S7-1200 / S7-1200 G2 · MAILBOX PROTOCOL V1
See the conversation.
Real S7 transport. A simulated tank. Every transaction visible.
Connecting…
Waiting for the first S7 readPLC → NODE-RED0validated messages
NODE-RED → PLC0acknowledged commands
REJECTED0protocol violations
S7 OPERATIONS0network reads + writes
Process view
SIMULATED TANK42.0% CAPACITY
P1
T-001 Duotank demo vessel
Controls send through Node-RED → S7 → PLC.
Send a transaction
BIDIRECTIONALCRC and sequence checked in both directions.
TX / PLC → NODE-REDEMPTYSequence 0
RX / NODE-RED → PLCEMPTYSequence 0
Transaction stream
LATEST 30| TIME | DIRECTION | SEQUENCE | TOPIC | PAYLOAD |
|---|---|---|---|---|
| Send a message to see the complete transaction. | ||||
Fault injection Test a failure, then clear it to return to normal.
No active faults
No errors.