DCW_TANK_LEVEL_CTRL
Storage / break-tank fill control with source interlock and downstream dry-run protection.
When to use it
Use DCW_TANK_LEVEL_CTRL when a break tank, treated-water tank, or reclaim tank is filled from an upstream source on level, and the pumps taking suction from that tank must be inhibited before it runs dry.
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 | — |
| LEVEL_PCT | REAL | % |
| LVL_OK | BOOL | — |
| SRC_AVAIL | BOOL | — |
| FILL_ON_PCT | REAL | % |
| FILL_OFF_PCT | REAL | % |
| LO_LO_PCT | REAL | % |
| RESTART_BAND_PCT | REAL | % |
| HI_HI_PCT | REAL | % |
| FILL_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type |
|---|---|
| FILL_CMD | BOOL |
| DRY_RUN_INHIBIT | BOOL |
| LEVEL_LOW | BOOL |
| ALM_OVERFLOW | BOOL |
| ALM_NO_SOURCE | BOOL |
| ALM_FILL_TMO | BOOL |
| ALM_LVL_FAULT | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
DCW_TANK_LEVEL_CTRL commands a real actuator. It is written to sit underneath your own interlock, permissive and protection logic — not to replace it. Commission it as you would any control block you wrote yourself.
Validation evidence
- Tests
- 6
- Simulated scans
- 57
- 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 DCW_TANK_LEVEL_CTRL — free
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