ADLINK Technology PCI-7251 - Page 6

ii Table of Contents
2.7 PCI-7250 and PCI-7251 Connection ................................. 17
3 Registers............................................................................ 19
3.1 PCI PnP Registers ............................................................. 19
3.2 I/O Address Map ................................................................ 20
3.3 Relay Output and Readback Registers.............................. 20
3.4 Isolation Input Registers .................................................... 21
4 Operation Theory .............................................................. 23
4.1 Using Relay Output............................................................ 23
4.2 Using Isolated Input ........................................................... 25
5 C/C++ Libraries ................................................................. 27
5.1 Libraries Installation ........................................................... 27
5.2 Programming Guide........................................................... 27
Naming Convention ...................................................... 27
Data Types ................................................................... 28
5.3 Running Testing Utility (7250UTIL.EXE)............................ 28
5.4 725X Initialization............................................................... 30
@ Description ............................................................... 30
@ Syntax ...................................................................... 30
@ Arguments ................................................................ 30
@ Return Code ............................................................. 31
5.5 _7250_DI, _7252_DI.......................................................... 32
@ Description ............................................................... 32
@ Syntax ...................................................................... 32
@ Arguments ................................................................ 32
@ Return Code ............................................................. 33
5.6 _7250_DO, _7252_DO ...................................................... 34
@ Description ............................................................... 34
@ Syntax ...................................................................... 34
@ Arguments ................................................................ 34
@ Return Code ............................................................. 35
5.7 _7250_DO_Read_Back, _7252_DO_ReadRelay.............. 35
@ Description ............................................................... 35
@ Syntax ...................................................................... 35
@ Arguments ................................................................ 35
@ Return Code ............................................................. 36
5.8 _7251_Check_Exist ........................................................... 37
@ Description ............................................................... 37