> For the complete documentation index, see [llms.txt](https://wecon.gitbook.io/pistudio-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wecon.gitbook.io/pistudio-manual/6.-object/6.1-buttons-switchs/6.1.2-bit-lamp.md).

# 6.1.2 Bit lamp

**Introduction**

\[Bit lamp] could monitor and display the specified PLC or HMI bit address, and its state changes according to the specified address value.

**Description**

![](/files/-Luq9A_dHNvrysBfSpo3)

**1) Address**

\[Read Address] is for setting specified PLC or HMI bit address;

**2) Hide**

**Display inverted:** Display reverse state of the picture and text. \*for example, the value of write address is set ON, the OFF mode is displayed.

**Blinking:** Blinking while control bit is triggered, the frequency is editable;

Blink when ON: blink when control bit is ON;

Blink when OFF: blink when control bit is OFF;

**Hide:** Display or hide object by \[Control Bit] state

**Control bit:** For hide control;

**Hide mode:** hide when OFF; hide when ON; it could not operate if \[Invisible] is checked.

**Invisible:** object keeps hidden during project running.

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