Its perfectly OK to just use 16 MOVes.
I'm not sure if you are asking how to set up an array or just commenting on the need to do it. Just in case:
You set up an array in the new tag definition dialog box. Click on the elipses (...) button next to the DataType to open the "Select Data Type" dialog. In the Data type field type cou, the auto complete should complete the field as COUNTER. At the bottom of the window is an array dimensions field. Set DIM0 to 16 and click OK. You will be returned to the new tag dialog to finish naming and describing your array. Notice that in the Data Type field there data type now says COUNTER[16]. The brackets [ ] tell you its an array and the number between the brackets tell you how many elements are in the array. You can think of an array as being analogous to the files in SLCs, MLx, and PLC/5 processors, ie, T4, C5, N7 were essentially arrays.