Mscomm1.output problem

Hi All

I need help with MScomm1.output and times

i want to send multi Command Lines Via RS232 thing is only the first or Second line works and i want to add 2 second delay to them.

Example of what i want to send:-

Mscomm1.output = chr(2) & "C_1" & chr(3) & chr(2) & "P_1" & chr(3) & chr(2) & "X_1" & chr(3) & chr(4)

2 Sec Delay

Mscomm1.output = chr(2) & "S_1" & chr(3) & chr(4)

2 Sec Delay

Mscomm1.output = chr(2) & "C_1" & chr(3) & chr(2) & "P_2" & chr(3) & chr(2) & "X_1" & chr(3) & chr(4)

2 Sec Delay

Mscomm1.output = chr(2) & "S_1" & chr(3) & chr(4)

ETC ETC

Kind Regards

Steve

There are ways to create a delay, I can think of two:

The old brute force method:

Dim dateFut as date


Mscomm1.output = chr(2) & "C_1" & chr(3) & chr(2) & "P_1" & chr(3) & chr(2) & "X_1" & chr(3) & chr(4)

dateFut = dateadd("s",2,now)
Do
DoEvents
Loop Until Now > dteFut


Mscomm1.output = chr(2) & "S_1" & chr(3) & chr(4)

dateFut = dateadd("s",2,now)
Do
DoEvents
Loop Until Now > dteFut

etc.

A second more "elegant" way of doing this is using a Timer. To do this put a timer on your form and add this statement to the form's declarations:

private intCount as integer

Set the timer's Enabled property to False and Interval property to 2000.

In the timer event add this code:

Code:

---

Private Sub Timer1_Timer()

  select case intCount
    case 0
      Mscomm1.output = chr(2) & "C_1" & chr(3) & chr(2) & "P_1" & _
          chr(3) & chr(2) & "X_1" & chr(3) & chr(4)
    case 1
        Mscomm1.output = chr(2) & "S_1" & chr(3) & chr(4)
    case 2
        Mscomm1.output = chr(2) & "C_1" & chr(3) & chr(2) & "P_2" & _
          chr(3) & chr(2) & "X_1" & chr(3) & chr(4)
    case 3
        Mscomm1.output = chr(2) & "S_1" & chr(3) & chr(4)

        'This statement must be in the last case, move from here
        'if you have more strings to send out the COMM port.
        Timer1.Enabled = False
  end select

  intCount = intCount + 1
End Sub


'To send the strings call the following proc.
Private Sub SendCommand()

  'Initialize the counter.
  intCount = 0  'Points to first command

  'Start the timer.
  Timer1.Enabled = True

End Sub

---

The above are just ideas and have not been tested. Regards, Sgarv

I would use a timer rather than a busy loop.

Hi

I tried the following but disabled mscomm for moment and put print 1 , print 2, print 3 after each case but after 2 sec it keeps doing print 1 not 2 3 4

Regards

Steve


Private Sub Sendcommand_Click()


'Initialize the counter.
intCount = 0 'Points to first command

'Start the timer.
Timer1.Enabled = True

End Sub

Private Sub Timer1_Timer()

Select Case intCount
Case 0
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_1" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "1"
Case 1
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "2"
Case 2
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_2" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "3"
Case 3
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "4"

'This statement must be in the last case, move from here
'if you have more strings to send out the COMM port.
Timer1.Enabled = False
End Select

intCount = intCount + 1
End Sub

You need top dim your var intCount in the form declarations section so it will retain its value for future timer cycles.

You should also turn on Option Explicit in all programs you do and always dim all variables

Hi do you mean put this in the Private Sub Timer1_Timer() section


I have tried these:-

Dim intCount As Variant

Dim intCount As Long

Dim intCount As Integer

but keeps printing 1 on screen after 2sec

Regards

Steve

No, like this:

Code:

---

'Way at top of code module of form.
Option Explicit

'Form's (or module's) declaration section
Private intCount As Integer

'Code follows
Private Sub Sendcommand_Click()

  'etc

End Sub

---

Humble opinion: Never leave out the option explicit statement at the top of the code module. Debugging a simple problem like this would have been easy. Do you know what option explicit is for? If not:

http://msdn.microsoft.com/en-us/library/y9341s4f%28v=vs.80%29.aspx

If option explicit is not automatically included when you add a new form or module do this:

In the VB6 IDE click Tools menu option
In Tools menu click Options...
Check "Require variable declaration" check box - note that by default it is unchecked.

Hope that helps, SGarv

Yes, always use Option Explicit

Thanks very much for your help that works great but i just want to go 1 step further, by making case 0 have a 3 sec delay before it gets to case 1 then case 1 to case x run for 2 sec like it is now then for it to repeat the whole process again in a loop. until i click the stop button.

thnaks for your help.

Kind Regards

Steve

In that case you should use an interval of 1000 so the timer fires every second and case the numbers on the case statements to the number of seconds needed.

So your first case would be 2 and the next one would be 4 and so on.

thanks for that how do i repeat it until i click stop with commad button

Think about it a little, it is very easy. Hint:It has to do with the value of your intCount variable

Sorry can not think what it is to repeat the process

'Way at top of code module of form.
Option Explicit

'Form's (or module's) declaration section
Private intCount As Integer




Private Sub Command1_Click()
End
End Sub

Private Sub Sendcommand_Click()

Dim intCount As Integer



'Initialize the counter.
intCount = 0 'Points to first command i tried changing this

'Start the timer.
Timer1.Enabled = True

End Sub

Private Sub Timer1_Timer()





Select Case intCount
Case 0
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_1" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "1"
Case 4
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "2"
Case 6
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_2" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "3"
Case 8
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "4"
Case 12
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "5"

Form1.Cls


'This statement must be in the last case, move from here
'if you have more strings to send out the COMM port.
Timer1.Enabled = False
End Select

intCount = intCount + 1 and i tried changing this

End Sub


regards

Simply add another case at whatever number of seconds and change intCount=0 or add intcount=0 in your case 12 depending on when you want the count to start over.

It is very simple if you just think about what it is actually doing.

Hi
I added CASE 14 with intCount = 0 but wont restart


'Way at top of code module of form.
Option Explicit

'Form's (or module's) declaration section
Private intCount As Integer




Private Sub Command1_Click()
End
End Sub

Private Sub Sendcommand_Click()

Dim intCount As Integer

' MessageBox.Show ("Counter is currently: " + CStr(intCount))



'Initialize the counter.
intCount = 0 'Points to first command

'Start the timer.
Timer1.Enabled = True

End Sub

Private Sub Timer1_Timer()



Form1.Cls

Select Case intCount
Case 0
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_1" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "1"
Case 4
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "2"
Case 6
' Mscomm1.output = Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_2" & _
Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
Print "3"
Case 8
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "4"
Case 12
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)
Print "5"
Case 14
' Mscomm1.output = Chr(2) & "S_1" & Chr(3) & Chr(4)

intCount = 0 I added this line but wont restart


'This statement must be in the last case, move from here
'if you have more strings to send out the COMM port.
Timer1.Enabled = False
End Select

intCount = intCount + 1

End Sub

regards

steve

You are stopping the timer

Another method would be to create a queue and send each element of the queue at 2 second intervals

Code:

---

Option Explicit

Private colQueue As Collection

Private Sub Command1_Click()
Set colQueue = New Collection
colQueue.Add Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_1" & Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
colQueue.Add Chr(2) & "S_1" & Chr(3) & Chr(4)
colQueue.Add Chr(2) & "C_1" & Chr(3) & Chr(2) & "P_2" & Chr(3) & Chr(2) & "X_1" & Chr(3) & Chr(4)
colQueue.Add Chr(2) & "S_1" & Chr(3) & Chr(4)
MSComm1.Output = colQueue.Item(1)
colQueue.Remove (1)
Timer1.Enabled = True
End Sub

Private Sub Form_Load()
Timer1.Enabled = False
Timer1.Interval = 2000
'
' Put the MSComm1 initialisation code here
'
End Sub

Private Sub Timer1_Timer()
If colQueue.Count > 0 Then
    MSComm1.Output = colQueue.Item(1)
    colQueue.Remove (1)
Else
    Timer1.Enabled = False
    MsgBox "All data sent"
End If
End Sub

---

@DataMiser

Thanks for that i swear i turned of the timer but it works now but it dont go to case 0 it starts at case 4???

regards

Steve

That's because you are adding 1 after you set it to 0 so it will not be equal to 0 when it comes back around. In your case 14 set intCount=-1 instead