Sinchronize analog output and analog input channels and queues

Hi, all!

A need to sinchronize analog output and analog input channels and queues on National Instruments PCI-6229 board. The properties of board is:

daq.getDevices

ans = 

ni: National Instruments PCI-6229 (Device ID: 'Dev2')
   Analog input subsystem supports:
      4 ranges supported
      Rates from 0.1 to 250000.0 scans/sec
      32 channels ('ai0' - 'ai31')
      'Voltage' measurement type

     Analog output subsystem supports:
        -10 to +10 Volts range
        Rates from 0.1 to 833333.3 scans/sec
        4 channels ('ao0','ao1','ao2','ao3')
        'Voltage' measurement type

     Digital subsystem supports:
        Rates from 0.1 to 1000000.0 scans/sec
        48 channels ('port0/line0' - 'port2/line7')
        'InputOnly','OutputOnly','Bidirectional' measurement types

     Counter input subsystem supports:
        Rates from 0.1 to 80000000.0 scans/sec
        2 channels ('ctr0','ctr1')
        'EdgeCount','PulseWidth','Frequency','Position' measurement types

     Counter output subsystem supports:
        Rates from 0.1 to 80000000.0 scans/sec
        2 channels ('ctr0','ctr1')
        'PulseGeneration' measurement type

Properties, Methods, Events

I need to set AO and get AI synchronously and simultaneously with the speed of 250000.0 scans/sec in two parallel threads (queues). How can I do it?

[Sergey Makovkin]

How can I make a synchronization between two sessions? AO and AI. I have a code:

aoSession = daq.createSession('ni');
aoSession.addAnalogOutputChannel('dev2', 0:1, 'Voltage');
rate = 250000;
aoSession.Rate = rate;

aiSession = daq.createSession('ni');
aiSession.addAnalogInputChannel('dev2', 'ai0', 'Voltage');
aiSession.Rate = 250000;

Xmin = -5;
Xmax = 5;
Ymin = -5;
Ymax = 5;
Xresolution = 256;
Yresolution = 256;
XX = 0;
YY = 0;

TimeCalculatingArray = 0;
tic
for iX = Xmin : (Xmax - Xmin)/(Xresolution-1) : Xmax
    for iY = Ymin : (Ymax - Ymin)/(Yresolution-1) : Ymax
        XX = [XX, iX];
        YY = [YY, iY];
    end
end
outputData(:,1) = XX;
outputData(:,2) = YY;
TimeCalculatingArray = toc

TimeQueue = 0;
tic
for i = 0:1:100
    queueOutputData(aoSession, outputData);
end
TimeQueue = toc

TimeScaning = 0;
tic
startForeground(aoSession);
%%%%Here I what to start a synchronizide with AO session of Analog Input like that:
startForeground(aiSession);
%%%%
TimeScaning = toc

Answer 1

[Emmanuel Aboagye]

Hi guys!

I want to input and output analog signals using set velocity of +10V and -10V from an NI card to a servo drive? This +10V and -10V will be used to control the speed of an AC motor with an NI card. Please help me guys!