Modbuspal從站和Jamod作爲TCP主站

我使用Modbuspal模擬器作爲從站，Jamod tcp主站代碼作爲主站。以下是我的Jamod TCP主代碼從寄存器中讀取數據：Modbuspal從站和Jamod作爲TCP主站

import java.net.InetAddress; 
import net.wimpi.modbus.io.ModbusTCPTransaction; 
import net.wimpi.modbus.msg.ReadInputDiscretesRequest; 
import net.wimpi.modbus.msg.ReadInputDiscretesResponse; 
import net.wimpi.modbus.net.TCPMasterConnection; 

public class SlaveTest { 

Logger LOG = LoggerFactory.getLogger(SlaveTest.class); 

TCPMasterConnection connection; 
ModbusTCPTransaction transaction = null; //the transaction 
ReadInputDiscretesRequest request = null; //the request 
ReadInputDiscretesResponse response = null; //the response 


public void test() { 

    connection = null; //the connection    
    InetAddress addr = null; //the slave's address 
    int port = 502; 
    int ref = 1, count = 1; 

    try { 
     addr = InetAddress.getByName("127.0.0.1"); 
     connection = new TCPMasterConnection(addr); 
     connection.setPort(port); 
     connection.connect(); 
     request = new ReadInputDiscretesRequest(ref, count); 
     transaction = new ModbusTCPTransaction(connection); 
     transaction.setRequest(request); 
     transaction.execute(); 
     response = (ReadInputDiscretesResponse) transaction.getResponse(); 
     System.out.println("Digital Inputs Status=" + response.getDiscretes().toString()); 
     connection.close(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
}

Modbuspal奴隸：

當我執行我的代碼，建立連接，但我得到了以下錯誤：

net.wimpi.modbus.ModbusIOException: Executing transaction failed (tried 3 times) 
at   net.wimpi.modbus.io.ModbusTCPTransaction.execute(ModbusTCPTransaction.java:197) 
at modbus.slave.SlaveTest.test(SlaveTest.java:49) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at org.apache.camel.component.bean.MethodInfo.invoke(MethodInfo.java:408) 
at org.apache.camel.component.bean.MethodInfo$1.doProceed(MethodInfo.java:279) 
at org.apache.camel.component.bean.MethodInfo$1.proceed(MethodInfo.java:252) 
at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:177) 
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109) 
at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:68) 
at org.apache.camel.component.bean.BeanProducer.process(BeanProducer.java:38) 
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141) 
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77) 
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460) 
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190) 
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190) 
at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:165) 
at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:73) 
at java.util.TimerThread.mainLoop(Timer.java:555) 
at java.util.TimerThread.run(Timer.java:505)

錯誤是行「transaction.execute（）;」處的觸發器。請幫忙。

在此先感謝。

來源

2016-04-05 user2782405

您需要爲主人提供單位ID。所以，請嘗試以下操作：

request = new ReadInputDiscretesRequest(ref, count); 
request.setUnitID(ID)

和ID是你的奴隸單元ID，應該是一些

來源

2016-04-14 22:51:37

謝謝。有效。 – user2782405

是ID是masterID還是slaveID？我認爲它是一個奴隸ID。你能幫我理解嗎？ – user2782405

Modbuspal從站和Jamod作爲TCP主站

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