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2020-04-18T19:06:08Z
UDT's or User Defined Data types are extremely useful in the Logix platforms. Keep in mind when creating them to gourp similar data types together to achieve the best memory optimization. In other words group all your bits, integers, floats, etc together when designing the UDT. The problem with designing a type that alternates between a DINT and a Binary data type is that the processor can not just allocate a single bit adjacent to another data type. Instead one bit will be used out of a 32 bits and the other 31 bits will be wasted memory. However if you grouped 20 bits together in your UDT then some memory would be wasted, but not as much as if the bits were scattered throughout the UDT.
RSLogix500 Introduction
RSLogix500 Inserting Instructions
RSLogix500 Opening a File
RSLogix500 Creating a Project
RSLogix500 Instruction Comments
RSLogix500 Rung Comments Page Titles
RSLogix500 Inserting Branches
RSLogix500 Program Organization, Part 1 - Overview
RSLogix500 Program Organization, Part 2 - Examples
RSLogix500 Using Symbols
RSLogix500 View Properties
RSLinx
RSLogix500 Online Offline
RSLogix500 Dowloading and Uploading
RSLogix500 Processor Modes
RSLogix500 Processor and Cards
RSLogix500 Introduction to Faults
RSLogix500 Indirect Addressing
RSLogix500 Indirect Addressing Faults
RSLogix500 Handling Faults
RSLogix500 Forcing I/O
RSLogix500  Custom Data Monitor
RSLogix500 I/O Configuration
RSLogix500 Advanced Diagnostics
RSLogix500 Instructions OTL OTU, Part 1
RSLogix500 Instructions OTL OTU, Part 2
RSLogix500 Instructions OTL OTU, Part 3
RSLogix500 Instructions, OTE
RSLogix500 Instructions, XIC XIO
RSLogix500 Instructions, ADD
RSLogix500 Instructions, COP
RSLogix500 Instructions, CPT - Part 2
RSLogix500 Instructions, CTU CTD - Part 1
RSLogix500 Instructions, CTU CTD - Part 2
RSLogix500 Instructions, CTU CTD - Part 3
RSLogix500 Instructions, CPT - Part 1
RSLogix500 - Comparison - Part1
RSLogix500 - Comparison - Part 2
RSLogix500 Instructions, DIV
RSLogix500 - FIFO - FFL and FFU - Part 1
RSLogix500 - FIFO - FFL and FFU - Part 2
RSLogix500 Instructions, FLL
RSLogix500 Instructions, JMP and LBL
RSLogix500 Instructions, Masking and MEQ
RSLogix500 Instructions, MUL
RSLogix500 Instructions, MOV
RSLogix500 Instructions, LIM
RSLogix500 Instructions, NEG
RSLogix500 Instructions, OSR
RSLogix500 Instructions, RTO
RSLogix500 Instructions, SQO sequencer - Part 1 of 3
RSLogix500 Instructions, SQO sequencer - Part 2 of 3
RSLogix500 Instructions, SQO sequencer - Part 3 of 3
RSLogix500 Instructions, SUB
RSLogix500 Instructions, TOF
RSLogix500 Instructions, JSR and RET
RSLogix500 Shift registers
RSLogix500 Instructions, SQR
RSLogix500 Instructions, TON - Part 1
RSLogix500 Instructions, TON - Part 2
RSLogix500 Instructions, TON - Part 3
Introduction to Ladder Logic