(Archived)modbus write in pure go, support rtu,ascii,tcp master library,also support tcp slave.(WIP new implement<old: https://github.com/thinkgos/gomodbus >)
License: MIT License
Code:
package main
import (
"fmt"
"github.com/goburrow/serial"
modbus "github.com/things-go/go-modbus"
)
func main() {
p := modbus.NewRTUClientProvider(modbus.WithEnableLogger(),
modbus.WithSerialConfig(serial.Config{
Address: "\\\\.\\com31",
BaudRate: 38400,
DataBits: 8,
StopBits: 1,
Parity: "N",
Timeout: modbus.SerialDefaultTimeout,
}))
client := modbus.NewClient(p)
err := client.Connect()
if err != nil {
fmt.Println("connect failed, ", err)
return
}
_, err = client.ReadInputRegisters(0x16, 69, 13)
if err != nil {
fmt.Println(err.Error())
}
fmt.Println("Close err:", client.Close())
_, err = client.ReadInputRegisters(0x16, 69, 13)
if err != nil {
fmt.Println(err.Error())
}
}
Out:
modbusRTUMaster => 2022/11/21 12:42:20 [D]: sending [16 04 00 45 00 0d 23 3d]
modbusRTUMaster => 2022/11/21 12:42:20 [D]: received [16 04 1a 00 00 00 00 00 01 00 00 80 00 00 03 83 c9 7c e8 20 22 11 15 00 00 80 01 00 05 ea 2d]
Close err: <nil>
modbusRTUMaster => 2022/11/21 12:42:20 [D]: sending [16 04 00 45 00 0d 23 3d]
modbusRTUMaster => 2022/11/21 12:42:20 [D]: received [16 04 1a 00 00 00 00 00 01 00 00 80 00 00 03 83 c9 7c e8 20 22 11 15 00 00 80 01 00 05 ea 2d]
After the client.Close() the port remains open and continues to work
你好，目前测试一种情境:
使用一个client同时读取slave1,2，当其中一个slave被禁用(diabled)后，
会因为读取不到而重新连线，但连线数不断上升。
...
p :=gomodbus.NewTCPClientProvider("127.0.0.1:1502")
for {
time.Sleep(1 * time.Second)
fmt.Println("p.IsConnected()", p.IsConnected()) // is true
client.ReadHoldingRegisters(1, 1, 1)
client.ReadHoldingRegisters(2, 1, 1) // i/o timeout
...
}
使用模拟器ModRSsim2可以观察到连线数不断新增，这边针对timeout的处理是否正常?
RT，配置只看到RTS的相关参数，如果需要设置DTR该如何操作？
Hi, found a bug:
rtuclient.go
156: should be: functionFail := aduRequest[1] | 0x80
i need that
RT，配置只看到RTS的相关参数，如果需要设置DTR该如何操作？
Window10系统
串口号COM1~COM9测试连接正常
COM10以上连接串口则会报错，错误信息如：The system cannot find the path specified.
对于采集到的切片数据进行转换和缩放处理，例如[]byte转换为数据类型int8/16/32/64，uint8/16/32/64，float32/64等（包括多字节数据的大小端处理，高低位转换）；以及进行1倍，10倍，0.5倍，-10倍缩放数据。有什么比较好的措施吗？
我自己写了一部分转换，白天发出来请您指点。
你好，请问IsConnected()是否会因为连上后对方断线而为false?
p := gomodbus.NewTCPClientProvider("127.0.0.1:1502", gomodbus.WithAutoReconnect(0), gomodbus.WithEnableLogger())
连线上之后对方断线
tcp 127.0.0.1:60127->127.0.0.1:1502: wsasend: An established connection was aborted by the software in your host machine.
自身的IsConnected()仍为true
_, err := client.ReadCoils(1, 0, 10)
if err != nil {
fmt.Println(err.Error())
} else {
fmt.Printf("ReadCoils % x", results)
}
should be
results, err = ...
AND
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},
))
should be
modbus.NewNodeRegister(
1,
0, 10, 0, 10,
0, 10, 0, 10),
Of coz, This is a great project ! I like it !
您好，请问现在功能上是否还有缺失，例如寄存器的读取返回类型目前只支持整形，您有打算继续扩展其他的类型吗？
发挥TCP client 双向特性，和modbus tcp支持，需要将modbus client写成异步支持？？
modbusTCPMaster =>2021/07/18 00:47:40 [D]: sending [00 15 00 00 00 06 01 03 00 00 00 08]
modbusTCPMaster =>2021/07/18 00:47:40 [D]: received [00 14 00 00 00 13 01 03 10 00 23 09 4e 00 0d 00 0e 00 0f 00 10 00 00 00 00]
modbus: response transaction id '20' does not match request '21'
请问这个是什么原因造成的？
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