# Tia Devices General

> C# Openness implementation of device-level operations

- Skill: `czarnak/tia-devices-general` (Agent Skill, multi-file: 9 files)
- Install (CLI): `npx skillmds@latest add czarnak/tia-devices-general`
- Raw SKILL.md: https://api.skillmd.com/api/skills/czarnak/tia-devices-general/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: czarnak (https://skillmd.com/u/czarnak)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/czarnak/tia-devices-general

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# tia-devices-general

## Scope

Device-level engineering — full C# Openness implementation.

When the roadmap routes here, the entire solution is C#.
Do not mix with Python wrapper calls.
Always load `tia-csharp-common` first (done by roadmap).

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## 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/device-enumeration.md` | Listing, finding, or iterating devices; device groups; ungrouped devices; navigating DeviceItems. |
| `references/device-creation.md` | Creating or deleting devices; understanding TypeIdentifier formats (OrderNumber, GSD, System). |
| `references/device-attributes.md` | Reading/writing basic device or device-item attributes; using GsdDevice service; managing Application IDs (CustomIdentityProvider). |
| `references/hardware-parameters.md` | Setting specific hardware parameters via SetAttribute (e.g., IO addresses, diagnostic settings, module-specific enums). |
| `references/software-container.md` | Accessing PlcSoftware or HmiTarget from a device; using the SoftwareContainer service. |
| `references/device-item-operations.md` | Plugging, moving, copying, or deleting device items/modules; changing device/module types; hardware catalog queries. |
| `references/device-item-interfaces.md` | NetworkInterface service; IOController/IOConnector attributes; hardware identifiers; managing addresses and channels. |
| `references/networks-and-connections.md` | Opening hardware/network editors; querying targets from a network perspective; address object attributes. |

For tasks spanning multiple areas, load all relevant reference files before generating code.

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## Execution pattern

1. Access `Project.Devices` composition (or `DeviceGroups` / `UngroupedDevicesGroup`)
2. Resolve the exact existing object or exact `TypeIdentifier`; never select the first catalog/device/device-item match
3. Before create, plug, move, copy, change-type, attribute write, import, or delete, obtain explicit authorization for the exact project, object identity, and requested mutation
4. Navigate the complete recursive `DeviceItem` hierarchy as needed
5. Access `SoftwareContainer` via `GetService<SoftwareContainer>()` when PLC, classic HMI, or Unified HMI software is needed
6. Put supported project mutations in `ExclusiveAccess` plus a transaction and allow exceptions to roll it back (see `tia-csharp-common`)
7. Use `ICompilable` for hardware or software compile and inspect the full `CompilerResult` (see `tia-project-general/references/compile.md`)
8. Do not save when selection is ambiguous, a service is unavailable, a mutation reports an error, or compile/consistency validation fails