#include "stdafx.h"
using namespace std;
void main()
{
	USHORT   nAdsState;	//包含PLC的状态信息
	USHORT        nDeviceState;
	long  nErr, nPort;
	AmsAddr       Addr;
	PAmsAddr   pAddr = &Addr;

	//建立端口通讯
	nPort = AdsPortOpen();
	nErr = AdsGetLocalAddress(pAddr);
	if (nErr) cerr << "Error: AdsGetLocalAddress: " << nErr << '\n';

	pAddr->port = 851;

	do
	{
		//向PLC读取PLC的状态信息
		nErr = AdsSyncReadStateReq(pAddr, &nAdsState, &nDeviceState);
		if (nErr)
			cerr << "Error: AdsSyncReadStateReq: " << nErr << '\n';
		else
		{
			cout << "PLCState: " << nAdsState << '\n'; // 输出PLC状态信息
		}
		cout.flush();
	} while (getchar() == '\n'); // 在“回车”时实现循环读取

	//关闭通讯端口
	nErr = AdsPortClose();
	if (nErr) cerr << "Error: AdsPortClose: " << nErr << '\n';
}