Rockwell-automation Logix5000 Controllers ASCII Strings Programming Ma Manuale Utente Scaricare il pdf (Pagina 20)

Chapter 2 Processing ASCII characters

For example, in a sorting operation, an array of a user-defined data type creates a

table that shows the lane number for each type of product. To determine which

lane to route a product, the controller searches the table for the product ID

(characters of the bar code that identify the product).

To look up a bar code, follow these procedures:

• Create the PRODUCT_INFO Data Type on page 21

• Search for the characters on page 21.

• Identify the Lane Number on page 22.

• Reject Bad Characters on page 22.

• Enter the Product IDs and Lane Numbers on page 23.

Tip:

To copy the above components from a sample project, open the Samples folder. On the Help menu, click

Vendor Sample Projects.

Look up a Bar Code

20 Rockwell Automation Publication 1756-PM013D-EN-P - October 2014

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Rockwell-automation Logix5000 Controllers ASCII Strings Programming Ma Manuale Utente Pagina 20