tia-import-export

Scope

Import/export strategy and round-trip design — full C# Openness implementation.

When the roadmap routes here, the entire solution is C#. Do not mix with Python wrapper calls.

Use this skill for

• choosing direct object edits vs import/export
• XML / SimaticML / AML / CAx strategy
• bulk engineering changes
• export granularity
• folder-structure planning
• overwrite behavior
• project / HMI / PLC / library round-trip workflows
• object-specific import/export compositions
• mixed import + low-level object-model editing

Execution pattern

1. identify target object class and Openness composition
2. identify exchange format (SimaticML, AML, XML)
3. decide file-based vs direct-edit approach
4. treat every import file as untrusted input: resolve the exact path, verify its provenance and expected object kind, and validate the format before opening the project for modification
5. obtain explicit authorization for the exact project, target composition, overwrite policy, and intended import; an earlier export, compile, or static check is not authorization to mutate a live project
6. define source root / target root / overwrite / structure; do not use ImportOptions.Override as a default
7. use Openness import/export services on the correct composition and inspect any returned result object, messages, error count, and state
8. compile relevant hardware/software after import and validate consistency state
9. Do not save the project when import, result validation, or compile/consistency validation fails; close or roll back through the operation-specific supported mechanism

Exports can overwrite filesystem content even though they do not mutate the project. Resolve the output path and require an explicit overwrite decision before replacing an existing file.

Reference files

Load ONLY the reference file(s) relevant to the task. Do not load all files at once.

Reference file	Load when the task involves
references/overview.md	general import/export principles, ExportOptions/ImportOptions enums, open references, SIMATIC ML versioning, exportable object matrix
references/hmi-screens.md	exporting or importing HMI screens, screen templates, pop-up screens, slide-in screens, permanent areas, faceplate instances
references/hmi-tags-and-data.md	HMI tag tables, individual HMI tags, cycles, connections, text lists, graphic lists, VB scripts, special HMI tag considerations (integrated connection, UDT)
references/plc-blocks.md	PLC block export/import (FB, FC, OB, DB), UDTs, know-how protection, failsafe blocks, system blocks, GRAPH, snapshots, instance DB creation, DB value access, OPC UA XML export, document export/import, open-reference and structural-change import
references/plc-alarms-and-tags.md	PLC tag tables, individual PLC tags/constants, alarm classes, PLC alarm text lists (XLSX), ProDiag supervisions, watch tables, force tables
references/hardware-aml.md	CAx/AML export and import, CaxProvider service, project-level vs device-level transfer, CaxImportOptions, TransferResult, type identifiers, AML structure
references/project-data.md	project-level texts export/import (XLSX), project graphics export/import