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June 2009

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Subject:
From:
"Mellaerts, Dirk" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Mellaerts, Dirk
Date:
Tue, 2 Jun 2009 16:51:35 +0200
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Hi ... I have a SMEMA 9851 protocol question.  To optimize for speed, I
would like to partially load a board from the upstream machine as soon
as one is presented, and use a walking beam any time later to fully pull
in the board when my work area is clear.  My question: is it OK to
switch my status MachineReady to MachineNotReady before the board has
cleared the upstream machine's exit sensor (in the timing diagram, this
means doing T4 before T3 has happened)?   Thanks, Dirk.


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