how to get Current Tag ID in zpl command? I get current TagID.my command is including Printing and return tag id to host computer

Question

^XA ^RFR,H,2,12,1 ^FN1^FS ^HV1,,Tag ID : ^FS ^XZ

this is my zpl command.It is printing and return tag id to host computer. I just want only return tag id to host computer. I don't want to print. I want only to read tag id. Please Sample Code for this.

I tried command . but i can't explain this.please solved code for this problem.