WinCC OA — Message Flow Simulator
dpConnect · dpSet · dpGet — Inter-manager communication
dpGet
dpSet
dpConnect
PLC Live
Full cycle
History read
Node.js → Kafka
Claude AI (MCP)
UNS (MQTT)
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Subscription Table (EV)
−
Manager
DPE
Callback
Process Image (EV — RAM)
Request / dpSet
Notification
Response / Callback
Persistence
Online Change (NGA)
OPC UA (field)
Kafka (streaming)
MCP / Claude AI
MQTT (UNS)
WinCC OA Message Flow Simulator
Choose a scenario
⇩
S1
dpGet
One-time value read from the process image (RAM).
⇧
S2
dpSet
Operator setpoint write to all subscribed managers.
⇄
S3
dpConnect
Publish/subscribe subscription to a datapoint.
☇
S4
PLC Live
Spontaneous PLC data, real-time push notifications.
↻
S5
Full cycle
Full furnace regulation cycle with 2 UIs.
☰
S6
History read
History read via NGA and PostgreSQL.
▸▸
S7
Node.js → Kafka
Kafka streaming for predictive maintenance.
✶
S8
Claude AI (MCP)
PID optimization via Claude Desktop App and MCP.
⍑
S9
UNS (MQTT)
Unified Namespace (UNS) architecture via MQTT.
↺
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