nping in nmap suite can simulate sending packet on Windows platform.
this is an example of sending s7comm "Write Var" packet:
nping --dest-mac 00:50:56:32:5f:82 --source-mac 00:0c:29:29:15:30 --tcp -p 102 --dest-ip 10.2.0.10 -c 1 --data-length 37 --data 0300002502f080320100009378000e00060501120a1001000100018400001a000300010100
ps. on win7 platform, we should select "Install older Npcap 1.31 driver", maybe npcap 1.50 doesn't work in acquiring net card interface thereby.
refer to:
https://nmap.org/download.html