Atlas Copco PowerMACS 4000, User Manual

Page: 594 / 668

Peripheral Devices
594 9836 3521 01
Setting a Boolean value in the target system
This example assumes that there are textboxes for address and value, and a dropdown list for the bit
value.
Private Sub cmdSetBool_Click()
'
' Abstract: Set PLC Bool from API-server and display it
'
On Error GoTo ErrorHandler
Dim Ret As RetCodeEnum
Dim Address As Integer
Dim Value As Boolean
If Val(txtAddress) < 1 Or Val(txtAddress) > 999 Then
MsgBox "Address must be between 1 and 999"
txtAddress.SetFocus
Exit Sub
End If
Address = CInt(txtAddress)
Value = CBool(txtValue)
Ret = mPowApi.SetPLCBool(Address, Val(cboBit), Value)
if Ret <> eRetOk then msgBox "SetPLCBool returned: " & Ret
Exit Sub
ErrorHandler:
If Err.Number = 13 Then
MsgBox "Value must be a valid boolean"
txtAddress.SetFocus
Exit Sub
End If
MsgBox err.description
exit sub
End Sub