> For the complete documentation index, see [llms.txt](https://nviasoft.gitbook.io/nviasoft-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nviasoft.gitbook.io/nviasoft-docs/api-reference/item-parsing/getlimittransition.md).

# GetLimitTransition

### int GetLimitTransition(int VID, ref int pnLimitID, ref int pnTransitionType, ref string sCurVal, ref string sUpperLimit, ref string sLowerLimit)

\
지정한 VID(Variable ID)에 대해 발생한 리미트 전환(Limit Transition) 상세 정보를 조회합니다. 현재 값은 얼마인지, 어떤 리미트 설정(LimitID)에 걸렸는지, 그리고 상/하한 임계값은 무엇이었는지를 한꺼번에 파악할 수 있게 해줍니다.

Parameters

<table data-header-hidden><thead><tr><th width="175"></th><th width="165"></th><th></th></tr></thead><tbody><tr><td><strong>Name</strong></td><td><strong>Type</strong></td><td><strong>Description</strong></td></tr><tr><td>VID</td><td>int</td><td>모니터링 대상 변수 ID</td></tr><tr><td>pnLimitID</td><td>ref int</td><td>(Output) 위반이 발생한 리미트의 고유 ID</td></tr><tr><td>pnTransitionType</td><td>ref int</td><td>(Output) 전환 유형 (예: 리미트 진입, 리미트 이탈 등)</td></tr><tr><td>sCurVal</td><td>ref string</td><td>(Output) 이벤트 발생 시점의 현재 데이터 값</td></tr><tr><td>sUpperLimit</td><td>ref string</td><td>(Output) 설정되어 있던 상한 임계값</td></tr><tr><td>sLowerLimit</td><td>ref string</td><td>(Output) 설정되어 있던 하한 임계값</td></tr></tbody></table>

```csharp
void CheckVariableLimit(int targetVID)
{
    int limitID = 0;
    int transitionType = 0;
    string curVal = "", upper = "", lower = "";

    // 특정 변수의 리미트 전환 정보 조회
    int result = m_gem.GetLimitTransition(targetVID, ref limitID, ref transitionType, ref curVal, ref upper, ref lower);

    if (result >= 0)
    {
        Console.WriteLine($"[VID: {targetVID}] Limit Event 발생!");
        Console.WriteLine($"현재값: {curVal} (범위: {lower} ~ {upper})");
        Console.WriteLine($"Limit ID: {limitID}, 전환유형: {transitionType}");
    }
}
```


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