- modbus TCP Client
- modbus Serial(RTU,ASCII) Client
- modbus TCP Server
- 临时对象缓冲池,减少内存分配
- 快速编码,解码
- interface设计,提供扩展性
- 简单的丰富的API
大量参考了!为了用于生产环境goburrow
Bit access:
- Read Discrete Inputs
- Read Coils
- Write Single Coil
- Write Multiple Coils
16-bit access:
- Read Input Registers
- Read Holding Registers
- Write Single Register
- Write Multiple Registers
- Read/Write Multiple Registers
- Mask Write Register
- Read FIFO Queue
p := modbus.NewTCPClientProvider("192.168.199.188:502")
client := modbus.NewClient(p)
client.LogMode(true)
err := client.Connect()
if err != nil {
fmt.Println("connect failed, ", err)
return
}
defer client.Close()
fmt.Println("starting")
for {
_, err := client.ReadCoils(1, 0, 10)
if err != nil {
fmt.Println(err.Error())
} else {
fmt.Printf("ReadCoils % x", results)
}
time.Sleep(time.Second * 5)
} // modbus RTU/ASCII Client
p := modbus.NewRTUClientProvider("")
p.Address = "COM5"
p.BaudRate = 115200
p.DataBits = 8
p.Parity = "N"
p.StopBits = 1
client := modbus.NewClient(p)
client.LogMode(true)
err := client.Connect()
if err != nil {
fmt.Println("connect failed, ", err)
return
}
defer client.Close()
fmt.Println("starting")
for {
results, err := client.ReadCoils(1, 0, 10)
if err != nil {
fmt.Println(err.Error())
} else {
fmt.Printf("ReadDiscreteInputs %#v\r\n", results)
}
time.Sleep(time.Second * 5)
} // modbus TCP Server
srv := modbus.NewTCPServer(":502")
srv.Logger = log.New(os.Stdout, "modbus", log.Ltime)
srv.LogMode(true)
srv.AddNode(modbus.NewNodeRegister(
1,
0, 10, []byte{0xfa, 0xa0},
0, 10, []byte{0xa5, 0x0a},
0, []uint16{0x1234, 0x4567, 0x1234, 0x4567, 0x1234, 0x4567, 0x4567, 0x1234, 0x4567, 0x1234},
0, []uint16{0x4567, 0x1234, 0x4567, 0x1234, 0x4567, 0x1234, 0x4567, 0x1234, 0x4567, 0x1234},
))
err := srv.ListenAndServe(":502")
if err != nil {
panic(err)
}