Thanks for your feedback
Indication on the CCU is 6 ( pic attached )
We do not know how to load backup via step 7 .
We have been clearing the NC & PLC files as instructions below
Turn the machine off
Switch s3 on ccu to 1 power on and wait till 6 is shown on ccu
Power off switch back to 0 power on again
When the machine is on Clear the plc by switching s4 to 2 then 3 the sf led will go off and then on again switch to 2 then to 3 wait for ps led to come back on then back to 2 pause one second then back to 0 power off and on again
Try reloading data again when booted up
We are trying to load the PLC & NCK files using the Sinucom PCIN software and do not have Simatic Manager Software.