# easymodbus4j
**Repository Path**: dev_gitee/easymodbus4j
## Basic Information
- **Project Name**: easymodbus4j
- **Description**: easymodbus4j 是一个高性能和易用的 Modbus 协议的 Java 实现，基于 Netty 开发，可用于 Modbus 4 的客户端和服务器开发
- **Primary Language**: Java
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 74
- **Created**: 2023-08-21
- **Last Updated**: 2023-08-21
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# easymodbus4j [chs]
easymodbus4j是一个高性能和易用的 Modbus 协议的 Java 实现，基于 Netty 开发，可用于 Modbus协议的Java客户端和服务器开发.
# easymodbus4j [en]
A high-performance and ease-of-use implementation of the Modbus protocol written in Java netty support for modbus 8 mode client/server and master/slave.
### easymodbus4j features 特点:
- 1、Netty NIO high performance高性能.
- 2、Modbus Function sync/aync 同步/异步非阻塞。
- 3、Modbus IoT Data Connector Supports工业物联网平台IoT支持。
- 4、支持Modbus TCP\Modbus RTU protocol两种通信协议.
- 5、灵活架构,支持8种生产部署模式,自由组合,满足不同生产要求.
- 6、通用组件包,支持高度自定义接口.
- 7、完全支持Modbus TCP 4种部署模式: TCP服务器master,TCP客户端slave,TCP服务器slave,TCP客户端master。
- 8、完全支持Modbus RTU 4种部署模式: RTU服务器master,RTU客户端slave,RTU服务器slave,RTU客户端master。
- 9、友好的调试以及日志支持bit\bitset\byte\short\int\float\double。
- 10、Supports Function Codes:
* Read Coils (FC1)
* Read Discrete Inputs (FC2)
* Read Holding Registers (FC3)
* Read Input Registers (FC4)
* Write Single Coil (FC5)
* Write Single Register (FC6)
* Write Multiple Coils (FC15)
* Write Multiple Registers (FC16)
* Read/Write Multiple Registers (FC23)
### repositories
- Project Example Code : https://github.com/zengfr/easymodbus4j
- Mvnrepository Repositories: [Repositories Central Sonatype Mvnrepository easymodbus4j](https://mvnrepository.com/artifact/com.github.zengfr/easymodbus4j)
```
artifactId/jar:
easymodbus4j-core.jar Modbus protocol协议
easymodbus4j-codec.jar Modbus 通用编码器解码器
easymodbus4j.jar Modbus General/Common公共通用包
easymodbus4j-client.jar Modbus client客户端
easymodbus4j-server.jar Modbus server服务器端
easymodbus4j-extension.jar Modbus extension扩展包 ModbusMasterResponseProcessor/ModbusSlaveRequestProcessor interface
```
### quick Start快速开发:
#### 第一步step1 ,import jar:
- 1.1 maven:
```
com.github.zengfr
easymodbus4j-client
0.0.5
com.github.zengfr
easymodbus4j-server
0.0.5
com.github.zengfr
easymodbus4j-extension
0.0.5
```
#### 第二步step2,implement handler:
- 2.1 if master
* 实现implement ResponseHandler接口
see easymodbus4j-example:ModbusMasterResponseHandler.java
* or 实现implement ModbusMasterResponseProcessor 接口 use new ModbusMasterResponseHandler(responseProcessor);
- 2.2 if slave
* 实现implement RequestHandler接口
see easymodbus4j-example:ModbusSlaveRequestHandler.java
* or 实现implement ModbusSlaveRequestProcessor 接口 use new ModbusSlaveRequestHandler(reqProcessor);
#### 第三步step3,
- 3.1 select one master/slave and client/server mode:
```java
modbusServer = ModbusServerTcpFactory.getInstance().createServer4Master(port, responseHandler);
modbusClient = ModbusClientTcpFactory.getInstance().createClient4Slave(host,port, requestHandler);
modbusClient = ModbusClientTcpFactory.getInstance().createClient4Master(host, port, responseHandler);
modbusServer = ModbusServerTcpFactory.getInstance().createServer4Slave(port, requestHandler);
modbusServer = ModbusServerRtuFactory.getInstance().createServer4Master(port, responseHandler);
modbusClient = ModbusClientRtuFactory.getInstance().createClient4Slave(host,port, requestHandler);
modbusClient = ModbusClientRtuFactory.getInstance().createClient4Master(host, port, responseHandler);
modbusServer = ModbusServerRtuFactory.getInstance().createServer4Slave(port, requestHandler);
```
#### 第四步step4 ,FAQs and advanced extensions:
- 4.1 how to send a request ? to send data
```java
Thread.sleep(3*1000);// sleep 3s before,when client or server open connection is async;
Channel channel = client.getChannel());
Channel channel = server.getChannelsBy(...));
ChannelSender sender = ChannelSenderFactory.getInstance().get(channel);
ChannelSender sender2 = new ChannelSender(channel,unitId,protocolIdentifier);
sender.readCoils(...)
sender.readDiscreteInputs(...)
sender.writeSingleRegister(...)
```
- 4.2 how to process request/response? to receive data
see code in processResponseFrame mothod in ModbusMasterResponseHandler.java or ModbusMasterResponseProcessor.java
```java
public void processResponseFrame(Channel channel, int unitId, AbstractFunction reqFunc, ModbusFunction respFunc) {
if (respFunc instanceof ReadCoilsResponse) {
ReadCoilsResponse resp = (ReadCoilsResponse) respFunc;
ReadCoilsRequest req = (ReadCoilsRequest) reqFunc;
//process business logic for req/resp
}
};
```
- 4.3 how to get response to byteArray for custom decode by yourself?
see code in processResponseFrame mothod in ModbusMasterResponseHandler.java or ModbusMasterResponseProcessor.java
```java
public void processResponseFrame(Channel channel, int unitId, AbstractFunction reqFunc, ModbusFunction respFunc) {
if (respFunc instanceof ReadDiscreteInputsResponse) {
ReadDiscreteInputsResponse resp = (ReadDiscreteInputsResponse) respFunc;
byte[] resutArray = resp.getInputStatus().toByteArray();
}
};
```
- 4.4 how to show log?
see ModbusMasterResponseHandler.java in example project.
```java
ModbusFrameUtil.showFrameLog(logger, channel, frame);
```
- 4.5 how to custom a client/server advance by yourself?
```java
ModbusChannelInitializer modbusChannelInitializer=...;
ModbusServerTcpFactory.getInstance().createServer4Master(port,modbusChannelInitializer);
```
#### Example Project Code
- example1
[example1](https://github.com/zengfr/easymodbus4j/tree/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example)
- example3
[example3](https://github.com/zengfr/easymodbus4j/tree/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example3)
- other example1
[other example1](https://gitee.com/zengfr/easymodbus4j/tree/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example)
- other example3
[other example3](https://gitee.com/zengfr/easymodbus4j/tree/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example3)
- client4Master demo:[client4Master demo](
https://gitee.com/zengfr/easymodbus4j/blob/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example3/Example3.java) [最佳简单快速参考实例][Best simple quick demo]
- server4Master demo:[server4Master demo](
https://gitee.com/zengfr/easymodbus4j/blob/master/easymodbus4j-example/src/main/java/com/github/zengfr/easymodbus4j/example3/Example4.java)[最佳简单快速参考实例][Best simple quick demo]
#### Example run startup:
- 1、unzip file easymodbus4j-example-0.0.5-release.zip.
- 2、for modbus master mode:open autosend.txt file in dir or autosend.txt rsourcefile in easymodbus4j-example-0.0.5.jar
- 3、for modbus master mode:edit autosend.txt file
- 4、start startup.bat.
- 5、you also can edit *.bat for modbus master/salve mode: .
#### Example实例说明:
- 1、解压缩zip文件到文件夹
- 2、java程序 运行不了 则安装jdk8.
- 3、解压后8个bat文件 对应TCP/RTU 服务器master,客户端slave,服务器slave,客户端master 8种模式.
- 4、Master模式 可以设置autosend.txt文件，定时发送读写请求。
- 5、记事本打开bat文件可以编辑相关参数，如定时延时发送时间以及详细日志开关。
#### 开发实例系列教程Develop a series of tutorial examples
[easymodbus4j 开发实例系列教程之1----客户端master模式](https://my.oschina.net/zengfr/blog/4304442)
[easymodbus4j 开发实例系列教程之2----服务端master模式](https://my.oschina.net/zengfr/blog/4305723)
#### capture demo 运行效果图截屏:
#### capture demo 运行效果图截屏2:
