In C file define a array with has 9 chars:
#pragma DATA_SECTION (PM21,".const:PM21")
const char PM21[]= {1,0x32,0x31,3,0x41,0x44,0x30,0x32,4};
in Link file:
PM21_SEC : origin = 0x27AD, length = 0x0009
.const:PM21 > PM21_SEC
but aways has error: program will not fit into