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====== MKWare_GetItemBySN ======

<WRAP justify>
The function block transmits a ProductDesignation and ProductSN to //MK|Ware// and receives a GUID for the current product.
</WRAP>

===== VAR_INPUT =====

<code JavaScript [enable_line_numbers="false"]>
VAR_INPUT
    PDAtoPLC_GotItem:             BOOL;             (* Output from MK|Ware: variable is set to TRUE when a ProductSN has been read. *)
    PDAtoPLC_ProductGUID:         STRING;           (* Output of MK|Ware: Contains the unique ID for MK|Ware internal identification. *)

    Enable:                       BOOL  := TRUE;    (* Reset all signals. *)
    GetItem:                      BOOL;             (* Start signal to request a new article. *)
    ProductDesignation:           STRING;           (* Product designation *)
    ProductSN:                    STRING;           (* Contains the ProductSN for the product. *)
    TimeoutTime:                  TIME  :=t#10S;    (* Value for timeout. *)
    DelayTime:                    TIME  :=t#300ms;  (* Value for delay time. )
END_VAR
</code>

===== VAR_OUTPUT =====

<code JavaScript [enable_line_numbers="false"]>
VAR_OUTPUT
    PDAfromPLC_GetItem:               BOOL;     (* Output to MK|Ware: If the status is TRUE, a ProductSN should be read. *)
    PDAfromPLC_ProductDesignation:    STRING;   (* Output to MK|Ware: Contains the current product. *)
    PDAfromPLC_ProductSN:             STRING;   (* Output to MK|Ware: Contains the ProductSN for the product. *)

    TimeoutError:                     BOOL;     (* A TimeoutError is triggered after a specified period of time has elapsed. *)
    Busy:                             BOOL;     (* Is TRUE after start signals and FALSE after an abort or the return message from MK|Ware. *)
    GotItem:                          BOOL;     (* Pass-through signal from MKWare. *)
    ProductGUID:                      STRING;   (* Pass-through signal from MKWare. *)
    Error:                            STRING;   (* Description of the error for error analysis *)
    ErrorID:                          INT;      (* Error ID for error analysis *)
END_VAR
</code>

===== Example of a function block =====

{{:de:interfaces:mkcollector:pde:getitembysn:pasted:20241029-100629.png}}