DEADMAN_VIGILANCE
Non-vital driver vigilance monitor — staged warning and penalty brake, edge-taken acknowledgement, held-control detection and recovery only at standstill.
When to use it
Use DEADMAN_VIGILANCE when a supervisory controller has to monitor that the driver is acknowledging periodically while the train is moving, and escalate to a warning and then a penalty brake request when the acknowledgement does not come.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type |
|---|---|
| ENABLE | BOOL |
| MOVING | BOOL |
| ACK | BOOL |
| ZERO_SPEED | BOOL |
| ZS_OK | BOOL |
| RESET | BOOL |
| T_VIG | TIME |
| T_WARN | TIME |
| ACK_MAX | TIME |
Outputs
| Port | Type | Unit |
|---|---|---|
| BRAKE_CMD | BOOL | — |
| STAGE | USINT | — |
| WARN | BOOL | — |
| PENALTY_LATCHED | BOOL | — |
| ALM_ACK_HELD | BOOL | — |
| T_REMAIN_S | REAL | s |
| RESET_INHIBIT | BOOL | — |
| ISOLATED | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
DEADMAN_VIGILANCE commands a real actuator. It is written to sit underneath your own interlock, permissive and protection logic — not to replace it. Commission it as you would any control block you wrote yourself.
Validation evidence
- Tests
- 11
- Simulated scans
- 342
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download DEADMAN_VIGILANCE — free
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