LEAK_TEST_PRESSURE
Pressure-decay leak test: charge, stabilise, isolate and measure the decay against a limit, with a held per-part verdict and a consecutive-reject stop.
When to use it
Use LEAK_TEST_PRESSURE when an assembled part, closure or pack is proven leak-tight by pressure or vacuum decay in a fixture, and every part has to leave the station with a verdict the diverter can act on.
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 | — |
| START | BOOL | — |
| PRESSURE | REAL | kPa |
| P_OK | BOOL | — |
| PART_PRESENT | BOOL | — |
| TEST_P | REAL | kPa |
| P_TOL | REAL | kPa |
| FILL_TOL | REAL | kPa |
| DECAY_LIM | REAL | kPa |
| MIN_DECAY | REAL | kPa |
| FILL_TMO | TIME | — |
| STAB_T | TIME | — |
| T | TIME | — |
| VENT_T | TIME | — |
| REJ_RUN_MAX | USINT | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| DECAY | REAL | kPa |
| SEALED | BOOL | — |
| REJECT | BOOL | — |
| RESULT_VALID | BOOL | — |
| VERDICT | USINT | — |
| LEAK_RATE | REAL | kPa/s |
| FILL_CMD | BOOL | — |
| ISOLATE_CMD | BOOL | — |
| VENT_CMD | BOOL | — |
| BUSY | BOOL | — |
| COUNT_PASS | UDINT | — |
| COUNT_FAIL | UDINT | — |
| REJ_RUN | USINT | — |
| ALM_REJ_RUN | BOOL | — |
| ALM_FILL_TMO | BOOL | — |
| ALM_P_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
LEAK_TEST_PRESSURE 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
- 13
- Simulated scans
- 207
- 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 LEAK_TEST_PRESSURE — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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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.