{"id":26561,"date":"2021-10-02T10:00:14","date_gmt":"2021-10-02T15:00:14","guid":{"rendered":"https:\/\/learncctv.com\/?p=26561"},"modified":"2022-05-18T18:28:54","modified_gmt":"2022-05-18T23:28:54","slug":"how-to-use-the-i-o-in-an-axis-camera","status":"publish","type":"post","link":"https:\/\/learncctv.com\/how-to-use-the-i-o-in-an-axis-camera\/","title":{"rendered":"How to use the I\/O on Axis cameras"},"content":{"rendered":"

In this article, I explain how the Axis I\/O ports <\/strong>work.<\/p>\n

Yeah, today is <\/span>Saturday, <\/span><\/strong>and I decided to play with the camera in my lab \ud83d\ude42<\/span><\/p>\n

You are the lucky person that will learn some cool stuff here. Just keep reading.<\/p>\n

The camera physical I\/O ports<\/h2>\n

Do you know that you can use physical and virtual I\/O ports in the Axis cameras?<\/p>\n

Here I talk about the physical ports, and later (in another article), I will let you know how the virtual I\/O ports work. Sound like a plan? Let’s keep moving…<\/p>\n

The picture below shows the Axis 233M <\/strong>Camera’s I\/Os.<\/p>\n

\"Axis<\/span><\/p>\n

You can use the input ports to connect sensors, push buttons, PIRs, etc.<\/p>\n

It’s also to use them as output ports to trigger a siren, alarms and other systems.<\/p>\n

The number of I\/O depends on the camera models.<\/p>\n

As you can see in the following picture, the Axis P1365 MK II<\/strong> has 4 physical I\/Os.<\/p>\n

\"Axis<\/span><\/p>\n

The interesting part is that these I\/O ports are not static. (at least for this model).<\/p>\n

You can change the port configuration according to your needs<\/p>\n

Let’s talk more about that….<\/p>\n

Axis camera I\/O ports configuration<\/h2>\n

OK, let’s look at the 4-pin terminal block details for the Axis P1365 MK II.<\/p>\n

Here’s a table that shows how the pins work.<\/p>\n

\"Axis<\/span><\/p>\n

As you can see, <\/span>PINs 1<\/span><\/strong> and <\/span>2<\/span><\/strong> work with <\/span>0 <\/span><\/strong>and <\/span>12 VDC<\/span><\/strong>, respectively.<\/span><\/p>\n

Static PINs<\/h3>\n

They are NOT configurable<\/strong>. So you can only use them as they are.<\/p>\n

The following picture shows an example of a LED connected to PINs 1 and 2.<\/p>\n

\"Axis<\/span><\/p>\n

The LED is lit because it received 12 VDC <\/strong>from the PINs.<\/p>\n

There’s not much you can do here. It’s ON, and that’s it.<\/p>\n

You could connect some external device to these PINs as long as the maximum load (current) is 50mA<\/strong>. However, you have no control and can’t turn the device off.<\/p>\n

This is boring, right? Don’t you want to have more control over the I\/Os?<\/p>\n

It’s time to talk about that.<\/p>\n

Configurable PINs<\/h3>\n

Did you know that “configurable” is a word? <\/p>\n

I think it is…. so, let’s use it. \ud83d\ude42<\/p>\n

In the camera web interface, there’s a menu to change the way the PINs work.<\/p>\n

You can change the ports to work as:<\/p>\n