====== Connecting the EMO-R8 to Unipi 1.1 ======
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This guide follows the [[creating-new-project-on-unipi11-hidden|]]. It describes how to connect **EMO-R8** expansion modules to Unipi 1.1 in Mervis and thus **expand it by up to 56 relay** outputs.

The addressing the module, further information, and a link to the e-shop can be found [[en:hw:03-unipi11:extension|at this link]].
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<html><span class="dev-tag dev-unipi11">Unipi 1.1</span></html>
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<html><span class="kbBlue-H4alt">What you will need:</span></html>
  - [[https://www.unipi.technology/unipi-1-1-complete-set-p123|Unipi 1.1 expansion board with Raspberry Pi]]
  - [[https://www.unipi.technology/8-relay-addon-emo-r8-p34|Expansion module EMO-R8]]
  - [[https://www.unipi.technology/2gb-industrial-microsd-card-slc-p232|MicroSD card]] for RPi
  - [[https://www.unipi.technology/power-supply-for-din-rail-5v-dc-2-4a-p65|2x 5 V⎓ / 2 A power source]]

{{ :files:img_breakline_2.png?nolink |}}

<html><span class="kbBlue-H4alt">For the purposes of this manual, it is NECESSARY:</span></html> 
  - [[creating-new-project-on-unipi11-hidden|Complete the first project with Unipi 1.1]]
  - Connect the EMO-R8 module to the Unipi 1.1 using an RJ11 cable
  - Connect power supply - wait at least one minute before the OS in the PLC starts
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===== Connection =====
In the package of the EMO-R8 module, you will find an RJ11 connecting cable using which you can easily connect the module to Unipi 1.1.
In addition to this connection, a 5 V⎓ / 0.6 A power supply must also be supplied to the module.

{{ :en:sw:01-mervis:connection_emo-r8.png?nolink |}}


===== Procedure =====
To add an EMO-R8 device, first open your solution with the assigned Unipi 1.1, including inputs and outputs.

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In the left panel of the solution, right-click on the I²C channel. In the context menu, select **Add Library Device**.

{{ :en:sw:01-mervis:01_emo-r8.png?direct |}}

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The **Add Library Device** dialog box opens, listing the various devices. In this dialog, expand the Unipi folder (v1.1) and continue with the I²C subfolder, select EMO-R8 here. Then click on the arrow icon {{:files:dialog_arrow_right.png?nolink|}} to add the device definition to the list of selected devices. Then just confirm by clicking **OK**.

{{ :en:sw:01-mervis:02_emo-r8.png?direct |}}

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Device definition is added, but the device (module) address still needs to be set.

Highlight the device definition and in the right column **Properties** set the address for the parameter **Device address** according to [[en:hw:03-unipi11:extension#addressing|physical address setting on the module]].

{{ :en:sw:01-mervis:03_emo-r8.png?direct |}}

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Now [[en:sw:01-mervis:autogen-hidden|set autogen]] for the selected relay outputs, or the entire module and **Deploy solution**.

{{ :en:sw:01-mervis:04_emo-r8.png?direct |}}

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The inputs are now added to the project and can be controlled manually in the Mervis IDE, or automatically by a program.