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PI Interface for Modbus Ethernet PLC

Order of data pre/post processing

  • Last UpdatedNov 05, 2024
  • 1 minute read

When input data are read from a PLC, the raw data are processed in the following order:

  1. Read Raw Data

  2. Convert Binary or BCD, to Integer or Real

  3. Apply the Bit Mask

  4. Apply the Square Root Code

  5. Apply the Conversion Factor, Span and Zero

  6. Convert to float16, float32, int16, int32, or digital for PI3

  7. When output data are written, the data are processed in the reverse order, but the bit mask conversion does not apply.

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