Analyze Schneider Industrial PLC program and make a list of outgoing Modbus-TCP messages

We have the working program (code) for an old Schneider Industrial PLC (Modicon Momentum), that we are not able to visualize correctly.
This PLC controls a room's environmental conditions and communicates with a central server to report any alarms.
The PLC program is suppossed to be opened/programmed in Schneider's IEC Programming Software called "Concept" which has been discontinued.

Scope for the current Project is to:
* open, understand the programm
* analyze the module that governs the MODBUS-TCP communication between the node(room) and the central server
* make a list of ALL outgoing communication messages programmatically sent by the PLC to the central server via Modbus-TCP, showing the detailed description of the message structure

A fully working project file (*.prj) would be provided for the analysis
No programming or testing is required: only a file description of the outgoing comm messages.