Black Box IC476A-F-R2 - Manual (Page 5)

4
ASYNC 232
↔422/485 CONVERTER
Contents
1. Specifications...............................................................................................5
2. Introduction................................................................................................7
3. Configuration..............................................................................................8
3.1 Setting the DTE/DCE Switch................................................................9
3.2 DIP-Switch Configuration ..................................................................10
3.2.1 DIP-Switch Settings ..................................................................11
3.2.2 Configuration Switch Applications...........................................13
3.2.3 When You’re Finished Configuring.........................................13
4. Installation.................................................................................................14
4.1 Connection to the RS-485 Interface...................................................14
4.1.1 4-Wire Connection Using the DB25 (IC477A or 78A-X-R2) ..14
4.1.2 4-Wire Connection Using Terminal Blocks (IC476A-X-R2)...15
4.1.3 2-Wire Connection....................................................................18
4.2 Connection to the RS-232 Interface...................................................19
4.3 Wiring for Multipoint Applications....................................................19
4.4 Operation............................................................................................20
Appendix A. RS-232C Pin Configurations..................................................21
Appendix B. 422/485 (530) Pin Configuration ...........................................22
Appendix C. Self-Test..................................................................................23