INDEXING_CONVEYOR
Indexing / walking-beam station transport with proven arrival, homed position tracking and index-timeout supervision.
When to use it
Use INDEXING_CONVEYOR when a walking-beam, pallet or lug conveyor moves parts one station at a time and the work heads at each station may only fire when the transport has proven it is stopped at a known station.
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 |
| INDEX_REQ | BOOL |
| IN_POS | BOOL |
| POS_OK | BOOL |
| JAM | BOOL |
| HOME_REQ | BOOL |
| STATIONS | USINT |
| INDEX_T | TIME |
| MIN_INDEX_T | TIME |
| SETTLE_T | TIME |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| POSITION | USINT |
| AT_STATION | BOOL |
| POS_VALID | BOOL |
| INDEX_CMD | BOOL |
| BUSY | BOOL |
| INDEXES | UDINT |
| ALM_INDEX_TMO | BOOL |
| ALM_NOT_HOMED | BOOL |
| ALM_JAM | BOOL |
| ALM_POS_FAULT | BOOL |
| ALM_CFG_ERR | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
INDEXING_CONVEYOR 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
- 7
- Simulated scans
- 84
- 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 INDEXING_CONVEYOR — 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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