C#与欧姆龙PLC实现CIP通讯
参考文档：
欧姆龙PLC使用-CSDN博客
CIP通讯介绍（欧姆龙PLC）-CSDN博客
使用NuGet添加引用：CIPCompolet
基础参考我的CIP协议介绍，默认TCP端口为：44818
类NXCompolet
类的功能可以在安装PLC开发软件后帮助文档中查看，对应路径：C:\ProgramData\Omron\CX-Compolet\StartMenu\CX-Compolet\SYSMAC Compolet help
功能及其示例代码点击后查看
# MachineAutomationControllerCompolet继承CIPPlcCompolet，CIPPlcCompolet的
# 变量
public const long TIMEOUT_INFINITE = 4294967295L;
string RoutePath
ConnectionType ConnectionType
bool Active
long ReceiveTimeLimit
string TypeName
int HeartBeatTimer
CIPDevice Device
bool UseRoutePath
string PeerAddress
int LocalPort
bool IsConnected
string[] VariableNames
# 函数
byte[] ExecuteCIPService(byte serviceCode, int classId, int instanceId, int attributeId, byte[] requestData, long requestDataSize)
byte[] ExecuteCIPService(byte serviceCode, int classId, long instanceId, int attributeId, byte[] requestData, long requestDataSize)
byte[] ExecuteCIPService(byte serviceCode, string variableName, byte[] requestData, long requestDataSize)
void Update()
void AboutBox()
VariableInfo GetVariableInfo(string variableName)
# NXCompolet继承MachineAutomationControllerCompolet的
# 变量
string UnitName
short RunStatus
Encoding PlcEncoding
string[] VariableNames // 可以通过这个公共变量获取到有哪些可读的参数名
string[] SystemVariableNames
DateTime Clock
bool DontFragment
# 函数
MachineAutomationControllerCompolet(IContainer container)
object ReadVariable(string variableName)
Hashtable ReadVariableMultiple(string[] variableNames)
void WriteVariable(string variableName, object writeData)
byte[] ReadRawData(string variableName)
Hashtable ReadRawDataMultiple(string[] variableNames)
void WriteRawData(string variableName, byte[] writeData)
VariableInfo GetVariableInfo(string variableName) // 获取变量信息，是否为结构体、数组、对应变量类型
EventLogItemCollection GetEventLogs(EventCategory category)
# NXCompolet自己定义的
RunModeTypes RunMode
// 数据类型
public enum VariableType
{
TIMER = 1,
COUNTER = 2,
CHANNEL = 3,
UINT_BCD = 4,
UDINT_BCD = 5,
ULINT_BCD = 6,
ENUM = 7,
DATE_NSEC = 8,
TIME_NSEC = 9,
DATE_AND_TIME_NSEC = 10,
TIME_OF_DAY_NSEC = 11,
UNION = 12,
BOOL = 193,
SINT = 194,
INT = 195,
DINT = 196,
LINT = 197,
USINT = 198,
UINT = 199,
UDINT = 200,
ULINT = 201,
REAL = 202,
LREAL = 203,
STRING = 208,
BYTE = 209,
WORD = 210,
DWORD = 211,
LWORD = 212,
ASTRUCT = 160,
STRUCT = 162,
ARRAY = 163
}
ExecuteCIPService函数功能描述
# CIPPlc Compolet Class Library
byte[] requestData = new byte[2];
requestData[0] = 1;
requestData[1] = 0;
data = CIPPlcCompolet1.ExecuteCIPService(0x4C, "Variable1", requestData, 2);
运行环境启动配置
安装欧姆龙PLC开发软件安装工具：CX-Compolet_SGW_Ver1.72在Network Browser》Control Panel》Network Configuration》EtherNet/IP Hardware》Communications Adapter》如果使用网管更改ip地址
启动网关。点击Start如果有对应Open状态就可以，负责勾选上下面的Extend the Ethernet ports后再Start
PLC上配置IP地址（连接成功后更改IP地址）
更改后连接的IP地址设置（如果这里不更改一致，无法实现在线测试更改）
上方工具栏》控制器》通信设置》远程IP地址
PLC添加可被外部读取的全局变量
上位机代码实现
依赖项，Nuget中搜索CIPCompolet添加：
using OMRON.Compolet.CIP;
internal class MyCIP
{
NXCompolet nXCompolet; // 欧姆龙的CIP通讯
Mutex mutex = new Mutex(); // 进程间互斥锁
public MyCIP() {
Conncet("192.168.50.1"); // 192.168.50.1; 127.0.0.1
}
public void Conncet(string ip)
{
Task.Run(() =>
{
nXCompolet = new NXCompolet(new Container());
nXCompolet.PeerAddress = ip;
while (true)
{
mutex.WaitOne();
Console.WriteLine("RunStatus: " + nXCompolet.RunStatus + "; PeerAddress:" + nXCompolet.PeerAddress);
Console.WriteLine("port: " + nXCompolet.LocalPort);
//Console.WriteLine("UnitName: " + nXCompolet.UnitName + ",DontFragment: " + nXCompolet.DontFragment);
nXCompolet.Active = true;
if (!nXCompolet.IsConnected)
{
nXCompolet.Active = false;
Console.WriteLine("PLC连接错误");
Thread.Sleep(1000);
continue;
}
Console.WriteLine("PLC连接成功");
//nXCompolet.RunMode = NXCompolet.RunModeTypes.Program;
object obj = nXCompolet.ReadVariable("gbHMI_CloseDoor");
Console.WriteLine(obj.ToString());
mutex.ReleaseMutex();
Thread.Sleep(1000);
}
});
}
}
运行结果
RunStatus: 1; PeerAddress:192.168.50.1 port: 2 PLC连接成功 True
抓取报文
安装wireshark抓取
使用欧姆龙附带的调试工具
更改IP后勾选上Active进入连接状态