Use the Worksheet_Change event, not calculation.

Private Sub Worksheet_Change(ByVal Target As Range)
Const WS_RANGE As String = "H1:H10" '<--- change to suit

On Error GoTo ws_exit
Application.EnableEvents = False

If Not Intersect(Target, Me.Range(WS_RANGE)) Is Nothing Then
With Target
'your code
End With
End If

ws_exit:
Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click


--
---
HTH

Bob

(change the xxxx to gmail if mailing direct)


"PaulW" wrote in message
...
I have a workbook that i want to update only when data is inputted.

Witihin the macro i am moving data which is recalculating the sheet which
then triggers the macro again which in effect loops the sheet.

The two criteria i have are a date and then the trigger is when data is
inputted.
The aim is to move the inputted data from the input cell (always a
particular column) to a new column.

How can I get the sheet to only update with data input?

If you put the code in the sheet module as I said, you don't need to test
the sheet name.

If you turn off events as I showed you, it will not re-trigger.

Show us all the code, and tell us where you stored it.

--
---
HTH

Bob

(change the xxxx to gmail if mailing direct)


"PaulW" wrote in message
...
Thanks Bob,

Here is the code that i've added into your example, unfortunatly it
doesn't
trigger at all now (I changed the range from H1:H10 to A1:AU100.

Quite alot of this i'm trying to write from guesswork, and since i've been
trying to modify it for a while its a bit messy. Basically, I have the
information in 3 columns (not next to each other) and each of these 3
columns
has a date. When the macro is triggered the active column needs to be 2, 8
or
14. else it exits the sub, else it assigns another variable to the next
column. Then it checks if today is greater than the date for that column.
If this cut off date has been reached it needs to move what has just been
entered to the next column at the top, deleting where it was originally
entered.

Essentially, the dates for these columns represent deadlines, and when a
new
job is entered into a column a message needs to be shown showing that the
deadline has already passed, and assign it to the next deadline.

The main difficulty is that when the information is moved, with the
initial
worksheet_calculation then the sheet calculates again (I think) which
triggers the macro to run again, and the cutoff date for that column is
still
invalid, resulting in a loop.

If ActiveSheet.Name < "Manchester" Then Exit Sub

rang = ActiveCell.Column
roo = ActiveCell.Row
Sheets("Manchester").Cells(roo - 1, rang).Select


today = Range("B4").Value
rang = ActiveCell.Column
roo = ActiveCell.Row
addres = ActiveCell.Address
Valu = Sheets("Manchester").Cells(5, rang + 3).Value
dat = Sheets("Manchester").Cells(6, rang + 1).Value
dat2 = Sheets("Manchester").Cells(6, rang + 6).Value
num = 0

If rang = 2 Then num = 8
If rang = 8 Then num = 14
If rang = 14 Then num = 2
If num = 0 Then Exit Sub

sum1 = Sheets("Manchester").Cells(60, rang + 4).Value
If sum1 = 1 Then Exit Sub

If today dat Then
MsgBox ("Manchester - The Cut off point has been reached for this slot.
Please use the next available slot. (" & dat2 & ")")

act = Range(addres).Value

newc = Sheets("Manchester").Cells(10, num).Address
Range(newc).Select
With Range(newc)
Value = act
End With

With Range(addres).ClearContents
End With
Else: End If
End With
End If