Frequently Asked Questions on Beckhoff TwinCAT(Part4)

Q:What should I do if opcua fails to read the array TF6100?
A:The current nodeId does not exist when the array field is written by the host computer.


The old version of the setting interface requires the following configurations.


The new version of the setting interface requires the following configurations.

Q:The el6731-0010 is unable to read the slave parameters for coe-online.
A:At least one communication process data must be added in the Profibus device.

Then click on the "Advanced" option for the module's CoeOnline.





After making the settings as shown in the above figure and then clicking "Update," you will be able to see the updated CoeOnline parameters, including the newly added parameter of 8000.
You can observe the parameters within the red box.
Q:failed to upload twincat database server congiguration

A:


The fault is that the configuration update failed, and the actual issue encountered was due to a mismatch in data type recognition between the two parties:

The fields in InfluxDB are all set to int, but TwinCAT assumes that the type should be float.

When encountering such issues caused by modifications, it is necessary to check if the data type and size are supported by both sides. If not, one side needs to be modified to match the other.

Q:Installing the .Net Framework 4.8 Developer Pack Results in an Error Message "Cannot find"

A:Cannot find object property when install .Net Framework 4.8 .



The solution is to use Windows 10 LTSC 2019, update all the system patches, install the Visual Studio development environment, and then install the .Net Framework 4.8 Developer Pack.

The reason for this is that the .Net Framework 4.8 Developer Pack is relatively new, and earlier images may lack the necessary dependency files.

Alternatively, you can use an older version of the installation package, specifically 4.8.3761 (an older build), to install the .Net Framework 4.8 Developer Pack.

https://download.visualstudio.microsoft.com/download/pr/7afca223-55d2-470a-8edc-6a1739ae3252/c8c829444416e811be84c5765ede6148/ndp48-devpack-enu.exe

Q:What are the differences between EL6021-0021 and the standard model EL6021?

A:The internal bias resistor of the standard EL6021 is less than 1 kOhm; while the internal bias resistor of the EL6021 is much greater than 1 kOhm.
When there are several EL6021 stations on the RS422/485 communication bus, the parallel connection of multiple EL6021 bias resistors on the bus may affect the normal communication of the bus. In this case, one of the EL6021 devices should be replaced with the EL6021-0021. By utilizing the higher bias resistor of the EL6021-0021 as an intermediate station, it can make the bias resistor in the entire bus match the terminal resistor, ensuring that the communication is not affected.
Q: Tc2_TcpIp.library::FB_SocketListen(SERVER) 0x80072740


A:Solution: Check if the TCP command port is occupied and if the IP address is correct. If both are correct, then increase the route memory.



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