Process-Informatik S7-LAN Benutzerhandbuch Seite 89

sS7LANAdr.sin_family = AF_INET;
sS7LANAdr.sin_port = htons(133); // Port 133; Statistic Service
sS7LANAdr.sin_addr.S_un.S_un_b.s_b1 = 192; // IP-Adresse des S7LAN's
sS7LANAdr.sin_addr.S_un.S_un_b.s_b2 = 168;
sS7LANAdr.sin_addr.S_un.S_un_b.s_b3 = 1;
sS7LANAdr.sin_addr.S_un.S_un_b.s_b4 = 56;
if (connect(sS7LAN, (struct sockaddr *)&sS7LANAdr,
sizeof(sS7LANAdr)) != SOCKET_ERROR) {
// etwas senden => daraufhin ende S7LAN antwort
send(sS7LAN, (const char *) "A", 1, 0);
// Daten vom S7LAN empfangen
if (recv(sS7LAN, (char *)&sInfo, sizeof(sInfo), 0)) {
printf("Parity: %s Spikes: %s\nParity: %3d Spikes:
3d\n",&sInfo.ucASCIIParity[0],&sInfo.ucASCIISpikes[0],
(unsigned int) sInfo.ucBINParity,(unsigned int)
sInfo.ucBINSpikes );
} else {
printf("Empfang vom S7LAN gestört\n");
}
sLinger.l_linger = 0;
sLinger.l_onoff = 1; // unmittelbar schlieîen
shutdown(sS7LAN,2); // Read and Write
setsockopt(sS7LAN, SOL_SOCKET, SO_LINGER, (char
*)&sLinger, sizeof(sLinger));
closesocket(sS7LAN);
} else {
printf("S7LAN nicht ereichbar\n");
}
} else {
printf("Socket nicht öffenbar\n");
}
return 0;
}
Seite 89 von 202 Handbuch S7-LAN