How to make an item be invisible if no communication with PLC

[mr14]

Hi

How can I set an item to be invisible if the is no communication with the PLC it is related to?

[Archie]

What driver are you using?

[mr14]

MODBUS_TCP

[Archie]

See if this works:

   Private Sub ModbusTCPCom1_ConnectionEstablished(sender As Object, e As EventArgs) Handles ModbusTCPCom1.ConnectionEstablished
         Label1.Visible = True
    End Sub

    Private Sub ModbusTCPCom1_ComError(sender As Object, e As Drivers.Common.PlcComEventArgs) Handles ModbusTCPCom1.ComError
        Label1.Visible = False
    End Sub

[mr14]

Ok, it is working but for some reason t doesn't work on the main form.
What could be the reason?