跳转到内容

Line Mode#

通过相机的 Line Mode 功能，您可以确定或配置 I/O 线路是用作输入线、输出线还是输入-输出线。

您可以配置任何通用 I/O 线路（GPIO 线路）的线路模式。对于光电耦合 I/O 线路，您只能确定当前的线路模式。

该功能的使用#

配置线路模式#

仅应在未使用 I/O 线路时配置线路模式。否则，相机可能会表现出无法预料的行为。

设置 LineSelector parameter to the desired GPIO line.

设置 LineMode 参数设置为以下值：

  • Input: Configures the GPIO line as an input line.
  • Output: Configures the GPIO line as an output line.
  • InOut: If available, configures the GPIO line as an input-output line. This is used, e.g., for the 两线接口 和 Light Control features.

确定线路模式#

  1. 设置 LineSelector parameter to the desired I/O line.
  2. Get the value of the LineMode parameter to determine the current line mode of the I/O line.

示例代码#

// Select GPIO line 3
camera.LineSelector.SetValue(LineSelector_Line3);
// Set the line mode to Input
camera.LineMode.SetValue(LineMode_Input);
// Get the current line mode
LineModeEnums e = camera.LineMode.GetValue();

INodeMap& nodemap = camera.GetNodeMap();
// Select GPIO line 3
CEnumParameter(nodemap, "LineSelector").SetValue("Line3");
// Set the line mode to Input
CEnumParameter(nodemap, "LineMode").SetValue("Input");
// Get the current line mode
String_t e = CEnumParameter(nodemap, "LineMode").GetValue();

// Select GPIO line 3
camera.Parameters[PLCamera.LineSelector].SetValue(PLCamera.LineSelector.Line3);
// Set the line mode to Input
camera.Parameters[PLCamera.LineMode].SetValue(PLCamera.LineMode.Input);
// Get the current line mode
string e = camera.Parameters[PLCamera.LineMode].GetValue();

/* Macro to check for errors */
#define CHECK(errc) if (GENAPI_E_OK != errc) printErrorAndExit(errc)
GENAPIC_RESULT errRes = GENAPI_E_OK;  /* Return value of pylon methods */
size_t len = 0;
char e_str[64] = {0};
/* Select GPIO line 3 */
errRes = PylonDeviceFeatureFromString(hdev, "LineSelector", "Line3");
CHECK(errRes);
/* Set the line mode to Input */
errRes = PylonDeviceFeatureFromString(hdev, "LineMode", "Input");
CHECK(errRes);
/* Get the current line mode */
len = sizeof(e_str);
errRes = PylonDeviceFeatureToString(hdev, "LineMode", e_str, &len);
CHECK(errRes);

# Select GPIO line 3
camera.LineSelector.Value = "Line3"
# Set the line mode to Input
camera.LineMode.Value = "Input"
# Get the current line mode
e = camera.LineMode.Value

您也可以使用 pylon Viewer 轻松设置参数。