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Documentation Number 232OPSDA1397 Manual Table of Contents i
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
TABLE OF CONTENTS
CHAPTER 1: INTRODUCTION...........................................................1
232OPSDA F
EATURES...........................................................................1
P
ACKING LIST .........................................................................................2
S
OFTWARE INSTALLATION ......................................................................3
232OPSDA S
PECIFICATIONS ..................................................................3
Analog to Digital Converter ..............................................................3
Digital Input.......................................................................................4
Digital Output....................................................................................4
Power Supply.....................................................................................4
Communications ................................................................................4
CHAPTER 2: CONNECTIONS .............................................................5
A/D C
ONNECTIONS.................................................................................5
D
IGITAL I/O CONNECTIONS.....................................................................7
Digital Input.......................................................................................7
Digital Output....................................................................................7
S
ERIAL PORT CONNECTIONS...................................................................7
P
OWER SUPPLY CONNECTIONS ...............................................................9
CHAPTER 3: COMMANDS ................................................................11
S
YNTAX................................................................................................12
R
EADING A/D CHANNELS COMMAND...................................................13
R
EADING DIGITAL I/O COMMAND ........................................................14
S
ET DIGITAL OUTPUT COMMAND .........................................................14
CHAPTER 4: A/D..................................................................................15
S
AMPLING RATE ...................................................................................15
A/D C
ONVERTER RANGE......................................................................15
Non-buffered 0 to 5VDC A/D Inputs................................................15
Buffered 0 to 5V A/D Inputs.............................................................15
0 to 10VDC A/D Input......................................................................16
4-20mA Current Loop A/D Input .....................................................16
CHAPTER 5: SOFTWARE..................................................................19
A
PPLICATION PROGRAM INTERFACE.....................................................19
B232OPSDA_ReadAnalog...............................................................19
B232OPSDA_ReadDigital...............................................................20
B232OPSDA_SetDigitalOutput .......................................................21
deinitComPort..................................................................................21
initComPort......................................................................................21
L
OW-LEVEL COMMUNICATIONS............................................................22
Read A/D Command ........................................................................23
Read Digital I/O Command .............................................................24
Set Digital Output State ...................................................................26