B&B Electronics 485DSS - Manual (Page 3)

485DSS-0308 Manual Table of Contents i
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
TABLE OF CONTENTS
CHAPTER 1: HARDWARE ................................................................... 1
I NTRODUCTION ........................................................................................ 1
Figure 1. Example of an RS-485/422 Multi-Node Network ...................... 1
C HECKLIST ............................................................................................... 1
S PECIFICATIONS ....................................................................................... 2
Figure 2. Top View of Circuit Board .......................................................... 2
P ORT C ONFIGURATION ............................................................................. 2
RS-485/422 Port .................................................................................. 2
Table 1. RS-422/485 Port ...................................................................... 3
RS-232 Port ......................................................................................... 3
Table 2. RS-232 DTE DB25P Connector Chart .................................... 4
RS-422/485 Wiring .............................................................................. 4
2-Wire Mode ........................................................................................ 4
Table 3. Component Values For Send Data Timing .............................. 5
Figure 3. RS-485 Wiring Diagram ............................................................. 6
4-Wire Mode ........................................................................................ 6
Figure 4. RS-422 Wiring Diagram ............................................................. 7
RS-485 AND RS-422 T ERMINATION ......................................................... 7
P OWER S UPPLY ........................................................................................ 7
O PERATION .............................................................................................. 8
Figure 5. Simplified Functional Diagram .................................................. 9
C OMMUNICATION C ONFIGURATION ......................................................... 9
D ISTRIBUTED S MART S WITCH C OMMANDS .............................................. 9
The Command String ......................................................................... 10
ON Command .................................................................................... 10
OFF Command .................................................................................. 11
STATUS REQUEST Command ......................................................... 11
S ETTING THE 485DSS A DDRESS ............................................................ 14
Table 4. Address Switch ...................................................................... 14
B INARY F ILE T RANSFER ......................................................................... 15
CHAPTER 2: SOFTWARE .................................................................. 16
D ESCRIPTION ........................................................................................ 16
APPENDIX A: ASCII CHARACTER CODES ................................ A-1
APPENDIX B: DECIMAL/HEXADECIMAL CONVERSIONS ..... B-1
Table 5. Hex/Dec Conversions ............................................................... B-1
APPENDIX C: CABLE CHARTS ...................................................... C-1