# 6.5.1 Indirect window

**Introduction**

Indirect window is used for displaying sub-screen in HMI project. Users could control it display different sub-screens by change read address value;

**Description**

![](https://3950998874-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Lup_3URExwDkfqKABSb%2F-LuqS9sn8hxtq7GN4DAu%2F-LuqTD0lRCUmajDaPmdA%2Fimage.png?alt=media\&token=800c27a8-ad57-4f66-951d-ac92bc5ef6e7)

**1) Screen No.**

There are two modes for sub-screen display, one is static screen, and the other is dynamic screen, and switch screen by change read address value. User could only choose one of the two modes.

**Indirect scree No.:** It is for setting read address to switch sub-screen;

**Screen No.:** Check it to enable static screen mode, and select screen for object;

**2) Control display by address**

Control display of the indirect object through bit address.

* Set ON: Display;
* Set OFF: Hide;

**3) Position**

It is for setting the position of sub-screen, the value is for coordinates of the top left point of it;

**4) Size**

It is for setting the size of sub-screen;

**Result**

When configuration is completed as below, sub screen will be displayed as picture show.

1. Display static sub-screen;
2. Use HDX0.0 to control display or hide;

![](https://3950998874-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpi-series-user-manual%2F-Luq9wKJQBne8wcN8ulg%2F-LuqA7SgSvdIzqrGXMFh%2F2.png?generation=1575014403570251\&alt=media)

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