Comtrol UP DeviceMaster Filtering and Data Extraction - Manual (Page 5)

Chapter 1. Introduction DeviceMaster UP Filtering and Data Extraction Reference Guide: 2000470 Rev. B - 5
Chapter 1. Introduction
Programming complicated tasks on a PLC can be very difficult and time consuming. Quite simply, what may
be relatively easy to program in a high-level programming language can be very difficult in ladder logic. The
filtering and data extraction functions in the DeviceMaster UP are intended to help solve those problems for
string, RFID and barcode data.
The data extraction and filtering processes in the DeviceMaster UP are designed to offload as much work as
possible from the PLC and/or application and provide a very simple and easy to use interface for standard
RFID and barcode data. This functionality and interface is designed to save dozens, possibly hundreds of lines
of ladder logic in a typical PLC program.
1.1. Data Type Definitions
The following data type definitions apply:
UINT Unsigned Integer (16 bit)
UDINT Unsigned Double Integer (32 bit)
STRING Character String (1 byte per character)
BYTE Bit String (8 bit)