TEMP_HUM_GRID
Hall temperature/humidity sensor-grid aggregation with per-channel rejection, stratification spread and lost-sensor latch.
When to use it
Use TEMP_HUM_GRID when a data hall or containment aisle is instrumented with several rack-inlet temperature sensors (and a smaller number of humidity sensors), and the cooling loop, the ASHRAE check and the DCIM trend all need one min/average/max per hall rather than eight separate points.
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 | — |
| T1 | REAL | °C |
| T2 | REAL | °C |
| T3 | REAL | °C |
| T4 | REAL | °C |
| T5 | REAL | °C |
| T6 | REAL | °C |
| T7 | REAL | °C |
| T8 | REAL | °C |
| T1_OK | BOOL | — |
| T2_OK | BOOL | — |
| T3_OK | BOOL | — |
| T4_OK | BOOL | — |
| T5_OK | BOOL | — |
| T6_OK | BOOL | — |
| T7_OK | BOOL | — |
| T8_OK | BOOL | — |
| RH1 | REAL | % |
| RH2 | REAL | % |
| RH3 | REAL | % |
| RH4 | REAL | % |
| RH1_OK | BOOL | — |
| RH2_OK | BOOL | — |
| RH3_OK | BOOL | — |
| RH4_OK | BOOL | — |
| T_RANGE_LO_C | REAL | °C |
| T_RANGE_HI_C | REAL | °C |
| SPREAD_MAX_K | REAL | K |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| T_MIN | REAL | °C |
| T_AVG | REAL | °C |
| T_MAX | REAL | °C |
| RH_AVG | REAL | % |
| T_SPREAD_C | REAL | K |
| T_MAX_CH | USINT | — |
| T_MIN_CH | USINT | — |
| N_T_OK | USINT | — |
| N_RH_OK | USINT | — |
| T_VALID | BOOL | — |
| RH_VALID | BOOL | — |
| ALM_NO_T_SENSOR | BOOL | — |
| ALM_SPREAD | BOOL | — |
| ALM_SENSOR_LOST | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 8
- Simulated scans
- 43
- 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 TEMP_HUM_GRID — 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.