Problems to read data from PLC with OPC UA

[adna_l2]

[ FlexSim 22.2.0 ]

Hello, I am trying to set up and opc ua connection with and Advantech Module ADAM-6317 to read data from a PLC. I am using FlexSim 22.2.0.

When I put the credentials, it tells me that the conecction is succesful.

When I try to read the variables from a Digital Input of the module, I get this error:

exception: FlexScript exception: VIEW:/active/EmulationProperties2688925552/TabControl/Variables/SplitterX/RightPanel/PropertiesPanel/OPCUAVariableSensor/Browse/BrowseUAConfiguration3206015304/Tags>eventfunctions/OnSelect c: VIEW:/active/EmulationProperties2688925552/TabControl/Variables/SplitterX/RightPanel/PropertiesPanel/OPCUAVariableSensor/Browse/BrowseUAConfiguration3206015304/Tags i: VIEW:/active/EmulationProperties2688925552/TabControl/Variables/SplitterX/RightPanel/PropertiesPanel/OPCUAVariableSensor/Browse/BrowseUAConfiguration3206015304/Tags>items/Objects/Digital_Input

To write data on PLC I don't have any problems. As you can see in this video, I send values to turn on and turn off the light and it's sucessful.

Someone can help me?

Thanks in advance.

[jason_lightfootVL7B4]

Can you read it using UAExpert?

[adna_l2]

Hello Jason!

Yes, when I use other clients (UA EXPERT, Prosys OPC e OPC EXPERT) I don't have problems, just when I try read data using Flexsim to get Digital Input, the options window doesn't even open.

I tried in the 22.1.4 version too.

[jason_lightfootVL7B4]

Does the error appear when you try to browse to the structure to select a nodeID?

[adna_l2]

Yes, it is.

We managed to reverse the problem using a python script that has a function for reading and writing a server variable. Both functions receive as a parameter the node where a variable is located and then connect with the server to perform an operation respectively. Upon reading, after establishing a functional connection, the value of the node is returned as a parameter. Through flexsim it is possible to integrate the script and obtain its return for the end of use or value to insert in a label or to serve as decision making according to the modeling logic.

[jason_lightfootVL7B4]

It sounds like you have a workaround - is that the case?

[Jeanette_Fullmer]

Hi @Adna Lima,

We haven't heard back from you. Were you able to solve your problem? If so, please add and accept an answer to let others know the solution. Or please respond to the previous comment so that we can continue to help you.

If we don't hear back in the next 3 business days, we'll assume you were able to solve your problem and we'll close this case in our tracker. You can always comment back at any time to reopen your question, or you can contact your local FlexSim distributor for phone or email help.

[adna_l2]

Yes, it's really this.

We call "gambiarra" here. It works with Adam module, but we tried the same with a Delta PLC and doens't works.

[lcavallero]

Could you share the model?

[adna_l2]

Hi Luciano!

Here's the file.

I stopped to test this model a few months ago, we decided to use a Siemens PLC and worked very well.

04_10_teste_advantech_DI_problem.fsm

[Jeanette_Fullmer]

Hello @Luciano Cavaller, Can you provide support for @Adna Lima?

[lcavallero]

Hi Adna,

thanks for the file.

If I correctly understand using a "Siemens PLC" instead of the "Advantech Module ADAM-6317" you do not have problem with connect Flexsim using the OPC UA?

[adna_l2]

Yes, it is. Here's some pictures of the test.

[jason_lightfootVL7B4]

Could you re-upload the images - they don't seem to be linked correctly.

[Jeanette_Fullmer]

Hello @Adna Lima,

The photos did not upload properly. Could you try uploading them again?

[adna_l2]

Sorry, here is the files. I emphasize that they are related to communication with PLC Siemens, the problems initially presented were with the PLC Delta, with the IoT Advantech module being a gateway.

But with Siemens PLC, I couldn't write on the variable of the type "word" as seen in the image below. I have to change the PLC data configuration to Int.

[Jeanette_Fullmer]

Hello @Luciano Cavallero

@Adna Lima photos loaded properly this time. Can you take a look?

[lcavallero]

Hi Adna,

In order to try to reproduce your problem I have some question:

- you are connecting your Siemens PLC via OPC UA: are your using the UA Server of the PLC or a third part UA Server?

- the tags FlexSim_ftOK and FlexSim_ictOK are now BOOL (as I can see in the picture): in this configuration you are able to read and write correctly, right? But when they was of type WORD in that case you weren't able to write. Correct?

[adna_l2]

Hi @Luciano Cavallero ,

- First: I'm using the UA Server of the PLC

- the tags FlexSim_ftOK and FlexSim_ictOK are now BOOL (as I can see in the picture): in this configuration you are able to read and write correctly, right? Right

But when they was of type WORD in that case you weren't able to write. Correct? Yes, it's correct.

[Jeanette_Fullmer]

@Luciano Cavallero, Are you able to provide support?