s7comm Directory Reference

Files
	s7comm.cpp
	Siemens S7comm PDU builder + parser (pure, host-tested; constants per Wireshark).
	s7comm.h
	Siemens S7comm PDU codec (PC_ENABLE_S7COMM) - zero-heap builder + parser for the S7-300/400 communication PDUs, carried inside a COTP Data TPDU (services/fieldbus/cotp) over ISO-on-TCP (port 102).