Read Binary Data from Keysight DMM

I am trying to read voltage measurements from a Keysight 34465A digital multimeter. When the data format is set to ASCII I can read data no problem. However, when the data type is set to Binary (REAL), i get a format error using binblockread. How can I read binary data from a Keysight DMM?

Format error detected during binblockread.
binblock data must be in the format:
#[N][D][A], where
 '#' is the token marking the start of the binblock.
 'N' specifies the number of digits in D that follow.
 'D' specifies the number of data bytes in A that follow.
 A is the data

My code follows

 
clear;
close all;

%% Inputs

dataType = 'REAL';

%% Connect

%An easy way to get the address is with the free Keysight Connection Expert
%software
DMMAddr = "USB0::0x2A8D::0x0101::MY57501917::0::INSTR";


try

    resources = visadevlist
    app.DMM.DMM = visadev(DMMAddr);
    disp('Successful Connection')

catch ME

    disp('Unsuccessful Connection')
    
    clear app.DMM.DMM

end

%% Read

if ~isempty(app.DMM.DMM)

    try

        app.DMM.errorlist = {};

        writeline(app.DMM.DMM, '*IDN?');
        name = readline(app.DMM.DMM);

        %set the format
        writeline(app.DMM.DMM, ['FORM:DATA ' dataType]);
        app = app_readerror_DMM(app);
        writeline(app.DMM.DMM, 'FORM:DATA?')
        format_data = readline(app.DMM.DMM);
        writeline(app.DMM.DMM, ['FORM:BORD NORM']);
        app = app_readerror_DMM(app);
        writeline(app.DMM.DMM, 'FORM:BORD?')
        format_bord = readline(app.DMM.DMM);

        if strcmp(dataType,'REAL')  || strcmp(dataType,'SWAP')
            data_num = [];
            writeline(app.DMM.DMM, "MEAS:VOLT:DC?");
                data_temp = readbinblock(app.DMM.DMM)';
                %data_char = readline(app.DMM.DMM);
                %convert data from bytes to single floats
                data_channel = swapbytes(typecast(uint8(data_temp),'single'));
                data_num = [data_num, data_channel];
        elseif strcmp(dataType,'ASCII')
            writeline(app.DMM.DMM, "MEAS:VOLT:DC?");
            data_temp = readline(app.DMM.DMM);
        else
            error('Data type not recognize.')
        end

    catch ME

        disp('Programming Error')
        disp(ME.message)
        
        clear app.DMM.DMM

    end

end

%% Disconnect


clear app.DMM.DMM
disp('DMM Connection Closed')


%%

function app = app_readerror_DMM(app)

%errors are stored in the power analyzer buffer and read out one at a time,
%most recent first.  Therefore, it is good practice to read the errors
%after each command.

response = writeread(app.DMM.DMM, 'SYST:ERR?');

idx = length(app.DMM.errorlist) + 1;
app.DMM.errorlist{idx,1} = response;

end