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ISA TR84.00.09– Annex A - Example SIS Architectures
Air-gapped
In this design, the SIS is both logically
and physically isolated from communicating
with the rest of the zones.
Interfaced
SIS and BPCS are still connected using
discrete wiring, but they now include a
direct point-to-point communication connection.
Integrated 2 zone
the BPCS and SIS systems are fully
integrated and provide direct, real-time
communication between the systems.
Integrated 1 zone
The SIS and BPCS systems are integrated
providing greater communication between
those systems and higher-level systems.