How to code PLC/Lookout to wait for acknowledgements?

[davey31415]

Can anyone provide suggestions on how to code PLCs and Lookout to wait for acknowledgements from each other or a reference to a discussion about this topic? 

Thanks,

Davey 

[Mike@DTSI]

Please be more detailed. 

Lookout polls PLC, PLC responds.  Is that acknowledgment?

Mike

Message Edited by Mike@DTSI on 07-15-2009 12:48 PM

[davey31415]

Lookout polls PLC, PLC responds, Lookout performs a specific action after PLC responds

and also the reverse... 

PLC polls Lookout, Lookout responds, PLC waits until Lookout finishes responding.

There are a few different things I'd like to do:

1. Have Lookout PLC timers and counters with values from a DataTable.  The PLC should wait until the DataTable is completely updated.

2. Have Lookout save to a data file.  The PLC should wait until Lookout has completed saving the data.