Mitsubishi Electric NZ2GF-ETB, User Manual

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CHAPTER 7 COMMUNICATION OF THE ETHERNET ADAPTER MODULE
7
7.
1 SLM
P
Com
m
unicat
ion
and Cyc
lic
T
ransm
ission
(2) Creating a program
A program example is shown in this section. Programs should be executed from an external device.
●
In the program example shown in this section, the minimum processing is described. When including any other
processing such as error handling, add the corresponding program to it.
● If the Ethernet adapter module is powered off and then on, data written from the external device to the Ethernet adapter
module using SLMP will be cleared. Therefore, create a program of communicating data while handshaking with the
master station.
(a) Programming environment
Development environment: Microsoft

Visual C++

2005
Library that requires a link: ws2_32.lib
(b) Configuration of the Ethernet adapter module
(c) Program example
Item Setting
IP address 192.168.3.30
Subnet mask 255.255.255.0
Port No.
2000
H
//EthernetAD_test.cpp: Defines the entry point of the console application.
//
#include "stdafx.h"
/***********************************************************************************************/
/**
**/
/** Sample program (program name: EthernetAD_test.cpp) **/
/** **/
/** This is a sample program for testing a connection between **/
/** the Ethernet adapter module and the external device. **/
/** This program reads RY0000 to RY001F of the Ethernet adapter module **/
/** and writes data to RWr0000 and RWr0001. **/
/** **/
/** Copyright(C) 2010 Mitsubishi Electric Corporation **/
/** All Rights Reserved **/
/** **/
/***********************************************************************************************/
#include <winsock2.h>
#define FLAG_OFF 0 // End flag OFF
#define FLAG_ON 1 // End flag ON
#define SOCK_OK 0 // Normal end
#define SOCK_NG -1 // Abnormal end
#define BUF_SIZE 4096 // Receive buffer size
#define ERROR_INITIAL 0 // Initial error
#define ERROR_SOCKET 1 // Socket creation error
#define ERROR_BIND 2 // Bind error
#define ERROR_CONNECT 3 // Connect error
#define ERROR_SEND 4 // Send error
#define ERROR_RECIEVE 5 // Receive error
#define ERROR_SHUTDOWN 6 // Shutdown error
#define ERROR_CLOSE 7 // Line close error