Hello everyone. I am encountering a challenge with writing to a string tag that I created in Studio5k. Despite my efforts, I have not been able to resolve the issue. I have successfully done this in the past, but for some reason, it is not working in my current project. Even after copying a rung from a previous project, the problem persists. I am seeking assistance to troubleshoot and identify what may be causing this issue. This specific rung functions correctly in one project's PLC code, but not in my current one.
I recently duplicated this line of code and inserted it into my latest project. After adding appropriate tags, the system continually alerts me with the error message, "Invalid data type. Argument must match parameter data type." The issue seems to be regarding transferring a string into another string.
When using the EQU instruction, it is recommended to use double quotes instead of zero for Source B to ensure proper syntax and avoid errors.
Is this a previous iteration of Studio5000 software? The incorporation of static text in instructions is a recent development. In the past, users would have to generate a new String tag and input it in the controller tags > monitor section before being able to copy from one String to another.
When using the EQU instruction in CpLX v.30, it may be more effective to use double quotes instead of zero for Source B, as suggested by Steve Bailey. While this change worked successfully in one project, it encountered issues in another project. Make sure to double-check your syntax to ensure seamless execution in both scenarios.
Based on information from this forum thread, the compatibility issue appears to be tied to specific models.
Hey there! It's unfortunate you're having a problem with Studio5k. It's a little tricky without knowing all the specifics of your issue, but I would recommend rechecking the attributes of your string tag in the new project. Things like length, scope and data type to confirm they match with the ones from the previous project where the rung functioned correctly. Also, it might help to cross check if any interlocks, dependencies, or conflicting conditions might be affecting input/output. If you could share screenshots or even detailed error messages, we could provide much better tailored advice.
Hey there, it sounds like a frustrating issue! You mentioned copying a rung from a past successful project, which should work theoretically speaking. It might possibly be a versioning issue, or the tag in question may be in use elsewhere, resulting in potential conflicts. Also, check to ensure the data types match up correctly. If this doesn't help, could you maybe share some specific error messages or perhaps some detail from the tag summary? That might provide additional clues to pinpoint the problem.
Hey there! I've stumbled upon similar issues in the past. One thing that might be causing the glitch could be a small difference in the environment of the two projects—things like firmware revision, PLC model, or used libraries might be affecting your string tag. Also, ensure the copied rung doesn't depend on some untouched logic or global variable in your current project. Evaluating these factors may seem tedious but can often lead to the root of the problem. Keep us posted about your progress.
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Answer: 1. Q: Why am I unable to write to a string tag in Studio5k despite successfully doing so in the past? There could be various reasons causing this issue, such as incorrect tag configuration, mismatched data types, or communication problems with the PLC.
Answer: The issue could be related to differences in tag addressing, tag scope, or program logic between the two projects. Double-check these aspects for discrepancies.
Answer: Start by verifying the tag configuration, ensuring proper data types, checking for any errors in the program logic, and confirming that the PLC is correctly communicating with the software.
Answer: Review the rung's logic in both projects to identify any differences that might be causing the issue. Compare the tag configurations and ensure consistency between the projects.
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