2016-05-23 178 views
1

根据这howToModbusSlave我试图建立自己的modbus奴隶与寄存器选定的值(后来我想填充这些值与监测设备使用python/jython的数据),并发送他们使用Predix(云平台)。由于我是modbus新手,我仍然无法找到如何将我选择的值添加到我的注册持有人的方法。Modbus TCP从站线程 - 设置并获取寄存器值

这里是我的奴隶线程我用它来为localhost上主提供的数据:502:

public class SimpleApp { 

public static void main(String args[]) { 
try { 

//1. The important instances and variables 
ModbusTCPListener listener = null; 
SimpleProcessImage spi = null; 
int port = 502; 


//2. Prepare a process image 
spi = new SimpleProcessImage(); 

//I dont understand this part, why do i need it? 
spi.addDigitalOut(new SimpleDigitalOut(true)); 
spi.addDigitalOut(new SimpleDigitalOut(false)); 
spi.addDigitalIn(new SimpleDigitalIn(false)); 
spi.addDigitalIn(new SimpleDigitalIn(true)); 
spi.addDigitalIn(new SimpleDigitalIn(false)); 
spi.addDigitalIn(new SimpleDigitalIn(true)); 

//setting up register holders, gonna ask no 10,11,20 and 21 as set in the data node config 
for (int i = 0; i < 25; i++) { 
    int value = 15; 
    SimpleInputRegister sr = new SimpleInputRegister(value); 
     spi.addRegister(sr); 
    } 

    //3. Set the image on the coupler 
    ModbusCoupler.getReference().setProcessImage(spi); 
    ModbusCoupler.getReference().setMaster(false); 
    ModbusCoupler.getReference().setUnitID(15); //15 

    //4. Create a listener with 3 threads in pool 
    listener = new ModbusTCPListener(1); //no of threads 
    listener.setPort(port); 
    listener.start(); 

} catch (Exception ex) { 
    ex.printStackTrace(); 
    } 
} 
} 

数据节点的配置:

<channel protocol="TCP_IP" tcpIpAddress="127.0.0.1" tcpIpPort="502"> 
     <unit id="1"> 
      <register name="Node-1-1" dataType="INTEGER" address="10" registerType="HOLDING" description="temperature"/> 
      <register name="Node-1-2" dataType="DECIMAL" address="11" registerType="HOLDING" description="pressure"/> 
     </unit> 
     <unit id="2"> 
      <register name="Node-2-1" dataType="INTEGER" address="20" registerType="HOLDING" description="temperature"/> 
      <register name="Node-2-2" dataType="INTEGER" address="21" registerType="HOLDING" description="pressure"/> 
     </unit> 
    </channel> 

我得到论文转让( “输出” ):

[{"address":"com.ge.dspmicro.machineadapter.modbus://127.0.0.1:502/2/20","datatype":"INTEGER","name":"Node-2-1","category":"REAL","value":655370,"timestamp":1464006550991,"quality":"NOT_SUPPORTED (20000000) "}, 
{"address":"com.ge.dspmicro.machineadapter.modbus://127.0.0.1:502/1/10","datatype":"INTEGER","name":"Node-1-1","category":"REAL","value":655370,"timestamp":1464006550992,"quality":"NOT_SUPPORTED (20000000) "}] 

主要问题:

1)其中是来自节点1-2和2-2(输出中缺少)的数据?

2)如何编辑从寄存器发送的值? (为什么我得到的 “价值”:655370)

可选Qustions:(东西我没有在documentation理解)

3)什么是类simpleDigitalOut /在立场?

4)ModbusCoupler.getReference().setUnitID(value)代表什么? (它显然不需要做与数据节点的unitID共同的任何事情

5)SimpleInputRegister和SimpleRegister类有什么区别?

+0

这个问题已经有一段时间了,你最终是找到了一个解决方案,还是试图在Java Modbus Library开发人员论坛上提问? – j12y

回答

-1

这是部分答案:

1)您需要的节点在​​3210文件

2添加到dataSubscriptionConfig标签下方),在这里你要设置的值:int value = 15; - 你需要实现一种发送动态值的方式