415e62c585
Wire Galaxy security_classification to OPC UA AccessLevel (ReadOnly for SecuredWrite/VerifiedWrite/ViewOnly). Use deployed package chain for attribute queries to exclude undeployed attributes. Group primitive attributes under their parent variable node (merged Variable+Object). Add is_historized and is_alarm detection via HistoryExtension/AlarmExtension primitives. Implement OPC UA HistoryRead backed by Wonderware Historian Runtime database. Implement AlarmConditionState nodes driven by InAlarm with condition refresh support. Add historyread and alarms CLI commands for testing. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
OPC UA CLI Tool (.NET)
Command-line utility for testing OPC UA server functions. Built with the OPC Foundation UA .NET Standard client library and CliFx.
- Runtime: .NET 10
- OPC UA Client: OPCFoundation.NetStandard.Opc.Ua.Client
Build & Run
cd tools/opcuacli-dotnet
dotnet build
dotnet run -- <command> [options]
Commands
connect
Test connection to an OPC UA server:
dotnet run -- connect -u opc.tcp://localhost:4840
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
read
Read a value from a node:
dotnet run -- read -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode"
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to read (required) |
write
Write a value to a node (auto-detects the data type from the current value):
dotnet run -- write -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode" -v 42
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to write to (required) |
-v |
Value to write (required) |
subscribe
Monitor a node for value changes:
dotnet run -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode" -i 500
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to monitor (required) |
-i |
Polling interval in milliseconds (default: 1000) |
browse
Browse the OPC UA address space:
# Browse top-level Objects folder
dotnet run -- browse -u opc.tcp://localhost:4840
# Browse a specific node
dotnet run -- browse -u opc.tcp://localhost:4840 -n "ns=2;s=MyFolder"
# Browse recursively (depth 3)
dotnet run -- browse -u opc.tcp://localhost:4840 -r -d 3
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to browse (default: Objects folder) |
-d |
Maximum browse depth (default: 1) |
-r |
Browse recursively using --depth as max depth |
historyread
Read historical data from a node:
dotnet run -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30"
Read with aggregate (1-hour average):
dotnet run -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30" --aggregate Average --interval 3600000
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to read history for (required) |
--start |
Start time (default: 24 hours ago) |
--end |
End time (default: now) |
--max |
Maximum number of values (default: 1000) |
--aggregate |
Aggregate function: Average, Minimum, Maximum, Count |
--interval |
Processing interval in ms for aggregates (default: 3600000) |
alarms
Subscribe to alarm events on a node:
dotnet run -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001"
With condition refresh to get current alarm states:
dotnet run -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001" --refresh
| Flag | Description |
|---|---|
-u |
OPC UA server endpoint URL (required) |
-n |
Node ID to monitor for events (default: Server node) |
-i |
Publishing interval in milliseconds (default: 1000) |
--refresh |
Request a ConditionRefresh after subscribing |
Example: Testing the LmxOpcUa Server
cd tools/opcuacli-dotnet
# Connect to the local OPC UA server
dotnet run -- connect -u opc.tcp://localhost:4840
# Browse the address space
dotnet run -- browse -u opc.tcp://localhost:4840 -r -d 3
# Read a tag value
dotnet run -- read -u opc.tcp://localhost:4840 -n "ns=2;s=TestMachine_001.SomeAttribute"
# Subscribe to live updates
dotnet run -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=TestMachine_001.SomeAttribute" -i 500
Example: Testing with the OPC PLC Sample Server
# Start the sample server (from another terminal)
cd tools/opcsampleserver/publish
dotnet opcplc.dll --pn=50000 --autoaccept --unsecuretransport
# Browse the sample server
dotnet run -- browse -u opc.tcp://localhost:50000 -r -d 2
# Read a sample node
dotnet run -- read -u opc.tcp://localhost:50000 -n "ns=2;s=SlowUInt1"