PC-414A ETC, PC-414A Datasheet - Page 13

• Manufacturer Part Number: PC-414A
• Description: Last Time Buy Notice Board Products
• Manufacturer: ETC

DATEL, Inc., Mansfield, MA 02048 (USA)
All VI’s are assembled graphically using a mouse and can be
edited at any time to modify functionality or appearance. Non-
stop, seamless data acquisition continues on the PC-414
while LabVIEW simultaneously maintains the GUI and
handles the A/D data stream in real time. Easily customized,
interactive user interfaces can be created from the vast library
of front panel controls and displays offered by LabVIEW.
The PC-414LV includes extensive Dynamic Linked Library
(DLL) functions that perform the PC-414 low level hardware
control and monitor operations transparently. The software
provides VI functions that poll PC-414 status flags
independent of, and simultaneous with, data acquisition and
data transfer. Control is retained by the user as long as
LabVIEW continues to execute correctly. The multi-window,
visual programming environment facilitates building and
accessing hierarchical VI programs. Multi-tasking allows
context switches to other concurrent Windows applications
without disrupting PC-414 operation or control.
The PC-414/LabVIEW system optimizes two concurrent
processes - the PC-414 acquiring data while LabVIEW further
processes or stores the uploaded data stream. The entire
PC-414/LabVIEW combination uses only a few VI functions
that are easy to understand and incorporate into a “block
diagram” program. The basic concept is to initialize the
PC-414 hardware, reset the FIFO memory, start data
acquisition, and upload blocks of data from the FIFO to
LabVIEW memory buffers on the host - or to remote receivers
over the DT Connect I compatible output port. These data
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Figure 7. PC-414LV Visual Program
89
blocks can then be further processed as screen displays,
indicators, graphs, sent to printers or plotters, or simply
archived to disk file for later analysis. The A/D continues
running and no data will be lost as long as LabVIEW uploads
the A/D data faster than the data is being acquired.
Virtual Instrument Library
In summary, PC-414LV includes the following VI functions:
PC-414 Initialize
Operating Mode
Clear FIFO
Start/Stop A/D
Read Status
Read FIFO
Write DAC
Inport/Outport
PC-414 Demo
Demultiplex Buffers
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Initialize the PC-414 hardware - board
model, I/O base address, etc.
Specify A/D trigger rate, A/D sample
rate, and analog input channel.
Reset the FIFO memory
Enable and disable the A/D.
Read hardware status flags - FIFO
flags, acquisition done, oversampling.
Read blocks of A/D data from the
FIFO on the PC-414 and fill a
LabVIEW buffer on the host.
Update the analog output channel.
Read/write the 8-bit digital I/O port.
Complete data acquisition
demonstration VI, includes real time
signal display.
Unravel a multi-channel data buffer
and extract data from one channel
only.
Internet: www.datel.com
PC-414