Skip to content

Transport Layer Parameters#

In the pylon API, the term "transport layer" is used to refer to physical interfaces such as GigE or Camera Link.

The pylon API provides access to several different transport layers:

  • PylonGigE for Gigabit Ethernet cameras using the GigE Vision protocol
  • PylonUsb for USB3 Vision-compliant cameras
  • PylonCLSer for Camera Link cameras using the CL serial interface (limited to camera configuration only; not available on Linux and macOS platforms)

This topic describes the parameters related to transport layers.

General Parameters#

Command Duplication Enable#

Use the CommandDuplicationEnable parameter to enable sending all commands and receiving all acknowledges twice. This option should only be enabled in case of network problems.

Heartbeat Timeout#

The HeartbeatTimeout parameter specifies the heartbeat timeout on the host side.

This parameter is the equivalent of the GevHeartbeatTimeout parameter, which sets the heartbeat timeout on the camera side.

The HeartbeatTimeout and GevHeartbeatTimeout parameters are synchronized automatically. If you change one parameter, the other one changes accordingly.

Maximum Retry Count Read#

Use the MaxRetryCountRead parameter to specify the maximum number of retries for read operations after a read operation has timed out.

Maximum Retry Count Write#

Use the MaxRetryCountWrite parameter to specify the maximum number of retries for write operations after a read operation has timed out.

Migration Mode Enable#

Use the MigrationModeEnable parameter to enable mapping of certain SFNC 1.x node names to SFNC 2.x node names. This allows you to write code for camera devices that are compatible with different SFNC (Standard Features Naming Convention) versions.

For more information, see the Migrating Existing Code for Using SFNC 2.x-Based Camera Devices section in the pylon API Documentation.

Read Timeout#

Use the ReadTimeout parameter to specify the read access timeout value in milliseconds.

Adjusting the value can be helpful if the execution of GigE Vision Control Protocol commands takes longer than expected.

Write Timeout#

Use the WriteTimeout parameter to specify the write access timeout value in milliseconds.

Adjusting the value can be helpful if the execution of GigE Vision Control Protocol commands takes longer than expected.

Statistics Parameters#

Last Error Status#

The Statistic_Last_Error_Status parameter indicates the last error status for a read or write operation.

Last Error Status Text#

The Statistic_Last_Error_Status_Text parameter indicates the status code of the last failed buffer.

Read Operations Failed Count#

The Statistic_Read_Operations_Failed_Count parameter counts the number of failed read operations.

Read Pipe Reset Count#

The Statistic_Read_Pipe_Reset_Count parameter counts the number of read pipe resets.

Read Write Timeout Count#

The StatisticReadWriteTimeoutCount parameter counts the number of timeouts during read and write operations when waiting for a response from the device.

Write Operations Failed Count#

The Statistic_Write_Operations_Failed_Count parameter counts the number of failed write operations.

Write Pipe Reset Count#

The Statistic_Write_Pipe_Reset_Count parameter counts the number of write pipe resets.

Sample Code#

// ** General Parameters **
// Command Duplication Enable
camera.GetTLParams().CommandDuplicationEnable.SetValue(true);
// Heartbeat Timeout
camera.GetTLParams().HeartbeatTimeout.SetValue(3000);
// Maximum Retry Count Read
camera.GetTLParams().MaxRetryCountRead.SetValue(2);
// Maximum Retry Count Write
camera.GetTLParams().MaxRetryCountWrite.SetValue(2);
// Migration Mode Enable
camera.GetTLParams().MigrationModeEnable.SetValue(true);
// Read Timeout
camera.GetTLParams().ReadTimeout.SetValue(500);
// Write Timeout
camera.GetTLParams().WriteTimeout.SetValue(500);
// ** Statistics Parameters **
// Last Error Status
int64_t lastErrorStatus = camera.GetTLParams().Statistic_Last_Error_Status.GetValue();
// Last Error Status Text
GenICam::gcstring lastErrorStatusText = camera.GetTLParams().Statistic_Last_Error_Status_Text.GetValue();
// Read Operations Failed Count
int64_t readOperationsFailedCount = camera.GetTLParams().Statistic_Read_Operations_Failed_Count.GetValue();
// Read Pipe Reset Count
int64_t readPipeResetCount = camera.GetTLParams().Statistic_Read_Pipe_Reset_Count.GetValue();
// Read Write Timeout Count
int64_t writePipeResetCount = camera.GetTLParams().StatisticReadWriteTimeoutCount.GetValue();
// Write Operations Failed Count
int64_t writeOperationsFailedCount = camera.GetTLParams().Statistic_Write_Operations_Failed_Count.GetValue();
// Write Pipe Reset Count
int64_t writePipeResetCount = camera.GetTLParams().Statistic_Write_Pipe_Reset_Count.GetValue();

// ** General Parameters **
// Command Duplication Enable
camera.Parameters[PLTransportLayer.CommandDuplicationEnable].SetValue(true);
// Heartbeat Timeout
camera.Parameters[PLTransportLayer.HeartbeatTimeout].SetValue(3000);
// Maximum Retry Count Read
camera.Parameters[PLTransportLayer.MaxRetryCountRead].SetValue(2);
// Maximum Retry Count Write
camera.Parameters[PLTransportLayer.MaxRetryCountWrite].SetValue(2);
// Migration Mode Enable
camera.Parameters[PLTransportLayer.MigrationModeEnable].SetValue(true);
// Read Timeout
camera.Parameters[PLTransportLayer.ReadTimeout].SetValue(500);
// Write Timeout
camera.Parameters[PLTransportLayer.WriteTimeout].SetValue(500);
// ** Statistics Parameters **
// Last Error Status
Int64 lastErrorStatus = camera.Parameters[PLTransportLayer.Statistic_Last_Error_Status].GetValue();
// Last Error Status Text
string lastErrorStatusText = camera.Parameters[PLTransportLayer.Statistic_Last_Error_Status_Text].GetValue();
// Read Operations Failed Count
Int64 readOperationsFailedCount = camera.Parameters[PLTransportLayer.Statistic_Read_Operations_Failed_Count].GetValue();
// Read Pipe Reset Count
Int64 readPipeResetCount = camera.Parameters[PLTransportLayer.Statistic_Read_Pipe_Reset_Count].GetValue();
// Read Write Timeout Count
Int64 writePipeResetCount = camera.Parameters[PLTransportLayer.StatisticReadWriteTimeoutCount].GetValue();
// Write Operations Failed Count
Int64 writeOperationsFailedCount = camera.Parameters[PLTransportLayer.Statistic_Write_Operations_Failed_Count].GetValue();
// Write Pipe Reset Count
Int64 writePipeResetCount = camera.Parameters[PLTransportLayer.Statistic_Write_Pipe_Reset_Count].GetValue();

You can also use the pylon Viewer to easily set the parameters.