Service and diagnostic logic scan apparatus and method

Details Service and diagnostic logic scan apparatus and method Service and diagnostic logic scan apparatus and method

2007-10-17

2010-11-16

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S031000

Reexamination Certificate

active

07836347

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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