Routed by tia-openness-roadmap. C# Openness implementation of topology and low-level network engineering: subnets, nodes, IO systems, DP master systems, ports, interfaces, addresses, channels, transfer areas, network topology manipulation, and AML/CAx network exchange.

tia-networks

Scope

Topology and low-level network 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).

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/subnets-and-nodes.md`	Reading/writing subnet attributes (name, type, PROFIBUS bus params, isochronous settings); accessing node attributes (IP address, PROFINET device name, node type); SubnetOwner service
`references/io-systems.md`	PROFINET IO system attributes; DP master system (IoSystem) attributes; TransferArea creation/deletion on PN or DP interfaces
`references/addresses-and-channels.md`	Address objects (StartAddress, IoType, Length, IsochronousMode, ProcessImage); channel access (ChannelType, ChannelIoType); AddressController service
`references/io-timing.md`	IoConnector timing/watchdog attributes (PnUpdateTime, PnWatchdogFactor, RtClass, SyncRole); IO device interface isochronous settings (PnSendClock, IsochronousTi, IsochronousTo)

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

Execution pattern

Access devices and device items from Project.Devices
Navigate network interfaces and nodes via Openness HW namespace
Use GetService<SubnetOwner>() to access subnets owned by a device item
Use GetService<NetworkInterface>() to access the network interface
Create or modify IO systems, subnets, nodes as needed
Modify addresses or channel timing via deviceItem.Addresses / deviceItem.Channels
Compile hardware after changes (see tia-project-general/references/compile.md)