Connect hsajet printer

Now, we have a hsajet printer system for control and printing barcode. So i want to write a new application to control it.
I have find document to program but it not foud.
I want everyone help me.
And this is my document of hsajet that i find it on website. I dont know it is correct or not correct.
"hsausa.com/Downloads/Manuals/HSAJET_CU_REMOTE_PROTOCOL_2011_03_01.pdf"
Please help me.