Error Logging

Table of Contents

• 🔹 What is Error Logging?
• 🔹 Error Logging Overview
• 📜 Sample Code

Utilize error logging to record and trace errors in RMP objects, aiding in debugging and ensuring efficient problem resolution during code execution.

🔹 What is Error Logging?

Error logs record RSIObjects errors that occur during the execution of code so you can target problems when debugging.

🔹 Error Logging Overview

All RSIObjects have error logs. This utility helps to trace errors when a program fails and aids in debugging.

Observe the below sample code to learn how to catch and display error logs.

📜 Sample Code

• C#

  /*  This sample demonstrates how to read RsiError objects from the error log.
      It shows how to turn off exceptions, perform operations that generate errors,
      and then read and display error messages from the error log.
  */
   
  using RSI.RapidCode; // RSI.RapidCode.dotNET;
   
  Console.WriteLine("📜 Error Logs");
   
  // get rmp objects
  MotionController controller = MotionController.Get();
   
  try
  {
      Helpers.CheckErrors(controller);
   
      Axis axis = controller.AxisGet(axisNumber: 0);
      Helpers.CheckErrors(axis);
   
      // turn exceptions off (errors will be logged as RsiError objects)
      controller.ThrowExceptions(false);
      axis.ThrowExceptions(false);
   
      // cause an errors
      controller.RecorderStart();   // recorder count is zero
      axis.MoveVelocity(0.0, 0.0);  // zero acceleration
   
      // print error count
      var controllerErrorCount = controller.ErrorLogCountGet();
      var axisErrorCount = axis.ErrorLogCountGet();
      Console.WriteLine($"Controller error count: {controllerErrorCount} (expected: 1)"); 
      Console.WriteLine($"Axis error count: {axisErrorCount} (expected: 1)");
   
      // print controller errors
      while(controller.ErrorLogCountGet() > 0)
      {
          // ErrorLogGet retrieves and removes the next error from the log
          RsiError error = controller.ErrorLogGet(); 
          Console.WriteLine($"  Controller Error: {error.Message}");
      }
   
      // print axis errors
      while( axis.ErrorLogCountGet() > 0)
      {
          RsiError error = axis.ErrorLogGet();
          Console.WriteLine($"  Axis Error: {error.Message}");
      }
   
      // print error count after reading logs
      Console.WriteLine($"Controller error count: {controller.ErrorLogCountGet()} (expected: 0)");
      Console.WriteLine($"Axis error count: {axis.ErrorLogCountGet()} (expected: 0)");
   
      // verify error count
      if(controllerErrorCount < 1 || axisErrorCount < 1)
          throw new Exception("❌ Error log did not record expected errors.");
  }
  // handle errors as needed
  finally
  {
      controller.Delete();  // dispose
  }