Hey there! I have been experiencing difficulty with my 1769-L36ERMS Rockwell PLC as it does not allow me to move or copy literal text into a string data type. I recall being able to do this in a previous project, but with this specific PLC model, it seems to be restricted. Are there any solutions or workarounds for this issue?
It seems that the 5x70 controllers do not allow support for string literals. My assumption is that you utilized a 5x80 controller (5069-L3 or 1756-L8) for the other project. Are you utilizing this string repeatedly or only in specific conditions? If it is being used multiple times, I recommend creating a dedicated string to store the desired value and copying from there when needed.
In response to aawilliams85's comment, it seems that the 5x70 controllers may not support string literals. It is possible that a 5x80 controller (5069-L3 or 1756-L8) was used in the previous project. If you find yourself using the same string multiple times, it might be beneficial to create a separate string to store the value and then copy from that instead. I am uncertain about the necessity of passing a literal string. It may be more efficient to simply create a new string with the desired value.
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aawilliams85 mentioned that the 5x70 controllers may not support string literals, suggesting the use of a 5x80 controller (5069-L3 or 1756-L8) for the other project. It is important to determine if the string is being used multiple times or only in specific states. If it is being used repeatedly, it is recommended to create a string to store the value and copy it from there as needed. Currently, there are multiple strings being utilized, with an array created to manage them. If a solution is not found, filling them up one by one may be necessary. These strings are used on an HMI banner to indicate the machine's current state. Thank you.
If you're looking for a way to display dynamic text lists on your HMI, similar to what Siemens HMI's offer, this feature could serve as a helpful alternative for showcasing state machine processes.
Hi! It's quite possible that the issue lies with the firmware version of your PLC. Rockwell has resolved some bugs in recent versions of firmware that previously restricted certain types of data handling, including the one you're experiencing. Therefore, a firmware upgrade could be your solution. Also, ensure you're using the most recent version of your programming software. Lastly, remember only user-defined strings can hold literal text directly. Hope this helps!
Hi there! Sometimes different PLC models do have distinct rules regarding data type manipulation. Still, here's a trick that might work: instead of directly circling to copy or move text, consider creating a temporary string which will hold your data first, then use this intermediary to transfer to your target. And remember to cross-check the RSLogix software version, because sometimes compatibility issues can lead the PLC to behave unusually.
Hey! It sounds frustrating to run into that limitation with the 1769-L36ERMS. One workaround you could try is to use a temporary tag of the "STRING" type to hold the literal text before moving it to your desired string data type. This way, you can handle the data manipulation in stages. Additionally, double-check your firmware version, as sometimes certain features depend on updates that might not be present in your current setup. Hope that helps!
Hey! It sounds like you might be running into some model-specific limitations with the 1769-L36ERMS. Have you checked the data type settings in your program? Sometimes, switching to a different string handling method, like using a tag-based string or employing a function block, can help. Additionally, make sure your firmware is up to date, as certain issues can be resolved in newer versions. If all else fails, consider reaching out to Rockwell support; they might have more tailored insights for your specific setup!
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Answer: 1. Q: Why can't I move or copy literal text into a string data type with my Rockwell Automation 1769-L36ERMS PLC? The 1769-L36ERMS PLC may have restrictions that prevent direct moving or copying of literal text into a string data type. This behavior could be specific to this PLC model.
Answer: It is recommended to check the user manual or documentation of the Rockwell Automation 1769-L36ERMS PLC for any specific methods or functions that can be used to handle literal text within a string data type.
Answer: It would be helpful to reach out to Rockwell Automation support or online forums to see if others have encountered and resolved similar issues with the 1769-L36ERMS PLC.
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