SPLIT_RANGE
Split-range output driving two actuators from one controller, in either the opposing or the sequenced arrangement, with a crossover deadband.
When to use it
Use SPLIT_RANGE when one loop has two actuators — heating and cooling coils on an air handler, heating and chilled water on a zone valve pair, a small and a large control valve staged across one range, charge and discharge on a battery inverter.
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 |
|---|---|---|
| IN | REAL | % |
| SPLIT_PCT | REAL | % |
| DEADBAND_PCT | REAL | % |
| SEQUENCED | BOOL | — |
| ENABLE | BOOL | — |
| FAIL_A_PCT | REAL | % |
| FAIL_B_PCT | REAL | % |
Outputs
| Port | Type | Unit |
|---|---|---|
| OUT_A | REAL | % |
| OUT_B | REAL | % |
| A_ACTIVE | BOOL | — |
| B_ACTIVE | BOOL | — |
| IN_DEADBAND | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 56
- 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 SPLIT_RANGE — 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.