DATE_LOT_VERIFY
Date and lot code print-and-verify against the expected code, with a blank-code check and a verifier watchdog.
When to use it
Use DATE_LOT_VERIFY when a coder prints a date and lot code on every pack and a vision or OCR reader reads it back, and product may not be released unless the printed code has been proved to match the code the batch record says it should carry.
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 |
|---|---|
| ENABLE | BOOL |
| READ_DONE | BOOL |
| EXPECTED | STRING |
| READ | STRING |
| CAM_OK | BOOL |
| LINE_RUN | BOOL |
| FAIL_LIM | USINT |
| READ_TMO | TIME |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| MATCH | BOOL |
| REJECT | BOOL |
| LINE_PERMIT | BOOL |
| VALID | BOOL |
| VERIFIED | UDINT |
| FAILED | UDINT |
| CONSEC_FAILS | USINT |
| ALM_NO_CODE | BOOL |
| ALM_CODE_FAIL | BOOL |
| ALM_VERIFY_LOST | BOOL |
| ALM_CAM_FAULT | BOOL |
| ALM_CFG_ERR | BOOL |
Validation evidence
- Tests
- 8
- Simulated scans
- 73
- 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
Download DATE_LOT_VERIFY — 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 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.