National Instruments 653X - Manual (Page 31)

Chapter 2 Using Your 653X
© National Instruments Corporation 2-13 653X User Manual
Figure 2-4. Programming Buffered Handshaking I/O in NI-DAQ
Read? DIG_Grp_Mode
DIG_Grp_Config
Read?
Continuous?
No
DIG_DB_Config
Yes
DIG_Block_In
DIG_Block_Out
DIG_Block_In
DIG_Block_Out
Yes
No
Yes
No
Yes
DIG_DB_HalfReady
Is the
next half buffer
ready?
DIG_DB_Transfer
Acquisition
Complete?
Yes
No
No
DIG_Block_Clear
Yes
DIG_Block_Check
No Acquisition
Complete?