From 620d904921c76b6b29d1b69787da7a82121d4c31 Mon Sep 17 00:00:00 2001
From: zhangqian <zhangqian@123.com>
Date: 星期四, 26 十月 2023 21:15:35 +0800
Subject: [PATCH] 读写plc支持modbusRTU
---
service/plc.go | 99 ++++++++++++-------
test/plc_test.go | 2
model/common/common.go | 8 +
pkg/plc/apacheplc4x/modbus.go | 4
go.mod | 2
pkg/plc/apacheplc4x/modbusrtu.go | 85 +++++++++++++++++
pkg/plc/modbusx/modbusrtu.go | 72 ++++++++++++++
7 files changed, 232 insertions(+), 40 deletions(-)
diff --git a/go.mod b/go.mod
index f87ef64..24c5e68 100644
--- a/go.mod
+++ b/go.mod
@@ -16,7 +16,6 @@
github.com/gofrs/uuid v4.4.0+incompatible
github.com/gogo/protobuf v1.3.2
github.com/gorilla/websocket v1.5.0
- github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4
github.com/jinzhu/gorm v1.9.16
github.com/mitchellh/mapstructure v1.5.0
github.com/mojocn/base64Captcha v1.3.1
@@ -66,6 +65,7 @@
github.com/gopacket/gopacket v1.1.1 // indirect
github.com/hashicorp/hcl v1.0.0 // indirect
github.com/icza/bitio v1.1.0 // indirect
+ github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4 // indirect
github.com/jinzhu/inflection v1.0.0 // indirect
github.com/jinzhu/now v1.1.5 // indirect
github.com/josharian/intern v1.0.0 // indirect
diff --git a/model/common/common.go b/model/common/common.go
index 3a8781f..d616014 100644
--- a/model/common/common.go
+++ b/model/common/common.go
@@ -157,3 +157,11 @@
DataType PullDataType `json:"dataType"` //瑕佹媺鍙栫殑鏁版嵁绫诲瀷
Data interface{} //杩斿洖鐨勬暟鎹�
}
+
+type RTUConfig struct {
+ BaudRate int `json:"baudRate"` //涓插彛娉㈢壒鐜囷紝 method = serial鏃� 鐢�
+ SerialName string `json:"serialName"` //涓插彛鍚嶇О锛宮ethod = serial鏃� 鐢�
+ DataBit int `gorm:"type:int(11)" json:"dataBit"` //鏁版嵁浣嶏紝method = modbusRTU 鐢�
+ StopBit int `gorm:"type:int(11)" json:"stopBit"` //鍋滄浣嶏紝method = modbusRTU 鐢�
+ Parity constvar.Parity `gorm:"type:int(11)" json:"parity"` //鏍￠獙鏂瑰紡锛宮ethod = modbusRTU 鐢�
+}
diff --git a/pkg/plc/apacheplc4x/modbus.go b/pkg/plc/apacheplc4x/modbus.go
index 3876010..dd3621f 100644
--- a/pkg/plc/apacheplc4x/modbus.go
+++ b/pkg/plc/apacheplc4x/modbus.go
@@ -19,7 +19,7 @@
// 鍒涘缓涓�涓笂涓嬫枃锛屽苟璁剧疆 3 绉掕秴鏃�
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
- conn, err := newGetModbusConnection(ctx, ipAddr)
+ conn, err := newModbusConnection(ctx, ipAddr)
if err != nil {
logx.Errorf("new modbus connection err: %v", err.Error())
return nil, err
@@ -27,7 +27,7 @@
return conn, nil
}
-func newGetModbusConnection(ctx context.Context, ipAddr string) (plc4go.PlcConnection, error) {
+func newModbusConnection(ctx context.Context, ipAddr string) (plc4go.PlcConnection, error) {
// 鍒涘缓椹卞姩绠＄悊鍣�
driverManager := plc4go.NewPlcDriverManager()
// 娉ㄥ唽TCP浼犺緭
diff --git a/pkg/plc/apacheplc4x/modbusrtu.go b/pkg/plc/apacheplc4x/modbusrtu.go
new file mode 100644
index 0000000..8c50ff5
--- /dev/null
+++ b/pkg/plc/apacheplc4x/modbusrtu.go
@@ -0,0 +1,85 @@
+package apacheplc4x
+
+import (
+ "apsClient/model/common"
+ "apsClient/pkg/logx"
+ "context"
+ "errors"
+ "fmt"
+ plc4go "github.com/apache/plc4x/plc4go/pkg/api"
+ apiModel "github.com/apache/plc4x/plc4go/pkg/api/model"
+ "github.com/spf13/cast"
+ "time"
+)
+
+func newModbusRTUConnection(c *common.RTUConfig) (plc4go.PlcConnection, error) {
+ ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+ // 鍒涘缓涓�涓柊鐨� PLC 杩炴帴
+ driverManager := plc4go.NewPlcDriverManager()
+ connectionString := fmt.Sprintf("modbus-rtu:serial://%s?baudrate=%d&databits=%d&stopbits=%d&parity=%s", c.SerialName, c.BaudRate, c.DataBit, c.StopBit, c.Parity)
+ connectionRequestChanel := driverManager.GetConnection(connectionString)
+ // 绛夊緟杩炴帴鍝嶅簲锛屽悓鏃惰�冭檻涓婁笅鏂囩殑瓒呮椂
+ select {
+ case connectionResult := <-connectionRequestChanel:
+ cancel()
+ if err := connectionResult.GetErr(); err != nil {
+ return nil, err
+ }
+ return connectionResult.GetConnection(), nil
+ case <-ctx.Done():
+ cancel()
+ return nil, errors.New("connect plc by modbusRTU timeout")
+ }
+}
+
+func ReadHoldingRegisterByRTU(c *common.RTUConfig, address, length int) ([]byte, error) {
+ connection, err := newModbusRTUConnection(c)
+ if err != nil {
+ return nil, err
+ }
+ defer connection.Close()
+ if length > 1 {
+ return readHoldingRegisterList(connection, address, length)
+ }
+
+ return readHoldingRegisterSingle(connection, address)
+}
+
+func WriteHoldingRegisterByRTU(c *common.RTUConfig, address int, value any) (string, error) {
+ connection, err := newModbusRTUConnection(c)
+ if err != nil {
+ return "", err
+ }
+ defer connection.Close()
+ tag := fmt.Sprintf("tag:%v:w", address)
+ var tagAddress string
+ if cast.ToInt32(value) > 2<<16 {
+ tagAddress = getTagAddress(address, 2)
+ } else {
+ tagAddress = getTagAddress(address, 1)
+ }
+
+ // 鍐欐ā寮�
+ writeRequest, err := connection.WriteRequestBuilder().AddTagAddress(tag, tagAddress, value).Build()
+ if err != nil {
+ logx.Errorf("plc4x preparing read-request:%s\n", err.Error())
+ return "", err
+ }
+
+ // 鎵ц
+ writeResult := <-writeRequest.Execute()
+ if err := writeResult.GetErr(); err != nil {
+ logx.Errorf("plc4x execute write-request:%s\n", err.Error())
+ return "", err
+ }
+
+ // 鍒ゆ柇鍝嶅簲鐮佹槸鍚︽纭�
+ if writeResult.GetResponse().GetResponseCode(tag) != apiModel.PlcResponseCode_OK {
+ logx.Errorf("plc4x response error code: %s", writeResult.GetResponse().GetResponseCode(tag).GetName())
+ return "", errors.New("error code: " + writeResult.GetResponse().GetResponseCode(tag).GetName())
+ }
+
+ result := writeResult.GetResponse().String()
+
+ return result, nil
+}
diff --git a/pkg/plc/modbusx/modbusrtu.go b/pkg/plc/modbusx/modbusrtu.go
new file mode 100644
index 0000000..46348cf
--- /dev/null
+++ b/pkg/plc/modbusx/modbusrtu.go
@@ -0,0 +1,72 @@
+package modbusx
+
+import (
+ "apsClient/constvar"
+ "apsClient/model/common"
+ "github.com/goburrow/modbus"
+ "time"
+)
+
+func ReadByRTU(c *common.RTUConfig, address uint16, quantity uint16) (data []byte, err error) {
+ address--
+ cli, err := getModbusRTUConnection(c)
+ if err != nil {
+ return nil, err
+ }
+ data, err = cli.ReadHoldingRegisters(address, quantity)
+ if err != nil {
+ cli, err = getModbusRTUConnection(c)
+ if err != nil {
+ return nil, err
+ }
+ data, err = cli.ReadHoldingRegisters(address, quantity)
+ }
+ return
+}
+
+func WriteByRTU(c *common.RTUConfig, address uint16, value int) (err error) {
+ address--
+ var bytesVal []byte
+ bytesVal = intToBytes(value)
+
+ cli, err := getModbusRTUConnection(c)
+ if err != nil {
+ return err
+ }
+ _, err = cli.WriteMultipleRegisters(address, uint16(len(bytesVal)), bytesVal)
+ if err != nil {
+ cli, err = getModbusRTUConnection(c)
+ if err != nil {
+ return err
+ }
+ _, err = cli.WriteMultipleRegisters(address, uint16(len(bytesVal)), bytesVal)
+ }
+ return err
+}
+
+func getModbusRTUConnection(c *common.RTUConfig) (cli modbus.Client, err error) {
+ // Modbus RTU/ASCII
+ h := modbus.NewRTUClientHandler(c.SerialName)
+ h.BaudRate = c.BaudRate
+ h.DataBits = c.DataBit
+ switch c.Parity {
+ case constvar.ParityEven:
+ h.Parity = "E"
+ case constvar.ParityOdd:
+ h.Parity = "O"
+ case constvar.ParityNull:
+ h.Parity = "N"
+ }
+
+ h.StopBits = c.StopBit
+ h.SlaveId = 1
+ h.Timeout = 5 * time.Second
+
+ err = h.Connect()
+ if err != nil {
+ return nil, err
+ }
+ defer h.Close()
+ cli = modbus.NewClient(h)
+ return
+}
diff --git a/service/plc.go b/service/plc.go
index 183cb00..68258b8 100644
--- a/service/plc.go
+++ b/service/plc.go
@@ -4,6 +4,7 @@
"apsClient/conf"
"apsClient/constvar"
"apsClient/model"
+ "apsClient/model/common"
"apsClient/pkg/logx"
"apsClient/pkg/plc"
"apsClient/pkg/plc/apacheplc4x"
@@ -19,7 +20,6 @@
func PlcWrite(plcConfig *model.DevicePlc, fieldType constvar.PlcStartAddressType, channel int32, value interface{}) (err error) {
var (
startAddress int
- ipAddr string
)
if plcConfig.CurrentTryTimes > plcConfig.MaxTryTimes {
@@ -32,26 +32,7 @@
startAddress = pc.StartAddress
}
}
-
- if plcConfig.Method == constvar.PlcMethodModbusTCP {
- ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
- err = WriteHoldingRegister(ipAddr, startAddress, value)
-
- if err != nil {
- logx.Errorf("plc write failed, address: %v, value: %v, err: %v", startAddress, value, err.Error())
- plcConfig.CurrentErr = err
- return PlcWrite(plcConfig, fieldType, channel, value)
- }
- logx.Infof("plc write ok, address: %v, value: %v", startAddress, value)
- } else if plcConfig.Method == constvar.PlcMethodSerial {
- ipAddr = conf.Conf.Services.Serial
- if ipAddr == "" {
- return errors.New("conf.Conf.Services.Serial config not set yet")
- }
- label := fmt.Sprintf("D%d", startAddress)
- return plccom.WritePLC(plccom.DeviceTypeMitsubishi, ipAddr, label, cast.ToInt(value))
- }
- return
+ return PlcWriteDirect(plcConfig, startAddress, value)
}
func PlcWriteDirect(plcConfig *model.DevicePlc, address int, value interface{}) (err error) {
@@ -61,7 +42,16 @@
defer dealErr(err)
if plcConfig.Method == constvar.PlcMethodModbusTCP {
ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
- err = WriteHoldingRegister(ipAddr, address, value)
+ err = WriteByModbusTCP(ipAddr, address, value)
+
+ if err != nil {
+ logx.Errorf("plc write failed, address: %v, value: %v, err: %v", address, value, err.Error())
+ return err
+ }
+ logx.Infof("plc write ok, address: %v, value: %v", address, value)
+ } else if plcConfig.Method == constvar.PlcMethodModbusRTU {
+ ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
+ err = WriteByModbusRTU(plcConfig, address, value)
if err != nil {
logx.Errorf("plc write failed, address: %v, value: %v, err: %v", address, value, err.Error())
@@ -84,12 +74,21 @@
ipAddr string
)
defer dealErr(err)
- if plcConfig.Method == constvar.PlcMethodModbusTCP {
- ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
- value, err := ReadHoldingRegister(ipAddr, address, dataLength)
- if err != nil {
- return nil, err
+ if plcConfig.Method == constvar.PlcMethodModbusTCP || plcConfig.Method == constvar.PlcMethodModbusRTU {
+ var value []byte
+ if plcConfig.Method == constvar.PlcMethodModbusTCP {
+ ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
+ value, err = ReadByModbusTCP(ipAddr, address, dataLength)
+ if err != nil {
+ return nil, err
+ }
+ } else {
+ value, err = ReadByModbusRTU(plcConfig, address, dataLength)
+ if err != nil {
+ return nil, err
+ }
}
+
switch valueType {
case constvar.PlcStartAddressValueTypeString:
return string(value), nil
@@ -118,7 +117,7 @@
return
}
-func ReadHoldingRegister(ipAddr string, address, length int) ([]byte, error) {
+func ReadByModbusTCP(ipAddr string, address, length int) ([]byte, error) {
if conf.Conf.PLC.Package == constvar.PlcPackageApache {
newLength := length / 2
if newLength == 0 {
@@ -140,7 +139,7 @@
}
}
-func WriteHoldingRegister(ipAddr string, address int, value any) (err error) {
+func WriteByModbusTCP(ipAddr string, address int, value any) (err error) {
if conf.Conf.PLC.Package == constvar.PlcPackageApache {
_, err = apacheplc4x.WriteHoldingRegister(ipAddr, address, value)
return err
@@ -156,15 +155,43 @@
}
}
+func ReadByModbusRTU(plcConfig *model.DevicePlc, address, length int) ([]byte, error) {
+ rtuConfig := &common.RTUConfig{
+ BaudRate: plcConfig.BaudRate,
+ SerialName: plcConfig.SerialName,
+ DataBit: plcConfig.DataBit,
+ StopBit: plcConfig.StopBit,
+ Parity: plcConfig.Parity,
+ }
+ if conf.Conf.PLC.Package == constvar.PlcPackageApache {
+ newLength := length / 2
+ if newLength == 0 {
+ newLength = 1
+ }
+ return apacheplc4x.ReadHoldingRegisterByRTU(rtuConfig, address, newLength)
+ } else {
+ return modbusx.ReadByRTU(rtuConfig, uint16(address), uint16(length))
+ }
+}
+
+func WriteByModbusRTU(plcConfig *model.DevicePlc, address int, value any) (err error) {
+ rtuConfig := &common.RTUConfig{
+ BaudRate: plcConfig.BaudRate,
+ SerialName: plcConfig.SerialName,
+ DataBit: plcConfig.DataBit,
+ StopBit: plcConfig.StopBit,
+ Parity: plcConfig.Parity,
+ }
+ if conf.Conf.PLC.Package == constvar.PlcPackageApache {
+ _, err = apacheplc4x.WriteHoldingRegisterByRTU(rtuConfig, address, value)
+ return err
+ } else {
+ return modbusx.WriteByRTU(rtuConfig, uint16(address), cast.ToInt(value))
+ }
+}
+
func PlcIsConnect() bool {
return IsConnect()
- //if conf.Conf.PLC.Package == constvar.PlcPackageApache {
- // return apacheplc4x.IsConnect()
- //} else if conf.Conf.PLC.Package == constvar.PlcPackageApacheLongConnection {
- // return false
- //} else {
- // return modbusx.IsConnect()
- //}
}
func dealErr(err error) {
diff --git a/test/plc_test.go b/test/plc_test.go
index 92ea393..d0e2475 100644
--- a/test/plc_test.go
+++ b/test/plc_test.go
@@ -17,7 +17,7 @@
log.Fatal(err)
}
var readValue int
- raw, err := service.ReadHoldingRegister(ipPort, address, 1)
+ raw, err := service.ReadByModbusTCP(ipPort, address, 1)
if err != nil {
log.Fatal(err)
}
--
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