputs is through the software. If you use the AnalogRead() function you will be treating that input as analog. If you use the DigitalRead() you will be treating that input as digital. 

The last thing is how to name the inputs when using our boards. The nomenclature is IX_X, being X any value available in the PLC. i.e. I0_5, I1_12, 12_0



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Asked: 7/16/18, 1:05 PM
Seen: 184 times
Last updated: 12/5/18, 1:48 PM