User manual

Publication 1746-UM004A-US-P
P-3
Terms and Abbreviations
The following terms and abbreviations are specific to this product. For a complete
listing of Allen-Bradley terminology, refer to the Allen-Bradley Industrial
Automation Glossary, publication number ICCG-7.1.
• Module  SLC 500 BASIC and BASIC-T Modules (catalog numbers
1746-BAS and 1746-BAS-T)
• BASIC development software  BASIC Development Software (catalog
number 1747-PBASE)
• DH485  network communication protocol
• EPROM  Erasable Programmable Read Only Memory
• MTOP  system control value that holds the last valid memory address
• RS-232/423  serial communication interface
• RS-422  differential communication interface
• RS-485  network communication interface
• SLC 500  SLC 500 fixed and modular controller
Conventions Used in this
Manual
The following conventions are used throughout this manual:
• Bulleted lists such as this one provide information, not procedural steps.
• Numbered lists provide sequential steps or hierarchical information.
• Italic type is used for emphasis.
• Text in this font indicates words or phrases you should type.
• Key names match the names shown and appear in bold, capital letters within
brackets (for example,
[ENTER]
).