WaitMem Method

Description
Waits for a memory bit status to change.

Syntax
Sub WaitMem (BitNumber As Integer, Condition As Boolean, Timeout As Single)
Sub WaitMem (Label As String, Condition As Boolean, Timeout As Single)

Parameters

• BitNumber
  An integer expression indicating the memory bit number.
• Label
  A character string indicating the memory bit label.
• Condition
  A Boolean expression indicating the memory bit state.
• Timeout
  Maximum wait time (s)

Remarks
You should always check if a time out occurred by using the TW method. See the example below.

If an error occurs and the ErrorNumber property of the SpelException is 3101, see the remarks in the SetPoint method.

See Also
WaitSw Method, SetPoint Method

WaitMem Example
VB Example:

' Wait for memory bit 1 to be 1 (True)  
' Max time is 5 seconds  
m_spel.WaitMem(1, True, 5)  
' Did WaitMem time out?  
If m_spel.TW() Then  
    MsgBox "memory bit time out occurred"  
End If  

C# Example:

// Wait for memory bit 1 to be 1 (True)  
// Max time is 5 seconds  
m_spel.WaitMem(1, True, 5);  
// Did WaitMem time out?  
if (m_spel.TW())  
    MessageBox.Show("memory bit time out occurred”);