ORDER_RELEASE
Wave / order release throttled by downstream headroom, with open-close hysteresis, batch limiting and a wave-switch guard.
When to use it
Use ORDER_RELEASE when orders are released to the floor in waves and the release rate has to be held to what the sorter, the cranes or the pick faces can actually absorb, rather than dumping the wave and letting the backlog sort itself out.
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 |
| REQ | BOOL |
| WAVE_ID | UINT |
| CAPACITY | UINT |
| BACKLOG | UINT |
| PRIORITY | USINT |
| READY_QTY | UINT |
| MIN_PRIORITY | USINT |
| OPEN_HEADROOM | USINT |
| CLOSE_HEADROOM | USINT |
| MAX_BATCH | USINT |
| HOST_OK | BOOL |
| STALL_TMO | TIME |
| CLOSE | BOOL |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| RELEASE_QTY | UINT |
| WAVE_OPEN | BOOL |
| HEADROOM | UINT |
| PENDING_REL | UINT |
| RELEASE_VALID | BOOL |
| ACTIVE_WAVE | UINT |
| RELEASED_TOTAL | UDINT |
| WAVE_DONE | BOOL |
| HOLDING | BOOL |
| ALM_OVERLOAD | BOOL |
| ALM_STALL | BOOL |
| ALM_WAVE_SWITCH | BOOL |
| ALM_CFG_ERR | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
ORDER_RELEASE 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
- 88
- 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 ORDER_RELEASE — free
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.