Mitsubishi Electric NZ2GF-ETB, User Manual

Page: 89 / 254

87
CHAPTER 7 COMMUNICATION OF THE ETHERNET ADAPTER MODULE
7
7.
1 SLM
P
Com
m
unicat
ion
and Cyc
lic
T
ransm
ission
void Sockerror(int error_kind) // Error handling function
{
if (error_kind == ERROR_INITIAL){
printf("Initial processing is abnormal.");
}
else{
nErrorStatus = WSAGetLastError();
switch(error_kind){
case
ERROR_SOCKET:
printf("Failed to create the socket.");
break;
case ERROR_BIND:
printf("Failed to bind.");
break;
case ERROR_CONNECT:
printf("Failed to establish the connection.");
break;
case ERROR_SEND:
printf("Failed to send.");
break;
case ERROR_RECIEVE:
printf("Failed to receive.");
break;
case
ERROR_SHUTDOWN:
printf("Failed to shut it down.");
break;
case ERROR_CLOSE:
printf("Failed to properly close it.");
break;
}
}
printf("Error code is %d.\n", nErrorStatus);
if (Closeflag == FLAG_ON){
nErrorStatus = shutdown(socketno, 2); // Shutdown processing
nErrorStatus = closesocket(socketno); // Close processing
Closeflag = FLAG_OFF; // Connection end flag off
}
printf("Exiting the program. Press any key.\n");
Dmykeyin = getchar(); // Waiting for key input
WSACleanup(); // Winsock DLL freed
return;
}