Reading ASCII values from serial COM port

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Hi all I tried reading ASCII values from barcode scanner(through serial port) into ML using the following program
delete(instrfind)
s = serial('COM5');
fopen(s)
[tline1,count1,msg1] = fgetl(s)
fclose(s)
but its not working
Can you help me in resolving the issue.
I know that the barcode code scanner communicates using ASCII.

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