B&B Electronics RS-232 Digital Relay I/O 232DRIO - Manual (Page 3)

232DRIO-0308 Manual Table of Contents i
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Table of Contents
Chapter 1- Introduction ........................................... 3
232DRIO Features .................................................. 3
Packing List ............................................................. 2
232DRIO Specifications........................................... 3
Opto-Isolated Input ................................................................ 3
Relay Outputs ....................................................................... 3
Power Supply ........................................................................ 3
Communications ................................................................... 3
Environment .......................................................................... 3
Size ....................................................................................... 3
Chapter 2 - Connections ......................................... 5
I/O Connections ............................................ ……… 5
Opto-isolated Input ................................................................ 5
Relay Outputs ....................................................................... 5
Ground .................................................................................. 5
Serial Port Connections ........................................... 6
Power Supply Connections ...................................... 7
Chapter 3 - Commands ........................................... 9
Syntax ................................................................... 10
I/O Data Bytes ..................................................................... 11
Read I/O Lines Command ..................................... 13
Set Output Lines Command .................................. 13
Chapter 4 - I/O Interfacing ..................................... 15
Opto-isolated Input ................................................ 15
Relay Outputs ........................................................ 17
Chapter 5 - Software .............................................. 19
Programming Techniques ...................................... 19
Opening a COM Port........................................................... 19
Closing a COM Port ............................................................ 19
QuickBasic .......................................................................... 20
Read I/O States Command ................................................. 20
Set Output States Command .............................................. 20
C/C++ .................................................................................. 21
Read I/O States Command ................................................. 21
Set Output States Command .............................................. 21