activePDF Toolkit 2011 API Reference
MSI Plessey
Appendices > Symbologies > Numeric Symbologies > MSI Plessey

Glossary Item Box


Other Names

Plessey Code, MSI Code, Texlon Code, Anker Code, Modified Plessey, Plessey Code with Bidirectional Reading Support

Overview

MSI is a modified form of the Plessey Code that has been widely used in the retail industry. The barcode format is not as prevalent as it once was and remains for software compatibility.

Encoding

MSI/Plessey encodes 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Structure

MSI/Plessey has the following structure:
  • Start bar.
  • Encoded value.
  • Check digit(s).
  • Stop bar.

Requirements

MSI/Plessey barcodes have a fixed-length and do not perform self-checking. A start, stop, and check digit character are required in every barcode.

MSI/Plessey can make use of two check digits, but the choice to implement or read the digit depends on the application. Toolkit automatically calculates and applies the checkdigit.