Serial Settings:Modem Line Settings:Line DCD State
- 更新日2025-07-30
- 2分で読める
Specifies the current state of the Data Carrier Detect (DCD) input signal. This is often used by modems to indicate the detection of a carrier (modem) on the phone line. This signal is also known as Receive Line Signal Detect (RLSD). This property is read only except when the Wire Mode property is set to RS232/DCE, or RS232/Auto with the hardware currently in the DCE state.
備考欄
以下の表は、このプロパティの特性の一覧です。
| 短い名前 | DCD State |
| データタイプ |  |
| 権限 | 読み取り/書き込み |
| ランタイムエンジンで使用可能 | はい |
| リアルタイムオペレーティングシステムで利用可能 | はい |
| Unknown | -1 | |
| Unasserted | 0 | |
| Asserted | 1 |