MATERIAL_DISPENSE_VER
Gravimetric material dispense with barcode verification, two-speed feed, in-flight compensation and in-tolerance verification.
When to use it
Use MATERIAL_DISPENSE_VER when a raw material is charged by weight into a vessel from a feeder or a valve, the container presented must be barcode-verified against the recipe before anything is dispensed, and the delivered charge has to be proven inside a percentage tolerance.
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 |
|---|---|---|
| MATERIAL_ID | STRING | — |
| TARGET_KG | REAL | kg |
| TOL_PCT | REAL | % |
| SCAN_OK | BOOL | — |
| ENABLE | BOOL | — |
| REQ | BOOL | — |
| WEIGHT_KG | REAL | kg |
| WGT_OK | BOOL | — |
| DRIBBLE_PCT | REAL | % |
| INFLIGHT_KG | REAL | kg |
| SETTLE_T | TIME | — |
| FILL_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| ACTUAL_KG | REAL | kg |
| VERIFIED | BOOL | — |
| FAST_CMD | BOOL | — |
| SLOW_CMD | BOOL | — |
| DISPENSING | BOOL | — |
| DONE | BOOL | — |
| DEV_PCT | REAL | % |
| IN_TOL | BOOL | — |
| TOTAL_KG | REAL | kg |
| DISPENSE_CNT | UINT | — |
| VALID | BOOL | — |
| FAIL | BOOL | — |
| ALM_CHARGE_VOID | BOOL | — |
| ALM_NO_SCAN | BOOL | — |
| ALM_OVER_TOL | BOOL | — |
| ALM_UNDER_TOL | BOOL | — |
| ALM_SCALE_FAULT | BOOL | — |
| ALM_FILL_TMO | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
MATERIAL_DISPENSE_VER 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
- 12
- Simulated scans
- 135
- 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 MATERIAL_DISPENSE_VER — 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.