> For the complete documentation index, see [llms.txt](https://docs.isemc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.isemc.com/product-setup/untitled-1/vk-series/vk-s-1/api.md).

# API

### [Video Wall System](https://www.isemc.com/video-wall-software)

## Program Protocol for iSEMC VK Series

#### (V1.5)

### 1-Communication Settings

#### Serial port communication

Baud rate: 115200                                                                                                                                                     Check Digit: None                                                                                                                                                       Data bits: 8bit                                                                                                                                                                Stop bits: 1bit

### 2-Instruction Formats

#### 2.1 \[%=QNIP(CR)]

Query device IP address

#### 2.2 \[%=SNIP:a;b;c;d(CR)]

Change the device IP address to a.b.c.d                                                                                                                  For example: %=SNIP:192;168;1;100(CR)

#### 2.3 \[%=SCSV:a(CR)]

Save the scene, the scene number is a                                                                                                                    For example: %=SCSV:2(CR) // The current scene is saved as scene 2, and the value of scene number a is (1\~32).

#### 2.4 \[%=SCLD:a(CR)]

Call the scene, the scene number is a                                                                                                                         For example: %=SCLD:2(CR) // Call scene 2, and the value of scene number a is (1\~32).

#### 2.5 \[%=SCPI:a(CR)]

Set the scene polling interval to a                                                                                                                             For example: %=SCPI:60(CR) // The value of a is (10\~99999) seconds.

#### 2.6 \[%=SCPL:a;b;c;d;e;f;g;h(CR)]

Select scene settings polling                                                                                                                                     For example: %=SCPL:1;2;3;4;5;6;7;8(CR) // Up to 8 scenes can be selected. If only %= SCPL is entered, all valid scenes are polled.

#### 2.7 \[%=SCPS:a(CR)]

Switch scene polling, a is 1 (on) / 0 (off)                                                                                                                 For example: %=SCPS:1(CR)

#### 2.8 \[%=SOIS:a;b(CR)]

Switch all input source a windows to input source b                                                                                             For example: %=SOIS:1;2(CR)

#### 2.9 \[%=QGID(CR)]

Query the group number

#### 2.10 \[%=SGID:a(CR)]

Switch grouping to group a                                                                                                                                        For example: %=SGID:1(CR) // The value of a is (1\~4).