Thanks ... I am self taught and appreciate that help. But in the meanwhile I have come up with another possible fix which seems to have worked (so far). I discovered the error message 'hidden' in the Variables under WebClient  'xError' given as  "TCP_INIT_ERROR'. Thus my Google search and I found the Codesys message below.  This had been an ongoing (regular) fault which threatened to crash my home solar diversion project which is now 90 % complete.  All I had to do was to change the input word "FALSE' to 'TRUE' !! If the solution below does not continue to work reliably I will utilise your code.

Your help is much appreciated

BernieBBQ