Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Judy Popelas0
Daniel H. Miller0
Ferrell Mercer0
Date of Patent
November 16, 2010
0Patent Application Number
118738520
Date Filed
October 17, 2007
0Patent Primary Examiner
Patent abstract
A diagnostic and service logic program for a programmable logic controller (PLC) is provided in parallel with the main machine logic program. The diagnostic and service logic program has the same functionality as the main machine logic program, but can be modified and operated independently of the main machine logic program for testing and debugging a faulty main machine logic program. The PLC can be switched between programs for testing and debugging.
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