messung nexgen 2k plc

hi!
I am new to plc programing and i am trying to program a messung nexgen 2k plc with codesys.Pls tell me how to put retentive counters in this plc? What should be the word addresses for retentive memory in this case?
Thank you!

Input/Output addressing is octal e.g
Inputs %IX0.0 to %IX0.7
%IX1.0 to %IX1.7 and so on
Outputs %QX0.0 to %QX0.7
%QX1.0 to %QX1.7 and so on
Marker Bit %MX0.0 to %MX0.7
%MX1.0 to %MX1.7 and so on