send command to serial port with ASCII code

I need to send command from PC to device, the ASCII code is:

SOH C L M STX S D ETB EOT CR

The corresponding hexadecimal numbers are:

01H 43H 4CH 4DH 02H 52H 44H 17H 04H 0DH

The sample code given in the manual was written in BASICS (I assume the sample code sends to port 1):

SD$=CHR$(1)+"CLM"+CHR$(2)+"SD"+CHR$(23)+CHR$(4)

PRINT #1, SD$

The following is the code I wrote in MATLAB, but it didn't work:

fprintf(device,'%cCLM%cSD%c%c',[1,2,23,4])

Can someone please help with this? Thank you!

[Geoff Hayes]

Ella - should you be using strings instead?

fprintf(device,'%sCLM%sSD%s%s','1','2','23','4')