Understand the environment. Separate visibility from control. Plan for data quality.
Understand the environment
Document which systems hold process data, which interfaces are approved and who owns changes. Availability and safety responsibilities must be clear before implementation.
Separate visibility from control
A monitoring use case may be satisfied through a read-only integration. Do not introduce control capabilities simply because an interface technically supports them.
Plan for data quality
Equipment clocks, sampling rates and connectivity differ. Show freshness and provenance, and agree how missing or contradictory signals should appear to an operator.
