HOT_LOOP_TEMP_MON
Multi-point hot-loop temperature aggregate with cold-point identification, per-channel rejection and a time-below-minimum record.
When to use it
Use HOT_LOOP_TEMP_MON when a self-sanitising water loop is instrumented at several points — supply, mid-loop, sub-loop returns, main return — and the sanitising claim rests on the COLDEST of them staying above the minimum rather than on the supply temperature.
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 |
|---|---|---|
| PARAMS | STRING | — |
| T1 | REAL | degC |
| T2 | REAL | degC |
| T3 | REAL | degC |
| T4 | REAL | degC |
| T5 | REAL | degC |
| T6 | REAL | degC |
| OK1 | BOOL | — |
| OK2 | BOOL | — |
| OK3 | BOOL | — |
| OK4 | BOOL | — |
| OK5 | BOOL | — |
| OK6 | BOOL | — |
| N_POINTS | USINT | — |
| MIN_C | REAL | degC |
| RANGE_LO | REAL | degC |
| RANGE_HI | REAL | degC |
| CONFIRM | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| T_MIN | REAL | degC |
| ALL_OK | BOOL | — |
| T_MAX | REAL | degC |
| COLD_POINT | USINT | — |
| N_GOOD | USINT | — |
| VALID | BOOL | — |
| TIME_BELOW_S | REAL | s |
| ALM_LOW | BOOL | — |
| ALM_SENSOR_LOSS | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 8
- Simulated scans
- 308
- 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 HOT_LOOP_TEMP_MON — 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.