# Edit properties of a rack

Source: https://help.malighting.com/grandMA2/en/help/key_ost_edit_properties_of_rack.html
This is grandocs, an unofficial mirror of MA Lighting documentation. For authoritative or safety-relevant information, cite the canonical page on help.malighting.com.

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You can edit the properties of racks. 

**Requirement:**

- Add MA NDPs to the network configuration

For more information see [Adding devices to your session](/grandma2/key_network_session_add_device/). 

- Open **MA Dimmer Network**

For more information on how to open the **MA Dimmer Network** see [Network dimmer](/grandma2/key_ost_network_dimmer/). 

1. []()To edit the properties of a rack, press Edit and tap a rack. The window **Rack Properties** opens.

![](/img/grandma2/popup_rack-properties_network-dimmer_v3-3-8db27c.png)

_Rack Properties_

The upper sections **Controlled by** and **Status** cannot be edited. They solely display data such as:

- Name of the NDP
- IP of the NDP
- If NDP is in session
- Voltage
- Current
- Power
- A total of the three-phase alternating current
- Temperature of the rack

**Important:**\
The lower section displaying the merge mode, data slots and input config can be edited.

2. To edit the merge mode, tap the button displayed below Merge Mode.\
   -The **pop-up Select Slot Mode** opens. 

   ![](/img/grandma2/popup_select-slot-mode_network-dimmer_v3-3-b432ec.png)

   _Select merge mode_

   -Select a mode.

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## Merge Modes

- **HTP**\
  ​Connects both slots. If both slots are active, the slot which values are higher takes precedence.​

​​

- **LTP**\
  Uses both slots. If both slots are active, the slot which values were modified the last takes precedence. 

 

- **1-Only**\
  Only uses Slot 1. 

 

- **Only-2**\
  Only uses Slot 2. 

 

- **1-Over-2**\
  Connects both slots. However, Slot 1 has the higher priority. That is, in case there is a valid signal on Slot 1 (no matter the type), the NDP ignores the signal on Slot 2. If there is no signal on Slot 1 or if the NDP detects a faulty signal on Slot 1, the NDP automatically starts to use Slot 2. 

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3. To edit a slot, tap the button displayed below Data Slot 1 and Data Slot 2.\
   -The **pop-up Slot Properties** opens.

   ![](/img/grandma2/popup_slot-properties_network-dimmer_v3-3-99a6a4.png)

   _Adjust slot properties_

   -To select a source type, tap the drop-down box and tap the corresponding protocol in the list.\
   -To select a source mode, tap the drop-down box and tap a source mode in the list.\
   -To enter a patch address, type into the green input field or tap the ![](/img/grandma2/icon_plus_small_v3-2-ae05d9.png) and the calculator opens.
4. Now, tap Please.

The properties of the slot are now applied. 

**Hint:**\
-To enable 1024 channels for the configuration patch, select **Double Universe** in the Source Mode and **DMX** in the Source Type. DMX In 1 and 2 of the NDP are used in one slot.\
-If you select **Art-Net, MA-Net2 or sACN** in the Source Type and **Double Universe** in the Source Mode, specify the two universes individually. 

5. To edit universes, tap the button displayed below Input Config.\
   -The **pop-up Input Properties** opens.

   ![](/img/grandma2/popup_input-properties_network-dimmer_v3-3-db39c8.png)

   _Edit universes_

   -To edit the universes in Line 1 and Line 2, tap the ![](/img/grandma2/icon_minus_v3-2-0401ec.png) or ![](/img/grandma2/icon_plus_v3-2-e7bd93.png) or type in the green input field using the keyboard.\
   -If you have selected Art-Net as the source type, define which Art-Net universe is used. To do so, tap the Input Config and the **pop-up Art-Net Input Properties** opens.

   ![](/img/grandma2/popup_artnet-input-properties_network-dimmer_v3-3-b843a5.png)

   _Adjust the input properties of Art-Net _

   -Adjust subnet and ID. 

**Hint:**\
-Subnet defines the upper 4bits of the Art-Net address. If you enter 0 in subnet, 1 is defined. If you enter 1, 2 is defined.\
-ID defines the lower 4bits of the Art-Net address. Entering numbers works the same as in subnet.

6. After you have edited the properties of the rack, save the settings.\
   -Tap Save on the right of the window and the **pop-up Save Rack Configuration opens**.

   ![](/img/grandma2/popup_save-rack-configuration_network-dimmer_v3-3-8e15f9.png)

   _Save the configuration_

   -The current rack is marked in a light brown color.\
   -To save the settings of the current rack, tap Save.\
   -To cancel the process, tap Cancel or ![](/img/grandma2/icon_close_small_v3-2-1c8fff.png) in the upper right corner of the pop-up.

**Hint:**\
Configurations are saved on the desk ending in **\*.rack**. They can either be saved on the internal drive or a USB stick, hence they are not saved in the show file. 

7. To delete a rack, tap Delete. 

**Important:**\
Racks can only be deleted if they are not in use or those that just have been created "offline" without the NDP controlling it. 

8. To select the next or the previous rack, tap ![](/img/grandma2/icon_previous_v3-3-f27cf0.png) or ![](/img/grandma2/icon_next_v3-3-099f26.png). 
9. To create a rack, tap New and the **pop-up Select Rack Number** opens.

   ![](/img/grandma2/popup_select-rack-number_network-dimmer_v3-3-08656c.png)

   _Select rack number_

   -Select the rack number and edit the newly created rack as described in [Rack Properties](#rack_properties).
10. To load an existing rack, tap Load and the **pop-up Load Rack Configuration opens**.

    ![](/img/grandma2/popup_load-rack-configuration_network-dimmer_v3-3-a25889.png)

    _Load an existing rack_

    -Select the drive in the drop-down below the heading.\
    Tap to select a rack and tap Open.

**Hint:**\
It is possible to load racks from an internal drive and previous software versions.

The rack is configured and the settings are applied.