I/O Control of racer 2 L Cameras#
The GPIO lines are designed to accept RS-422 differential signals, but they can also be used with low voltage TTL signals. Each GPIO line can be configured to work as an input or as an output.
注意：カメラのGPIOラインに不適切な電気信号を印加すると、カメラに重大な損傷を与えるおそれがあります。
- 外部回路をGPIOラインに接続する前に、Line Mode機能を使用してラインを入力または出力用に設定します。
- 以下に指定されたとおりに、適切な入力または出力信号電圧を印加してください。
- Make sure the cable and plug you connect to the 12-pin receptacle follows the correct pin assignment. In particular, don't use a pin assignment that would be correct for Basler area scan cameras. The 12-pin receptacles of Basler line scan and area scan cameras are electrically incompatible.
入力ライン#
Using the Input Lines with RS-422#
The following diagram shows a typical circuit when each input line is designed to receive an RS-422 signal. For the camera’s I/O circuitry to operate properly, supply a ground as shown below. Enabling the 120 Ω termination resistor ensures signal integrity.
Using the Input Lines with LVTTL#
The following diagram shows a typical circuit when receiving an LVTTL (Low Voltage Transistor Transistor Logic) signal. For this purpose, the LVTTL signal must be applied to the positive (+) input pin of the camera. The termination resistor must be disabled.
電気的要件#
The following voltage requirements apply to the camera’s I/O input (pin 4 in the example above) when using LVTTL.
| 電圧 | 説明 |
|---|---|
| 0–5.0 VDC | 安全動作範囲。 |
| 0–0.8VDC | 論理0を示しています。 |
| 0.8–2.0VDCより大きい | Region where the logic level transition occurs. The logical state is not defined in this region. |
| 2.0VDCより大きい | 論理1を示しています。 |
| 6.0 VDC | 絶対最大電圧。 この電圧を超えてはなりません。カメラが破損し、保証が無効になる場合があります。 |
出力ライン#
Using the Output Lines with RS-422#
The following diagram shows a typical circuit when each output line is designed to transmit an RS-422 signal. For the camera’s I/O circuitry to operate properly, supply a ground as shown below.
Using the Output Lines with LVTTL#
The following diagram shows a typical circuit when transmitting an LVTTL signal. A low signal is indicated by a camera output voltage near zero, a high signal is indicated by an output voltage of approximately 3.3 VDC. These voltages are within the typically specified levels for low voltage TTL devices.
For the camera’s I/O circuitry to operate properly, supply a ground as shown below. The termination resistor must be disabled.
