F0_LETHALITY_CALC
F0 accumulated sterilisation lethality — the equivalent-minutes integral, computed from measured temperature at the block's own elapsed time.
When to use it
Use F0_LETHALITY_CALC when a moist-heat sterilisation cycle — autoclave, SIP, terminal sterilisation — is released on accumulated lethality rather than on a dwell timer, and the controller has to carry the integral itself.
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 |
|---|---|---|
| TEMP | REAL | degC |
| TEMP_OK | BOOL | — |
| Z_VALUE | REAL | degC |
| T_REF | REAL | degC |
| CYCLE | TIME | — |
| T_GATE | REAL | degC |
| F0_TARGET | REAL | min |
| RUN | BOOL | — |
| RESET | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| F0 | LREAL | min |
| ACCUM | LREAL | min |
| L_RATE | REAL | min/min |
| F0_REACHED | BOOL | — |
| CYCLE_COMPLETE | BOOL | — |
| CYCLE_ELAPSED_S | REAL | s |
| VALID | BOOL | — |
| ALM_TEMP_FAULT | BOOL | — |
| ALM_RECORD_GAP | BOOL | — |
| RECORD_GAP_S | REAL | s |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 756
- 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 F0_LETHALITY_CALC — free
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