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ISA88 Technical report discussion uncovers new ground...Part 3 of 4
Here’s the third concept intended to supplement those in the ISA 88.00.01 standard in context of the TR88.00.02 Technical Report, as offered by Randy Dwiggins of Maverick Technologies.
3. Unit (Machine) Mode
A Unit (Machine) Mode implements the state model for one Equipment Unit Procedure. Exactly one Unit Mode will be enabled in a machine at any time. The enabled Unit Mode may additionally determine the ability for manual or other controls to manipulate the states of other procedural elements and equipment entities within the Unit.
Note: This functionality is consistent with the Mode definition in ISA 88.00.01 and offers additional examples in which the Unit Mode determines what equipment procedural logic may execute (like the role of modes in control modules), rather than simply how it should execute (like the example procedural control modes in ISA 88.00.01).
Take a look at the Part 1 and ISA88 Technical report discussion uncovers new ground...Part 2 of 4 and see Part 4 next week
As stated, we hope they can be used in a future revision. Please comment using the tools below!
ISA88 Technical report discussion uncovers new ground...Part 3 of 4
July 18, 2008
Here’s the third concept intended to supplement those in the ISA 88.00.01 standard in context of the TR88.00.02 Technical Report, as offered by Randy Dwiggins of Maverick Technologies. 3. Unit (Machine) Mode
A Unit (Machine) Mode implements the state model for one Equipment Unit Procedure. Exactly one Unit Mode will be enabled in a machine at any time. The enabled Unit Mode may additionally determine the ability for manual or other controls to manipulate the states of other procedural elements and equipment entities within the Unit.
Note: This functionality is consistent with the Mode definition in ISA 88.00.01 and offers additional examples in which the Unit Mode determines what equipment procedural logic may execute (like the role of modes in control modules), rather than simply how it should execute (like the example procedural control modes in ISA 88.00.01).
Take a look at the Part 1 and ISA88 Technical report discussion uncovers new ground...Part 2 of 4 and see Part 4 next week
As stated, we hope they can be used in a future revision. Please comment using the tools below!
Posted by David Chappell on July 18, 2008 | Comments (0)
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