National Instruments 653X - Manual (Page 23)

Chapter 2 Using Your 653X
© National Instruments Corporation 2-5 653X User Manual
Figure 2-1. Programming Unstrobed I/O in NI-DAQ
s
Figure 2-2. Programming Unstrobed I/O in LabVIEW/LabVIEW RT
Programming the Control/Timing Lines as Extra
Unstrobed Data Lines
If you want to use the control/timing lines as extra unstrobed data lines:
• NI-DAQ C Interface—If both sets of control/timing lines are available,
call the
DIG_In_Prt or DIG_Out_Prt function and set Port Number
to 4. If both sets of control/timing lines are not available, use the
DIG_In_Line and DIG_Out_Line functions to individually
read/write to the appropriate control/timing lines.
No Yes
Only One
Line?
DIG_Line_Config DIG_Prt_Config
DIG_Out_prt DIG_In_prt
Read?
Done?
No Yes
DIG_Out_Line DIG_In_Line
Done?
Read?
No
No
Yes
No
Read from
Digital Line VI
Single Line?
Yes No
Write to
Digital Port VI
Read from
Digital Port VI
Write to
Digital Line VI