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

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

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Automation System
Microcomputer-based control sys-tems

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

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