Document

Documentation & Design Support

Network drawings, IP schedules, firewall schedules, interface registers, cybersecurity procedures, and FAT/SAT documentation that support assurance and maintainability.

OT documentationnetwork drawingsfirewall schedule

The problem

Many OT projects suffer from weak or incomplete documentation, making future maintenance, assurance review, and cybersecurity management difficult.

What we do

Activities

  • produce network drawings
  • develop IP address schedules
  • produce firewall schedules
  • write cybersecurity procedures
  • support FAT/SAT documentation
  • create technical specifications
  • update engineering records

Deliverables

  • network architecture drawings
  • asset register
  • IP address plan
  • firewall rule schedule
  • interface register
  • cybersecurity procedure set
  • FAT/SAT documentation

Example scenario

Example scenario

Example scenario: A production facility had inherited several years of undocumented OT modifications, leaving site teams without reliable drawings or interface records.

Meridian-style response

Meridian-style response: The known architecture was reconstructed from available records, interviews, and site evidence. Updated documentation was produced to support maintenance, future upgrades, and cybersecurity assessment.

Discuss documentation & design support

Book a technical discovery call to discuss the control system, project stage, documentation gap, or assurance requirement without exposing sensitive site or client details.