Contents APCI-3xxx
(standard)
5
7.3
Connection examples....................................................33
7.3.1
Analog inputs ......................................................................33
7.3.2
Analog outputs (only APCI-3110 and APCI-3116) ................33
7.3.3
Digital inputs (24 V) ..............................................................34
7.3.4
Digital outputs (24 V)............................................................34
8
FUNCTIONS OF THE BOARD ................................35
8.1
Block diagram................................................................35
8.2
Analog inputs .................................................................35
8.2.1
Overview..............................................................................35
8.2.2
Voltage ranges....................................................................36
8.2.3
Analog input switch (differential inputs)................................36
8.2.4
Input modes of the analog inputs .......................................38
1) Simple mode ........................................................................38
2) Scan
modes ..........................................................................38
3) Sequence modes (with DMA).............................................. 40
4) Auto
refresh
mode................................................................ 43
8.3
Analog outputs ...............................................................43
8.4
Digital inputs ..................................................................44
8.5
Digital outputs................................................................45
8.6
TTL inputs and outputs ....................................................46
8.7
Watchdog.......................................................................46
8.8
Timer...............................................................................47
8.9
Counter ..........................................................................47
Upwards counter .................................................................48
Downwards counter.............................................................48
8.10
Setting a digital output ..................................................49
9
STANDARDSOFTWARE .........................................50
9.1
Software functions..........................................................50
9.2
Software samples...........................................................63
10
APPENDIX ..........................................................67
10.1
Glossary .........................................................................67
10.2
Index ..............................................................................71