user manual

DUAL PORT RS-232↔422/485 SERIAL INTERFACE
Contents
Chapter Page
1. Specifications...................................................................................................1
2. Introduction ....................................................................................................2
2.1 Overview..................................................................................................2
2.2 What’s Included......................................................................................2
2.3 Features ...................................................................................................3
2.4 Technical Description ............................................................................4
3. Address Selection............................................................................................6
4. Option Selection .............................................................................................7
4.1 Port Enable/Disable...............................................................................7
4.2 RS-232 Interface Options .......................................................................9
4.3 RS-422/485 Interface Options.............................................................10
4.4 Line Termination .................................................................................11
5. Installation.....................................................................................................12
Appendix: Circuit-Board Design.......................................................................14