Verifying Successful Execution Using AxisPosOK Bit

Pubblicato il Luglio 6 2025

Verifying Successful Execution Using AxisPosOK Bit

In the evolving landscape of industrial automation, as highlighted in the recent Data-driven Industry Trend Report 2023, ensuring precise and reliable positioning in SIEMENS G120 CU250S PROFINET systems is paramount. You are developing a simple positioning program in MDI for this hardware, but you face challenges in verifying its successful execution. Implementing SINAPOS in an FC and setting up telegram 111 for communication is a solid start. However, confirming the correctness of your approach is crucial. To enhance your program, verify the SINAPOS implementation and telegram communication. Ensure positions and speeds are correctly loaded by testing simple movements. While delays may not always be necessary, they could be required based on specific application needs. If intermediate operations are involved, ensure the system is ready before initiating new tasks. Ultimately, use the AxisPosOK bit to verify successful positioning execution, ensuring your program meets industry standards for reliability and efficiency.

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Quick Solution: Solve the Problem Quickly

Verify SINAPOS and Telegram 111 Communication Setup

To ensure your positioning program functions correctly, begin by verifying the SINAPOS and telegram 111 communication setup. This step is crucial as it forms the backbone of your positioning tasks. Start by checking the configuration of the SINAPOS function block and ensure that the telegram 111 is correctly set up for communication. Confirm that the telegram parameters such as the destination address, data length, and data type are accurately defined.

Use the SIEMENS TIA Portal to inspect the function block and telegram settings. Ensure that the telegram is correctly mapped to the SINAPOS function block. A common mistake is an incorrect telegram address or data length, which can lead to communication failures. Validate the setup by sending a test telegram and observing the response. If the response is not as expected, revisit the configuration settings.

Ensure Correct Loading of Position and Speed Values

Next, focus on ensuring the correct loading of position and speed values. This involves verifying that the values are correctly transferred to the respective axes. Begin by performing a simple move to a known position and speed. Use the MDI interface to input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied.

It is also essential to verify the data types and units used for position and speed values. Ensure that the values match the expected format and units (e.g., millimeters for position and RPM for speed). Incorrect data types or units can lead to unexpected behavior. Use the SIEMENS TIA Portal to inspect the data types and units in the function block and telegram settings.

Implement Delays and Verify Positioning Execution

While it may not always be necessary to insert a delay between loading positions and issuing the positioning command, consider the specific requirements of your application. If your positioning involves a job or another operation between movements, ensure that the system is not operational before starting the next positioning task. This can be achieved by using a flag or checking the busy status of the system.

To implement delays, use the WAIT instruction in your MDI program. Specify the required delay time based on your application needs. For example, if the system requires a brief pause between operations, set the delay accordingly. After implementing the delay, verify the positioning execution by monitoring the axis positions and ensuring that the system reaches the desired positions within the specified tolerance.

To verify the successful execution of positioning tasks, use the AxisPosOK bit or a similar indicator provided by the hardware. This bit indicates whether the axis has reached the desired position. Check the status of this bit after each positioning command to confirm that the task has been executed correctly. If the bit is not set, investigate potential issues such as incorrect position values, communication errors, or mechanical obstructions.

Verifying SINAPOS and Telegram 111 Communication Setup

When developing a simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET, it is crucial to ensure that your SINAPOS implementation and Telegram 111 communication setup are correctly configured. You have implemented SINAPOS in an FC and set up telegram 111 for communication, but you are uncertain if your approach is correct. This guide aims to provide you with practical steps to verify and improve your setup.
First, verify the correctness of your SINAPOS implementation. Ensure that the SINAPOS function block is correctly configured and integrated into your program. Check the parameters and data types to ensure they match the specifications of the SIEMENS G120 CU250S PROFINET. It is also advisable to test the SINAPOS function block independently to confirm that it operates as expected. This step is crucial to avoid any issues that might arise from incorrect positioning commands.
Next, focus on the Telegram 111 communication setup. Ensure that the telegram parameters are correctly defined and that the communication between the PLC and the drive is established without errors. Use diagnostic tools provided by the SIEMENS environment to monitor the communication status. Verify that the telegram 111 is correctly sending and receiving data. This step is essential to guarantee that your positioning commands are transmitted accurately and that the drive responds appropriately. If you encounter any communication errors, review the configuration settings and ensure that the network parameters are correctly set.
Additionally, ensure the correct loading of position and speed values. Test the simple move of these values to confirm that they are being set correctly. It may not be necessary to insert a delay between loading positions and issuing the positioning command, but this depends on the specific requirements of your application. If your positioning involves a job or another operation between movements, ensure that the system is not operational before starting the next positioning task. This can be achieved by using a flag or checking the busy status.
Lastly, to verify the successful execution of positioning tasks, use the AxisPosOK bit or a similar indicator provided by the hardware. This will help you confirm that the positioning has been executed correctly and that the drive has reached the desired position. Regularly monitor the status indicators and logs to troubleshoot any potential issues promptly.
By following these steps, you can improve the reliability and functionality of your simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET. Ensure that each component of your setup is correctly configured and tested to avoid potential issues and achieve optimal performance.

Loading Position and Speed Values Correctly in MDI

Ensuring Correct Position and Speed Value Loading in MDI

When developing a simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET, you must ensure that position and speed values are loaded correctly. Begin by verifying the data types and units used for these values. According to IEC 61131-3 standards, position values should be in millimeters, and speed values should be in revolutions per minute (RPM). Use the SIEMENS TIA Portal to inspect the data types and units in the function block and telegram settings. Ensure that the values match the expected format and units to avoid unexpected behavior.

Additionally, perform a simple move to a known position and speed using the MDI interface. Input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied. If the axis does not move as expected, revisit the configuration settings and ensure that the values are correctly defined. This step is crucial to avoid issues related to incorrect position and speed values.

Verifying Communication Setup for SINAPOS and Telegram 111

Verifying the communication setup for SINAPOS and telegram 111 is essential to ensure that your positioning program functions correctly. Start by checking the configuration of the SINAPOS function block and ensure that the telegram 111 is correctly set up for communication. Confirm that the telegram parameters such as the destination address, data length, and data type are accurately defined. Use the SIEMENS TIA Portal to inspect the function block and telegram settings.

A common mistake is an incorrect telegram address or data length, which can lead to communication failures. Validate the setup by sending a test telegram and observing the response. If the response is not as expected, revisit the configuration settings. Ensure that the telegram is correctly mapped to the SINAPOS function block. This step is crucial to avoid communication errors that can affect the performance of your positioning program.

Implementing Delays and Verification for Positioning Tasks

Timing Considerations: Delays in Positioning Commands

Ensuring Correct Communication with SINAPOS and Telegram 111

When developing a simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET, it is crucial to ensure that your communication setup between the SINAPOS function block and telegram 111 is correctly configured. Begin by verifying the telegram 111 parameters, such as the destination address, data length, and data type. These parameters must match the specifications outlined in the SIEMENS TIA Portal to avoid communication errors. Use diagnostic tools provided by the SIEMENS environment to monitor the communication status and confirm that data is being sent and received correctly.

Refer to IEC 61131-3 standards for proper implementation of communication protocols. Ensure that the telegram 111 is correctly mapped to the SINAPOS function block. A common mistake is an incorrect telegram address or data length, which can lead to communication failures. Validate the setup by sending a test telegram and observing the response. If the response is not as expected, revisit the configuration settings. This step is essential to guarantee that your positioning commands are transmitted accurately and that the drive responds appropriately.

Verifying Position and Speed Value Loading in Simple Move

To ensure the correct loading of position and speed values in your simple positioning program, perform a simple move to a known position and speed using the MDI interface. Input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied. If the axis does not move as expected, revisit the configuration settings and ensure that the values are correctly defined.

According to IEC 61131-3 standards, position values should be in millimeters, and speed values should be in revolutions per minute (RPM). Use the SIEMENS TIA Portal to inspect the data types and units in the function block and telegram settings. Ensure that the values match the expected format and units to avoid unexpected behavior. Additionally, perform a simple move to a known position and speed using the MDI interface. Input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied.

Implementing Delays and Operational Checks for Positioning Tasks

Ensuring System Readiness Before Next Positioning Task

Verifying SINAPOS and Telegram 111 Communication

When developing a simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET, it is essential to verify the SINAPOS and Telegram 111 communication setup to ensure seamless operation. Start by confirming the configuration of the SINAPOS function block, ensuring that all parameters such as destination address, data length, and data type are accurately defined. Use the SIEMENS TIA Portal to inspect these settings and ensure they align with the SIEMENS G120 CU250S PROFINET specifications.

Refer to the IEC 61131-3 standards for proper implementation of communication protocols. Ensure that the telegram 111 is correctly mapped to the SINAPOS function block. A common mistake is an incorrect telegram address or data length, which can lead to communication failures. Validate the setup by sending a test telegram and observing the response. If the response is not as expected, revisit the configuration settings. This step is crucial to guarantee that your positioning commands are transmitted accurately and that the drive responds appropriately.

Ensuring Correct Position and Speed Value Loading

To ensure the correct loading of position and speed values, perform a simple move to a known position and speed using the MDI interface. Input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied. According to IEC 61131-3 standards, position values should be in millimeters, and speed values should be in revolutions per minute (RPM). Use the SIEMENS TIA Portal to inspect the data types and units in the function block and telegram settings.

Additionally, ensure that the data types and units match the expected format and units to avoid unexpected behavior. If the axis does not move as expected, revisit the configuration settings and ensure that the values are correctly defined. This step is crucial to avoid issues related to incorrect position and speed values. Consider performing multiple simple moves to different positions and speeds to validate the consistency of the loading process.

Implementing Delays and System Readiness Checks

Verifying Successful Execution Using AxisPosOK Bit

Ensuring Correct SINAPOS and Telegram 111 Communication

To ensure your positioning program functions correctly, it is imperative to verify the SINAPOS and Telegram 111 communication setup. Begin by meticulously checking the configuration of the SINAPOS function block and ensure that the Telegram 111 is correctly set up for communication. Confirm that the telegram parameters such as the destination address, data length, and data type are accurately defined according to the SIEMENS G120 CU250S PROFINET specifications.

Utilize the SIEMENS TIA Portal to inspect the function block and telegram settings. Ensure that the telegram is correctly mapped to the SINAPOS function block. A common mistake is an incorrect telegram address or data length, which can lead to communication failures. Validate the setup by sending a test telegram and observing the response. If the response is not as expected, revisit the configuration settings. This step is crucial to guarantee that your positioning commands are transmitted accurately and that the drive responds appropriately.

Verifying Accurate Position and Speed Value Loading

Next, focus on ensuring the correct loading of position and speed values. Begin by performing a simple move to a known position and speed using the MDI interface. Input the desired position and speed values and execute the move command. Observe the axis movement to confirm that the values are correctly applied. According to IEC 61131-3 standards, position values should be in millimeters, and speed values should be in revolutions per minute (RPM).

Use the SIEMENS TIA Portal to inspect the data types and units in the function block and telegram settings. Ensure that the values match the expected format and units to avoid unexpected behavior. If the axis does not move as expected, revisit the configuration settings and ensure that the values are correctly defined. This step is crucial to avoid issues related to incorrect position and speed values. Consider performing multiple simple moves to different positions and speeds to validate the consistency of the loading process.

Using AxisPosOK Bit for Successful Positioning Verification

To verify the successful execution of positioning tasks, it is recommended to use the AxisPosOK bit or a similar indicator provided by the hardware. This bit indicates whether the axis has reached the desired position. Check the status of this bit after each positioning command to confirm that the task has been executed correctly. If the bit is not set, investigate potential issues such as incorrect position values, communication errors, or mechanical obstructions.

Regularly monitor the status indicators and logs to troubleshoot any potential issues promptly. By using the AxisPosOK bit, you can ensure that the positioning has been executed correctly and that the drive has reached the desired position. This verification step is essential to maintain the reliability and functionality of your positioning program in MDI for the SIEMENS G120 CU250S PROFINET.

It is important to note that the AxisPosOK bit should be checked after each positioning command to ensure the successful execution of the task. Additionally, ensure that your system is not operational before starting the next positioning task if your application involves a job or another operation between movements. This can be achieved by using a flag or checking the busy status of the system.

Frequently Asked Questions (FAQ)

Question

How can I verify the correctness of the implemented SINAPOS and telegram 111 communication in my program?

Answer

To verify the correctness of the SINAPOS and telegram 111 communication, you should perform a series of diagnostic checks. Start by ensuring that the communication parameters are correctly set in your program. Use diagnostic tools provided by the SIEMENS G120 CU250S PROFINET to monitor the communication status. Check for any error messages or communication failures. Additionally, you can implement a simple test routine that sends and receives test data to ensure the communication path is functioning correctly.

Question

What is the best way to ensure the correct loading of position and speed values?

Answer

To ensure the correct loading of position and speed values, you should perform a simple move test. Set a known position and speed value, then execute the move command. Monitor the actual position and speed during the move to verify that they match the set values. If discrepancies are found, review the parameter settings and ensure that the values are correctly formatted and within the acceptable range for your hardware.

Question

Is it necessary to insert a delay between loading positions and issuing the positioning command?

Answer

The need for a delay between loading positions and issuing the positioning command depends on the specific requirements of your application. In most cases, it is not necessary to insert a delay if the hardware can handle the rapid sequence of commands. However, if your application requires precise timing or if there are other operations that need to be completed before the next move, you may need to include a delay. Use diagnostic tools to monitor the system’s response and adjust the delay as needed.

Question

How can I ensure that the system is not operational before starting the next positioning task?

Answer

To ensure that the system is not operational before starting the next positioning task, you can use a flag or check the busy status of the system. Implement a check in your program that waits for the system to be idle before proceeding with the next move. This can be done by monitoring the busy bit or a similar indicator provided by the hardware. Additionally, you can use a job completion signal to confirm that the previous operation has been completed before initiating the next move.

Question

What is the recommended way to verify the successful execution of positioning tasks?

Answer

To verify the successful execution of positioning tasks, it is recommended to use the AxisPosOK bit or a similar indicator provided by the hardware. This bit indicates whether the axis has reached the target position within the specified tolerance. Monitor this bit after issuing the positioning command to confirm that the move has been completed successfully. Additionally, you can implement a feedback loop that checks the actual position against the target position and triggers an alert if there is a deviation beyond the acceptable tolerance.

Question

Can you provide an example of how to implement a simple move test in my program?

Answer

Certainly! Here is an example of how you can implement a simple move test in your program
plaintext
// Set target position and speed
TargetPosition := 100.0; // Example target position
TargetSpeed := 50.0; // Example target speed
// Load position and speed values
LoadPosition(TargetPosition);
LoadSpeed(TargetSpeed);
// Execute move command
MoveCommand();
// Monitor actual position and speed during the move
while (IsMoving()) {
ActualPosition := GetActualPosition();
ActualSpeed := GetActualSpeed();
// Check if actual values match target values
if (ActualPosition <> TargetPosition or ActualSpeed <> TargetSpeed) {
// Log error and stop the move
LogError(“Position or speed mismatch”);
StopMove();
}
}
// Check if the move was successful
if (IsPositionOK()) {
LogInfo(“Move executed successfully”);
} else {
LogError(“Move failed”);
}
This example demonstrates how to set target values, load them into the system, execute the move command, and monitor the actual values during the move to ensure they match the target values.

Common Troubleshooting

Issue: Incorrect SINAPOS Implementation

Symptoms: The user is unsure if the SINAPOS has been correctly implemented in the Function Block (FC). They may experience erratic positioning behavior or failure to move the axis as expected.

Solution: Verify the SINAPOS implementation by reviewing the Function Block code. Ensure that the SINAPOS parameters are correctly set and that the telegram 111 communication is properly configured. Cross-reference with the SIEMENS G120 CU250S PROFINET documentation to confirm the correct usage of SINAPOS.

Issue: Incorrect Loading of Position and Speed Values

Symptoms: The axis does not move to the expected positions or speeds. The movement may be too slow, too fast, or in the wrong direction.

Solution: Check the values being loaded for position and speed. Ensure that these values are correctly defined and that they are within the acceptable range for the hardware. Perform a simple move test to verify that the axis responds correctly to the loaded values. If necessary, adjust the values and retest.

Issue: Insufficient Delay Between Loading Positions and Issuing Commands

Symptoms: The system may not respond correctly when issuing the positioning command immediately after loading new positions. This could result in incomplete or incorrect movements.

Solution: While it may not always be necessary to insert a delay, consider the specific requirements of the application. If the hardware or application context requires it, implement a small delay between loading new positions and issuing the positioning command. Monitor the system’s response to determine the appropriate delay duration.

Issue: Job or Operation Interference Between Movements

Symptoms: If the positioning involves a job or another operation between movements, the system may start the next positioning task before the previous one is complete, leading to errors or collisions.

Solution: Ensure that the system is not operational before starting the next positioning task. This can be achieved by using a flag to indicate the completion of the previous task or by checking the busy status of the axis. Implement a check to ensure that the system is idle before initiating the next movement.

Issue: Verification of Successful Positioning Execution

Symptoms: The user is unsure if the positioning tasks have been executed correctly. They may not have a reliable way to confirm that the axis has reached the desired position.

Solution: Use the AxisPosOK bit or a similar indicator provided by the hardware to verify the successful execution of positioning tasks. Monitor this bit after issuing a positioning command to confirm that the axis has reached the target position. If the bit indicates success, the positioning task has been completed correctly.

Conclusions

In conclusion, you have taken a solid approach to developing a simple positioning program in MDI for the SIEMENS G120 CU250S PROFINET. By implementing SINAPOS in an FC and setting up telegram 111 for communication, you are on the right track. To ensure the correctness of your program, verify the SINAPOS implementation and communication setup. Confirm the correct loading of position and speed values through simple moves. Depending on your application, consider whether delays are necessary between operations. If your positioning involves jobs or other operations, ensure the system is not busy before starting the next task. Finally, use the AxisPosOK bit to verify the successful execution of positioning tasks. By following these recommendations, you can enhance the reliability and functionality of your program.
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Dott. Strongoli Alessandro

“Semplifica, automatizza, sorridi: il mantra del programmatore zen.”

Dott. Strongoli Alessandro

Programmatore
CEO IO PROGRAMMO srl

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