Chapter 2 Using Your 653X
653X User Manual 2-16 ni.com

Figure 2-7. Programming Handshaking Output in LabVIEW/LabVIEW RT

By default, for output buffered transfers the 6534 device will preload the on board memory with data before starting the output operation. This is done to eliminate or reduce the impact of the PCI bus bandwidth limitations and increase the overall transfer rate.
DIO Start VI
DIO Parameter VI
DIO Clear VI
Buffered
Operation? DIO Config VI
Yes
Burst
Mode?
No
No
No
Reverse
PCLK
Direction?
Yes
Yes
Finite
Buffer?
DIO Wait VI
Yes
Done?
DIO Write VI
Yes
No
No
DIO Write VI
Digital Single
Write VI
No
Reverse
PCLK
Direction?
Yes DIO Parameter VI
Digital Group
Config VI
Resets the lines
to default states.
Digital Group
Config VI