Black Box LD485A-HS, Руководство пользователя, Страница: 3 / 33

LD485A-HS and LD485A-HS Opto-Isolated
Contents
Chapter Page
1. Specifications...................................................................................................1
2. Introduction ....................................................................................................3
3. Installation.......................................................................................................4
3.1 Jumper and Switch Configuration.........................................................4
3.1.1 DTE/DCE Configuration..........................................................4
3.1.2 Frame Ground/Signal Ground ................................................4
3.1.3 Half/Full-Duplex Operation.....................................................5
3.1.4 CTS Delay...................................................................................7
3.1.5 RS-485 Driver Enable.................................................................7
3.1.6 Half-Duplex Turnaround Delay ...............................................8
3.1.7 RS-485 Interface Terminated or Unterminated ......................8
3.1.8 Normal/Loopback Operation ..................................................9
3.1.9 RS-485 Interface Line Biased (Fail-Safe)..................................9
3.2 DCE Configuration/DTE Configuration ............................................10
3.3 Typical Applications .............................................................................18
Appendix A: Pinning ........................................................................................25