485DSS-0812 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
