RUN_HOURS_METER
Engine run-hours and start counter with feedback debounce, plus a service-interval accumulator with a latched service-due alarm.
When to use it
Use RUN_HOURS_METER when an engine, alternator or any driven machine reports a running feedback and its hours and starts drive the maintenance schedule — standby genset exercise logging, service intervals, or warranty and duty records.
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 | Unit |
|---|---|---|
| RUNNING | BOOL | — |
| START_DEB | TIME | — |
| STOP_DEB | TIME | — |
| SERVICE_INT_H | REAL | h |
| SVC_RESET | BOOL | — |
| RESET | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| HOURS | LREAL | h |
| STARTS | UDINT | — |
| RUN_PROVEN | BOOL | — |
| HOURS_SINCE_SVC | LREAL | h |
| HOURS_TO_SVC | LREAL | h |
| SVC_OVERDUE | BOOL | — |
| ALM_SVC_DUE | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
Supervised control write
RUN_HOURS_METER 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
- 8
- Simulated scans
- 553
- 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
Download RUN_HOURS_METER — free
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