Hello everyone, I’m looking for assistance with utilizing bits in an N7 register to control outputs in RSLogix 500. For instance, when N7:0/10 equals 1, I want to activate output O:0/1. However, I’m encountering a challenge – every time I attempt to use N7:0/10 in an instruction, I receive an error message stating, "Address must be specified to the word level!" I would prefer not to resort to LIM comparisons to determine the value of N7:0/10. Any tips or alternative solutions would be greatly appreciated!
Sure, I can help you improve the text! However, it seems you've provided an incomplete original text. Please provide the text you would like to be rephrased so that I can assist you properly.
"The phrase 'Address must be specified to the word level!' indicates that the instruction requires a specific word. However, it appears that the input given is too vague and does not meet the requirement of a single word."
I understand your perspective, my friend. However, this doesn’t address the issue at hand.
dmargineau commented: -----|n7:0/10 |-------------(o:0/1 )----- Click to expand... This solution should meet your requirements. If it doesn't, please share the specific rung where you're encountering the error. - Jerry
RobertB, could you please share an example of your objectives? The solution provided by dmargineau should be effective, unless you are seeking a more advanced approach.
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Answer: - A1: In RSLogix 500, you cannot directly use a bit from an integer file (such as N7) in an output instruction because the software expects a word-level address. To control an output using a specific bit from an N7 register, you should use a Bit Test (XIC or XIO) instruction to evaluate the bit (e.g., N7:0/10) and then use that evaluation to drive your output logic.
Answer: - A2: This error occurs when RSLogix 500 expects a word-level address, but a bit-level address is provided inappropriately. To resolve this, ensure that bit-level addresses are only used in instructions that support bit-level operations, such as XIC (Examine If Closed) or XIO (Examine If Open), and not directly in output instructions.
Answer: - A3: While you can use LIM (Limit Test) instructions to check if the value of a word falls within a specific range, it is
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