Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

run regular simulated tests using TARP (testing of Applications Recovery Planes)
do not allow unbonded service people to work on your equipment
do not leave training manuals unsecured
Verify the reputation of the people installing your system
None of these

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Automation System
Microcomputer-based control sys-tems

will tend to increase in cost.
will have more standard industrial application software available in the future.
All of these
None of these
will just keep their present capability

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Automation System
How is the integral mode implemented on a digital controller?

All of these
the digital controller cannot handle integral mode
None of these
the error signal is summed over a discrete time interval and accumulated by the controller
the error is divided into discrete amounts

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