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UPDATEIO will force an update of all in- and outputs on the RTCU platform. Normally UPDATEIO is not needed as the BEGIN/END construction will handle the updating of the in- and outputs. But in some cases, it can be necessary to utilise the UPDATEIO manually in a program. For example in a REPEAT statement, it could be necessary to update all in- and outputs in each iteration.
UPDATEIO will update first the inputs, then the outputs, in that order.
This example will make a "running" light on the 16 outputs. Output 1 will be on for 100 ms, then output 2 will be on for 100 ms, and so on.