Hello Ganesh,
You can not get tcodes related to a particular module from the system at one place. Also there will be several overlaps. Means a tcode can be relevant to more than one module. You can compile such list as under.
Run SE16 > Give value TSTC in field Table Name and Press Enter > Now in the Selection screen Give IW* in the field Transaction Code and Execute. All the list of tcodes that start with IW is in front of you. You export this to Excel sheet like below:
In the same manner, repeat the above process for IE*, IL*, IK*, IR*, etc, etc. Compile all the information into one file. (You can identify and remove tcodes not belong to PM module).
The above process gives you exhaustive list of tcodes you want to have.
Good luck
KJogeswaraRao