While I have a good understanding of RSLogix 500, my knowledge of the Micrologix processors is limited. I am attempting to copy a string to another string, but I consistently encounter "Invalid Data Type" errors. Is it possible that the Micrologix line does not have the capability to support string copying? My research in the manuals has not provided any indication of this limitation. Could it be that I am making an error in my approach?
Consider using a MOV command in place of a COP instruction for improved efficiency and performance.
If you encounter errors while using the "ST" data type in comparison instructions, consider converting them to integers first. For detailed instructions, refer to the provided PDF document.
Mickey pointed out that the "ST" data type is not suitable for comparison operations. It is recommended to convert it to an integer first. Refer to the PDF for more information. I have not encountered this issue before, but I find it intriguing. Interestingly, the autocomplete suggests treating ST10:39.LEN as an integer, even though it is a string. How can I copy the string's length to an integer variable?
To successfully copy or move data, utilize the copy or move instruction. Check out the PDF manuals for detailed instructions.
It sounds like you might be encountering this issue due to your approach rather than a limitation of the Micrologix processors. Micrologix can definitely handle string copying. You may need to use the COP instruction rather than a MOV for string data types. RSLogix 500 and Micrologix have some differences in their command set, so, while MOV works for most data types, it doesn't support string data types. Give the COP instruction a try and see if that eliminates your "Invalid Data Type" errors.
You're on the right track for sure, string manipulation is indeed possible in Micrologix processors, it's not a limitation of the product line. The "Invalid Data Type" error you're experiencing might be due to an incorrect setup in your logic. The source and destination strings might not have the same length or the copy length you've set is exceeding the destination's length. Try to verify these things first. If the issue persists, consider sharing the part of the code you're working on, it helps to get a clearer picture!
It sounds like you’re on the right track, but the MicroLogix series indeed has some limitations when it comes to working with strings compared to more advanced processors. The string data type is supported, but you need to use specific instructions to manipulate them. Make sure you’re using the correct string handling instructions like `STR` and `CPT` for copying. If you’re trying to copy strings directly without these instructions, that could be causing the "Invalid Data Type" error. Double-check the data types you're working with and consider looking into the `SCP` or string copy instructions to ensure you're aligned with what the MicroLogix can handle.
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Answer: Answer: The "Invalid Data Type" error could be due to a mismatch in data types, incorrect addressing, or limitations in the MicroLogix processor's capabilities for string operations.
Answer: Answer: Based on the manuals and documentation, there is no explicit indication that MicroLogix processors lack the capability to support string copying. However, it's essential to verify the specific model's features and limitations.
Answer: Answer: To troubleshoot such errors, double-check the data types being used, ensure correct addressing and instruction configuration, and review the programming logic for any errors that might be causing the issue.
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