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Variant "Write" b) PLC generates product code independently

Variable Data type Description Direction
Written* BOOL This variable sets PLC when new data is available and PLC sets it back to FALSE From PLC to MES
Written* BOOL This variable writes TRUE to MES when the data has been stored in the database. MES resets it to FALSE From MES to PLC
Product code* STRING This variable allows the PLC to specify the unique embossing text to which the data refers From PLC to MES
Product* STRING This variable allows the PLC to specify a product; e.g. the recipe name (can be static) From PLC to MES
Product ID* STRING The generated database GUID is provided by MES to the PLC, so that further measured values can be assigned faster From MES to PLC
Measured value 1..N* miscellaneous The measured values or states of the produced part can be specified here in various data formats From PLC to MES

  • Section 1:
    • {Product} is set by PLC at least 300ms before {Write}.
    • {product code} is set by PLC at least 300ms before {write}
    • {Measured values 1..N} is set by PLC at least 300ms before {write}
  • Section 2:
    • {Write} is set by PLC.
  • Section 3:
    • {Product ID} is set by MES.
  • Section 4:
    • {Written} is set by MES
  • Section 5:
    • {Write} is reset by PLC (Reason: rising edge {Write}).
    • {Product} is reset by PLC (Reason: rising edge {Written})
    • {Product code} is reset by PLC (Reason: rising edge {Written})
    • {Measured values 1..N} is reset by the PLC (Reason: rising edge {Written})
  • Section 6:
    • {Written} is reset by MES (Reason: falling edge of {Written}).
    • {Product ID} is reset by MES (Reason: falling edge of {Write})