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1. PLC Recorder for Rockwell (formerly AB) PLC ControlLgoix series data acquisition
Tips for using PLC Recorder to collect data from Rockwell (formerly AB) PLC ControlLgoix series. When using PLC Recorder to collect data from Rockwell (formerly AB) PLC ControlLgoix series, the following tips can be followed to ensure efficient and accurate task completion:
1. Global variable collection. Directly input variable name and type: In PLC Recorder, simply enter the global variable name and corresponding variable type of the ControlLgoix series PLC to collect data.
. This approach simplifies the configuration process and improves data collection efficiency. Reference variable type correspondence diagram: To ensure the correct input of variable types, you can refer to the correspondence diagram between AB internal variable types and waveform recording software types. This chart provides a detailed list of variable types in AB PLC and their corresponding representations in PLC Recorder, which helps to avoid collection errors caused by type mismatches.2. Structure variable and array collection Nested structure variable collection: For structure variables, no matter how deep their nesting level is, simply enter the complete names of the internal elements of the structure variable in PLC Recorder (using the decimal point area hierarchy) to collect them.
. Array element collection: The collection of array elements is also simple, simply access them according to their subscripts, and support the collection of structured and nested arrays. For example, nested array elements such as A.B [10] can be collected. 3. External hardware content collection utilizes global variable table information: Each external
Fourth, Local Variable Collection: Local variable access within the program: In the PLC program, local variables can be accessed by specifying the program name and variable name.
. For example, in the program cycleLog, local variables b and members of the structure utlocal can be accessed, such as Program: cycleProg. b and Program: cycleProg. utlocal. userreal1. 5. Collect BOOL type variables directly: For BOOL type variables, they can be collected directly by their variable names. Integer variable bit acquisition: For integer variables such as byte, int, dint, etc., although the PLC can directly access their bits internally, direct bit by bit access is usually not allowed when accessing them externally. At this point, there are two solutions: assigning an alias to the bits within the PLC: assigning an alias to the bits that need to be collected in the PLC program, and then accessing them externally through this alias variable in the PLC Recorder. Offline analysis software processing: First, collect data in the format of integer variables, and then use offline analysis software (such as Ana) for bit presentation. This can be achieved by installing binary value display or creating virtual variables to extract any bit. 6、 Efficient continuous recording of collection effect: PLC Recorder can efficiently record data continuously, ensuring data integrity and real-time performance. Fault tracing and debugging: The collected data can be used for fault tracing and debugging, helping engineers quickly locate the problem and improve main
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