#!/usr/bin/env python
import sys
if sys.version_info[0] < 3: #The Module "Tkinter" is named "tkinter" in Python 3.
from Tkinter import *
import tkMessageBox as messagebox #We import tkMessageBos as messagebox, because thats the name in Python 3
else:
from tkinter import *
from builtins import int
from future.moves import tkinter
import tkinter.messagebox as messagebox
from easymodbus.modbusClient import *
class EasyModbusGUI(Frame):
def __init__(self, master=None):
Frame.__init__(self)
master.title("EasyModbusPython Client")
self.pack()
self.createWidgets()
def createWidgets(self):
self.pack(fill=BOTH, expand=True)
self.columnconfigure(1, weight=1)
self.columnconfigure(3, pad=7)
self.rowconfigure(3, weight=1)
self.rowconfigure(5, pad=7)
#label Read operations
readOperationsLabel = Label(self, text="Read Operations", font = 15)
readOperationsLabel.config(font=15)
readOperationsLabel.grid(row = 0, column = 0)
#Button Read Coils
self.readCoils = Button(self, text="Read Coils (FC1)", width=25, command=self.__ReadCoils)
self.readCoils.grid(row = 4, column = 0, padx = 20, pady = 6, columnspan=2)
#Button Read Discrete Inputs
self.readDiscreteInputs = Button(self, text="Read Discrete Inputs (FC2)", width=25, command=self.__ReadDiscreteInputs)
self.readDiscreteInputs.grid(row = 5, column = 0, padx = 20, pady = 6, columnspan=2)
#Button Read Holding Registers
self.readHoldingRegisters = Button(self, text="Read Holding Registers (FC3)", width=25, command=self.__ReadHoldingRegisters)
self.readHoldingRegisters.grid(row = 6, column = 0, padx = 20, pady = 6, columnspan=2)
#Button Read Input Registers
self.readInputRegisters = Button(self, text="Read Input Registers (FC4)", width=25, command=self.__ReadInputRegisters)
self.readInputRegisters.grid(row = 7, column = 0, padx = 20, pady = 6, columnspan=2)
#label for IP Addresses
label = Label(self, text="IP-Address:")
label.grid(row = 2, column = 0, sticky=W)
#Entry for IPAddress
self.ipAddressEntry = Entry(self, width=15)
self.ipAddressEntry.insert(END, "127.0.0.1")
self.ipAddressEntry.grid(row = 3, column = 0, sticky=W)
#label for Display Port
labelPort = Label(self, text="Port:")
labelPort.grid(row = 2, column = 1, sticky=W)
#Text Field for Port
self.portEntry = Entry(self, width=10)
self.portEntry.insert(END, "502")
self.portEntry.grid(row = 3, column = 1, sticky=W)
#label for Display Starting Address
labelStartingAddress = Label(self, text="Starting Address:")
labelStartingAddress.grid(row = 4, column = 3, sticky=W)
#Text Field for starting Address
self.startingAddress = Entry(self, width=10)
self.startingAddress.insert(END, "1")
self.startingAddress.grid(row = 4, column = 4, sticky=W)
#label for Display Number of values
labelStartingAddress = Label(self, text="Number of values:")
labelStartingAddress.grid(row = 5, column = 3, sticky=W)
#Text Field for number of Values
self.quantity = Entry(self, width=10)
self.quantity.insert(END, "1")
self.quantity.grid(row = 5, column = 4, sticky=W)
#label for Response from server
labelResponse = Label(self, text="Response from Server")
labelResponse.grid(row = 2, column = 5, sticky=W, padx = 10)
#Text Field for response from server
self.response = StringVar
self.responseTextField = Text(self, width=35, height = 10)
scroll = Scrollbar(self, command=self.responseTextField.yview)
self.responseTextField.configure(yscrollcommand=scroll.set)
self.responseTextField.insert(END, "")
self.responseTextField.grid(row = 2, column = 5, rowspan=8, padx = 10)
scroll.grid(row = 3, column = 6, rowspan=5, sticky=N+S+E)
#Empty row between Read and Write operations
self.rowconfigure(15, minsize=20)
#label Write operations
readOperationsLabel = Label(self, text="Write Operations", font = 15)
readOperationsLabel.config(font=15)
readOperationsLabel.grid(row = 20, column = 0)
#Label select datatye to write
datatype = Label(self, text="Select datatype to write")
datatype.grid(row = 25, column = 0, sticky=W)
#Combobox to selct the type of variable to write
lst1 = ['Coils (bool)','Holding Registers (word)']
self.variableDatatype = StringVar(self)
self.variableDatatype.set('Coils (bool)')
self.variableDatatype.trace('w',self.datatypeChanged)
dropdown = OptionMenu(self,self.variableDatatype,*lst1)
dropdown.grid(row = 25, column = 1,columnspan = 3, sticky=W)
#Label select value to write
datatype = Label(self, text="Select value to write")
datatype.grid(row = 26, column = 0, sticky=W) #
#Combobox to selct true or false in case "coils" has been selcted
lst1 = ['FALSE', 'TRUE']
self.variableData = StringVar(self)
self.variableData.set('FALSE')
self.dropdownData = OptionMenu(self,self.variableData,*lst1)
self.dropdownData.grid(row = 26, column = 1, sticky=W)
#TextField for the Register Values to write
self.registerValueToWrite = Entry(self, width=10)
self.registerValueToWrite.insert(END, "1")
#label for Display startingAddress
labelStartingAddress = Label(self, text="Starting Address:")
labelStartingAddress.grid(row = 27, column = 0, sticky=W)
#Text Field for starting Address
self.startingAddressWrite = Entry(self, width=10)
self.startingAddressWrite.insert(END, "1")
self.startingAddressWrite.grid(row = 27, column = 1, sticky=W)
#label for Request to Server
labelResponse = Label(self, text="Request to Server")
labelResponse.grid(row = 24, column = 5, sticky=W, padx = 10)
#Text Field containing data to write to server
self.request = StringVar
self.requestTextField = Text(self, width=35, height = 10)
scroll = Scrollbar(self, command=self.requestTextField.yview)
self.requestTextField.configure(yscrollcommand=scroll.set)
self.requestTextField.insert(END, "")
self.requestTextField.grid(row = 25, column = 5, rowspan=8, padx = 10)
scroll.grid(row = 25, column = 6, rowspan=8, sticky=N+S+E)
#Button Add Entry to request list
self.addEntryToRequestList = Button(self, text="Add Value to \n request list", width=15, command=self.addValueToRequestList)
self.addEntryToRequestList.grid(row = 26, column = 3,columnspan = 2)
#Button Delete Entry from request list
self.addEntryToRequestList = Button(self, text="Delete Value from \n request list", width=15, command=self.deleteValueToRequestList)
self.addEntryToRequestList.grid(row = 28, column = 3,columnspan = 2)
#Button Write values to server
writeValuesToServerButton = Button(self, text="Write Requested Values to Server", width=25, command=self.__writeValuesToServer)
writeValuesToServerButton.grid(row = 30, column = 0, padx = 20, pady = 6, columnspan=2)
def addValueToRequestList(self):
if (self.variableDatatype.get() == 'Coils (bool)'):
self.requestTextField.insert(END, self.variableData.get())
self.requestTextField.insert(END, "\n")
else:
self.requestTextField.insert(END, self.registerValueToWrite.get())
self.requestTextField.insert(END, "\n")
def datatypeChanged(self,a,b,c):
self.requestTextField.delete('1.0', END)
if (self.variableDatatype.get() == 'Coils (bool)'):
self.registerValueToWrite.grid_remove()
self.dropdownData.grid(row = 26, column = 1, sticky=W)
else:
self.registerValueToWrite.grid(row = 26, column = 1, sticky=W)
self.dropdownData.grid_remove()
def onReverse(self):
self.name.set(self.name.get()[::-1])
def __ReadCoils(self):
try:
modbusClient = ModbusClient(self.ipAddressEntry.get(), int(self.portEntry.get()))
if (not modbusClient.is_connected()):
modbusClient.connect()
coils = modbusClient.read_coils(int(self.startingAddress.get()) - 1, int(self.quantity.get()))
self.responseTextField.delete('1.0', END)
for coil in coils:
if (coil == FALSE):
response = "FALSE"
else:
response = "TRUE"
self.responseTextField.insert(END, response + "\n")
except Exception as e:
messagebox.showerror('Exception Reading coils from Server', str(e))
finally:
modbusClient.close()
def __ReadDiscreteInputs(self):
try:
modbusClient = ModbusClient(self.ipAddressEntry.get(), int(self.portEntry.get()))
if (not modbusClient.is_connected()):
modbusClient.connect()
discrInputs = modbusClient.read_discreteinputs(int(self.startingAddress.get()) - 1, int(self.quantity.get()))
self.responseTextField.delete('1.0', END)
for inp in discrInputs:
if (inp == FALSE):
response = "FALSE"
else:
response = "TRUE"
self.responseTextField.insert(END, response + "\n")
except Exception as e:
messagebox.showerror('Exception Reading discrete inputs from Server', str(e))
finally:
modbusClient.close()
def __ReadHoldingRegisters(self):
try:
modbusClient = ModbusClient(self.ipAddressEntry.get(), int(self.portEntry.get()))
if (not modbusClient.is_connected()):
modbusClient.connect()
holdingRegisters = modbusClient.read_holdingregisters(int(self.startingAddress.get()) - 1, int(self.quantity.get()))
self.responseTextField.delete('1.0', END)
for register in holdingRegisters:
self.responseTextField.insert(END, str(register) + "\n")
except Exception as e:
messagebox.showerror('Exception Reading holding registers from Server', str(e))
finally:
modbusClient.close()
def __ReadInputRegisters(self):
try:
modbusClient = ModbusClient(self.ipAddressEntry.get(), int(self.portEntry.get()))
if (not modbusClient.is_connected()):
modbusClient.connect()
inputRegisters = modbusClient.read_inputregisters(int(self.startingAddress.get()) - 1, int(self.quantity.get()))
self.responseTextField.delete('1.0', END)
for register in inputRegisters:
self.responseTextField.insert(END, str(register) + "\n")
modbusClient.close()
except Exception as e:
messagebox.showerror('Exception Reading input Registers from Server', str(e))
def __writeValuesToServer(self):
try:
modbusClient = ModbusClient(self.ipAddressEntry.get(), int(self.portEntry.get()))
if (not modbusClient.is_connected()):
modbusClient.connect()
numberOfLines = (int(self.requestTextField.index('end').split('.')[0]) - 2)
if (self.variableDatatype.get() == 'Coils (bool)'):
if (numberOfLines > 1):
valueToWrite = list()
for i in range(1, numberOfLines+1):
textFieltValues = str(self.requestTextField.get(str(i)+".0", str(i+1)+".0")[:-1])
if "TRUE" in textFieltValues: #String comparison contains some ""Null" symbol
valueToWrite.append(1)
else:
valueToWrite.append(0)
modbusClient.write_multiple_coils(int(self.startingAddressWrite.get()) - 1, valueToWrite)
else:
textFieltValues = str(self.requestTextField.get('1.0', END)[:-1])
if "TRUE" in textFieltValues: #String comparison contains some ""Null" symbol
dataToSend = 1
else:
dataToSend = 0
modbusClient.write_single_coil(int(self.startingAddressWrite.get()) - 1, dataToSend)
else:
if (numberOfLines > 1):
valueToWrite = list()
for i in range(1, numberOfLines+1):
textFieltValues = int(self.requestTextField.get(str(i)+".0", str(i+1)+".0")[:-1])
valueToWrite.append(textFieltValues)
modbusClient.write_multiple_registers(int(self.startingAddressWrite.get()) - 1, valueToWrite)
else:
textFieltValues = int(self.requestTextField.get('1.0', END)[:-1])
modbusClient.write_single_register(int(self.startingAddressWrite.get()) - 1, textFieltValues)
except Exception as e:
messagebox.showerror('Exception writing values to Server', str(e))
modbusClient.close()
def deleteValueToRequestList(self):
numberOfLines = (int(self.requestTextField.index('end').split('.')[0]) - 2)
cursorPos = int(self.requestTextField.index(INSERT)[0]) #Find the current Cursorposition e.g. 1.0 -> First line
if (cursorPos-1 != numberOfLines): #don't delete the last line, because the last line contains only a "newline"
self.requestTextField.delete(str(cursorPos)+".0",str(cursorPos+1)+".0") #Delete the whole line using e.g. delete("1.0","2.0) deletes the first line
root = Tk()
app = EasyModbusGUI(root)
app.mainloop()
