Omron CS CJ1W-ETN21 - Manual (Page 192)

168
FINS/UDP Method Section 7-3
Sample Program
1 #include <errno.h>
2 #include <stdio.h>
3 #include <sys/types.h>
4 #include <sys/socket.h>
5 #include <netinet/in.h>
6 #include <signal.h>
7
8 #define FINS_UDP_PORT 9600
9 #define SERV_IP_ADDR "196.36.32.100" /* Ethernet Unit IP ADDRESS*/
10 #define MAX_MSG 2010
11 #define RESP_TIMEOUT 2
12
13
14 /*
15 * FINS/UDP COMMUNICATIONS SAMPLE PROGRAM
16 */
17 main(argc,argv)
18 int argc;
19 char *argv[];
20 {
21 int sockfd;
22 struct sockaddr_in ws_addr, cs_addr;
23 char fins_cmnd[MAX_MSG], fins_resp[MAX_MSG];
24 int sendlen, recvlen, addrlen;
25 char sid = 0;
26 extern recv_fail();
27
28 /* GENERATE UDP SOCKET*/
29 if ((sockfd = socket(AF_INET,SOCK_DGRAM,0)) < 0)
30 err_exit("can't open datagram socket");
31