SUPPLY_TEMP_AVG
Six-channel supply-air aggregation with per-channel range rejection, minimum/average/maximum, stratification spread and ASHRAE envelope alarms.
When to use it
Use SUPPLY_TEMP_AVG when several supply-air or rack-inlet sensors cover one zone and the supervisory loop needs a single trustworthy minimum, average and maximum from them without a dead channel corrupting the result.
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 |
|---|---|---|
| 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_SENSORS | USINT | — |
| MIN_SENSORS | USINT | — |
| RANGE_LO | REAL | degC |
| RANGE_HI | REAL | degC |
| HI_LIMIT | REAL | degC |
| HI_HI_LIMIT | REAL | degC |
| CONFIRM | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| T_MIN | REAL | degC |
| T_AVG | REAL | degC |
| T_MAX | REAL | degC |
| SPREAD | REAL | K |
| N_GOOD | USINT | — |
| VALID | BOOL | — |
| ALM_SENSOR_LOSS | BOOL | — |
| ALM_HIGH | BOOL | — |
| ALM_HIGH_HIGH | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
Validation evidence
- Tests
- 7
- Simulated scans
- 77
- 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 SUPPLY_TEMP_AVG — 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.