Solution for PMM60 series CANopen communication integrated servo motor PDO not working properly

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LMS_FanLg2024-07-1170 views

With the continuous improvement of modern automation, the application of integrated motors is gradually becoming a new trend in the industry.

Integrated servo motor It is a commonly used device in modern industrial automation systems. It integrates functions such as servo motors, drivers, and controllers, and provides efficient and precise motion control. In its system, we usually use PDO (Process Data Object) as the data transmission method.

However, sometimes we may encounter problems with the integrated servo motor PDO not working properly. This article will introduce some common problems and provide solutions.

It is a common problem that the integrated servo motor PDO cannot be used normally, but these problems can be solved by carefully checking the configuration, resolving network connection problems, ensuring the correct transmission type and parameter settings, handling device status problems, and using compatible drivers and software tools.

If the PDO (Process Data Object) of the PMM series integrated servo motor cannot be used normally, you can try the following solutions:

01.Check the configuration

Configuration error is one of the common problems that causes the integrated servo motor PDO to not work properly.

Before using PDO, we need to correctly configure the object dictionary and PDO mapping table. Make sure the configuration matches the capabilities and requirements of the device, otherwise the data may not be transmitted correctly.

Carefully check the configuration and make necessary changes to ensure correct mapping and parameter settings.

02.Check network connection

Network connection problems may also cause PDO to not work properly. CANopen network connection is the basis of PDO transmission, so it is necessary to ensure that the connection is normal.

Check whether the cable connection is firm and the bus terminal resistance is set correctly. Use the CANopen tool to check whether the network communication is normal and check whether there are any error messages.

If a connection problem is found, repair or replace the cable and ensure that the bus terminal resistance is set correctly.

03.Check PDO Mapping

PDO transmission type error is also one of the common problems. According to the needs of the device, select the correct PDO transmission type, such as synchronous, asynchronous, event-driven, etc. Make sure that the selected transmission type is compatible with the device.

In addition, check whether the PDO mapping is correct. Make sure that the data type and length in the PDO data and object dictionary match.

If the PDO mapping is wrong, the data may not be transmitted correctly. Carefully check the PDO mapping settings and make necessary changes.

For example: Some customers use the upper computer Nimstudio to restore PDO, and an error occurs. PDO mapping parameters cannot be displayed normally

Solution:

The COB-ID of TPDO1 defaults to 0X181, and the client motor is 0X1. It is necessary to send a message to modify it. The modification method is shown in the figure below:

04.Check PDO parameters

Problems may also occur if the PDO transmission parameter settings are incorrect. These include transmission cycle, transmission delay, and communication rate. Make sure these parameters match the device's requirements.

If the parameters are set incorrectly, transmission failure or data loss may occur.

Therefore, check the parameter settings carefully and make necessary changes.

05.Checking the device status

Another possible problem is the device status. Check the status and alarm information of the integrated servo motor.

If the device is in an alarm or fault state, it may affect the normal operation of PDO. Check the status and alarm information of the device, and resolve any problems, then test PDO again.

06.Update the firmware

Finally, driver and software tool issues can also prevent PDO from working properly.

Make sure the CANopen driver and software tool you are using is compatible with the integrated servo motor and is configured correctly. If possible, try testing with a different driver or software tool.

Sometimes, driver or software tool issues can prevent PDO from working properly.

The above is all the content shared today. If the above methods still cannot solve the problem, please contact us in time.

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