METAL_DETECT_CCP
Metal-detector critical control point with proven reject confirmation and routine test-piece prompting.
When to use it
Use METAL_DETECT_CCP when a metal detector is a critical control point on a food line: every detection must be ejected, every ejection must be proven, and the detector's routine test-piece checks must be enforced rather than merely reminded about.
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 | — |
| SIGNAL | REAL | % |
| SENSITIVITY | REAL | % |
| HEAD_OK | BOOL | — |
| CONFIRM_SW | BOOL | — |
| BIN_FULL | BOOL | — |
| CONF_TMO | TIME | — |
| STUCK_TMO | TIME | — |
| TEST_DUE | BOOL | — |
| TEST_PASS | BOOL | — |
| TEST_INTERVAL_MIN | REAL | min |
| TEST_GRACE | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| DETECT | BOOL | — |
| REJECT_CONF | BOOL | — |
| REJECT_CMD | BOOL | — |
| LINE_PERMIT | BOOL | — |
| CCP_OK | BOOL | — |
| TEST_AGE_MIN | REAL | min |
| DETECTS | UDINT | — |
| REJECTS_CONF | UDINT | — |
| MISSED | UDINT | — |
| TESTS_PASSED | UDINT | — |
| ALM_NO_CONFIRM | BOOL | — |
| ALM_SW_FAULT | BOOL | — |
| ALM_BIN_FULL | BOOL | — |
| ALM_HEAD_FAULT | BOOL | — |
| ALM_TEST_DUE | BOOL | — |
| ALM_TEST_OVERDUE | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
METAL_DETECT_CCP 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
- 11
- Simulated scans
- 1446
- 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 METAL_DETECT_CCP — 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.