GEN_PRIORITY_ROTATE
Run-hours balancing across up to four sets: which machine starts next, which stops next, and a hysteresis that stops the choice flickering.
When to use it
Use GEN_PRIORITY_ROTATE when a plant of up to four interchangeable sets runs fewer machines than it owns, and the duty must rotate so the fleet wears evenly instead of one lead set accumulating every hour.
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 |
|---|---|---|
| ENABLE | BOOL | — |
| HOURS_1 | LREAL | h |
| HOURS_2 | LREAL | h |
| HOURS_3 | LREAL | h |
| HOURS_4 | LREAL | h |
| HOURS_OK | BOOL | — |
| AVAIL_1 | BOOL | — |
| AVAIL_2 | BOOL | — |
| AVAIL_3 | BOOL | — |
| AVAIL_4 | BOOL | — |
| RUN_1 | BOOL | — |
| RUN_2 | BOOL | — |
| RUN_3 | BOOL | — |
| RUN_4 | BOOL | — |
| HOLD | BOOL | — |
| ROTATE | BOOL | — |
| HYST_H | REAL | h |
| SPREAD_LIM_H | REAL | h |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| NEXT_START | USINT | — |
| NEXT_STOP | USINT | — |
| START_HOURS | LREAL | h |
| STOP_HOURS | LREAL | h |
| SPREAD_H | REAL | h |
| VALID | BOOL | — |
| ALM_NONE_AVAIL | BOOL | — |
| ALM_HOURS_FAULT | BOOL | — |
| ALM_SPREAD | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
Validation evidence
- Tests
- 10
- Simulated scans
- 73
- 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 GEN_PRIORITY_ROTATE — free
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