- National Instrument DAQ 653X High-Speed Digital I/O Devices for PCI, PXI , CompactPCI, AT, EISA, and PCMCIA Bus Systems 653X

Chapter 2 Using Your 653X
653X User Manual 2-14 ni.com
Figure 2-5. Programming Unbuffered Handshaking I/O in NI-DAQ
DIG_Grp_Config
Input?
DIG_Grp_Mode
DIG_Grp_Status
Ready?
DIG_In_Grp
DIO_Grp_Config
Done?
DIG_Out_Grp
DIG_Grp_Status
Ready?
Done?
DIG_In_Grp
DIO_Grp_Config
*
No
Ye s
No
Ye s
No
Ye s
Ye s
No
Ye s
No
*Clear Configuration