- modbus Serial(RTU,ASCII) Client
- modbus TCP Client
- modbus TCP Server
- object pool design,reduce memory allocation
- fast encode and decode
- interface design
- simple API and support raw data api
Use go get.
go get github.com/thinkgos/mbThen import the modbus package into your own code.
import modbus "github.com/thinkgos/mb"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
// mb simple example
func main() {
p := modbus.NewRTUClientProvider(modbus.WithEnableLogger(),
modbus.WithSerialConfig(serial.Config{
Address: "/dev/ttyUSB0",
BaudRate: 115200,
DataBits: 8,
StopBits: 1,
Parity: "N",
Timeout: modbus.SerialDefaultTimeout,
}))
client := mb.NewClient(p, mb.WitchHandler(&handler{}))
err := client.Start()
if err != nil {
panic(err)
}
err = client.AddGatherJob(mb.Request{
SlaveID: 1,
FuncCode: modbus.FuncCodeReadHoldingRegisters,
Address: 0,
Quantity: 300,
ScanRate: time.Second,
})
if err != nil {
panic(err)
}
select {}
}
type handler struct {
mb.NopProc
}
func (handler) ProcResult(_ error, result *mb.Result) {
log.Printf("Tx=%d,Err=%d,SlaveID=%d,FC=%d,Address=%d,Quantity=%d,SR=%dms",
result.TxCnt, result.ErrCnt, result.SlaveID, result.FuncCode,
result.Address, result.Quantity, result.ScanRate/time.Millisecond)
}