High-performance, non-blocking, zero-buffer-copying Modbus for Java.
Quick Start
ModbusTcpMasterConfig config = new ModbusTcpMasterConfig.Builder("localhost").build();
ModbusTcpMaster master = new ModbusTcpMaster(config);
master.connect();
CompletableFuture<ReadHoldingRegistersResponse> future =
master.sendRequest(new ReadHoldingRegistersRequest(0, 10), 0);
future.thenAccept(response -> {
System.out.println("Response: " + ByteBufUtil.hexDump(response.getRegisters()));
ReferenceCountUtil.release(response);
});See the examples project for more.
Maven
Modbus Master
<dependency>
<groupId>com.digitalpetri.modbus</groupId>
<artifactId>modbus-master-tcp</artifactId>
<version>1.2.0</version>
</dependency>Modbus Slave
<dependency>
<groupId>com.digitalpetri.modbus</groupId>
<artifactId>modbus-slave-tcp</artifactId>
<version>1.2.0</version>
</dependency>Supported Function Codes
| Code | Function |
|---|---|
| 0x01 | Read Coils |
| 0x02 | Read Discrete Inputs |
| 0x03 | Read Holding Registers |
| 0x04 | Read Input Registers |
| 0x05 | Write Single Coil |
| 0x06 | Write Single Register |
| 0x0F | Write Multiple Coils |
| 0x10 | Write Multiple Registers |
| 0x16 | Mask Write Register |
| 0x17 | Read/Write Multiple Registers |
Get Help
See the examples project or contact kevinherron@gmail.com for more information.
License
Apache License, Version 2.0